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Journal articles on the topic 'Dental Restoration'
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1
Harun, Nor Asilah, Munirah Yaacob, Mohamad Shafiq Aizuddin Abdul `Alim, Saifullah Ghazali, and Nik Khairul Azmi Nik Khairuzaman. "Restoration in primary molars placed by undergraduate dental students: reasons for failures." IIUM Journal of Orofacial and Health Sciences 2, no. 2 (July 31, 2021): 33–40. http://dx.doi.org/10.31436/ijohs.v2i2.93.
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Dental caries is one of the most common chronic childhood diseases and highly prevalent in the world. The commonest treatment procedure for dental caries is a dental restoration which aims to retain the tooth. The survival of restoration depends on the factors associated with restorative materials, patients or operators. Thus, this study aimed to determine the reasons for the failure of restoration in posterior primary teeth performed by undergraduate dental students. A total number of 32 patients aged from 5 to 12 years old were included in this study. Overall, 115 primary molar restorations were assessed clinically using the modified United States Public Health Service Ryge criteria. The O’Leary plaque score was used to evaluate the oral hygiene status of all patients. Then, the data was analysed using the Kaplan-Meier survival curves with log-rank test and Cox regression analysis. 43 (37.4 %) restorations failed with 62.1 % for glass ionomer cement and 36.4 % for composite restorations. Marginal adaptation (62.8 %) is the commonest cause of failure. 76.7% of failure restoration was in patients with poor oral hygiene, and it showed a significant difference compared to patients with moderate and good oral hygiene (p = 0.014). Thus, it was concluded that the type of restorative material and oral hygiene status contributed to the failure of restoration placed in primary molar restorations with failure restoration may occur 2.6 times more in poor oral hygiene patients.
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Mitronin, A., D. Ostanina, A. Ruzina, and O. Khvorostenko. "Aesthetic rehabilitation of posterior teeth with direct composite restorations (a case report)." Endodontics Today 19, no. 3 (October 16, 2021): 188–89. http://dx.doi.org/10.36377/1683-2981-2021-19-3-188-189.
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Aesthetic composite restoration is the most common method for dental hard tissue defects reconstruction. Despite the active development and use of ceramic restorations for dental rehabilitation, the introduction of new nanotechnological filling materials has opened up fundamentally new possibilities in restorative dentistry. This article represents a clinical case of direct composite restoration in teeth 25, 26 and 27 using new nanoceramic materials.
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Abdul Muttalib Khairiyah, Ishak Abdul Razak, Raja Jalludin Raja-Latifah, Bee Siew Tan, Abu Talib Norain, Ismail Noor-Aliyah, Che Salleh Natifah, and Ismail Rauzi. "Costing Dental Restorations in Public Sector Dental Clinics." Asia Pacific Journal of Public Health 21, no. 2 (February 3, 2009): 184–95. http://dx.doi.org/10.1177/1010539509331788.
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The objective of this study is to share cost analysis methodology and to obtain cost estimates for posterior restorations in public sector dental clinics. Two urban and 2 rural dental clinics in Selangor state were selected. Only cases of 1 posterior restoration per visit by dental officers were included over 6 months. One capsulated amalgam type, 1 capsulated tooth-colored, and 1 non-capsulated tooth-colored material were selected. A clinical pathway form was formulated to collect data per patient. Annual capital and recurrent expenditures were collected per clinic. The mean cost of an amalgam restoration was RM 30.96 (sdRM 7.86); and tooth-colored restorations ranged from RM 33.00 (sdRM 8.43) to RM 41.10 (sdRM 10.61). Wherein 1 USD = RM 2.8. Restoration costs were 35% to 55% higher in clinics in rural areas than in urban areas. The findings demonstrate economy of scale for clinic operation and restoration costs with higher patient load. Costs per restoration were higher in rural than in urban dental clinics. More studies are recommended to address the dearth of dental costs data in Malaysia.
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Mikheeva, A. A., and G. V. Bol’shakov. "Bond strength of restoration materials used for dental ceramics repair." Kazan medical journal 95, no. 1 (February 15, 2014): 22–25. http://dx.doi.org/10.17816/kmj1449.
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Aim. To assess the bond strength of composite material to ceramic surface of metal-ceramic-fixed dental prosthesis depending on the type of restoration systems used for chipped porcelain restorations. Methods. Bond strength of restoration material to porcelain coating surface were studied according to ISO 10477 issued at 01.10.2004. The surface of the ceramic-metal plates was polished by different methods depending on the restoration system used. Restorative material was applied using a template. Prepared samples were placed in a testing machine and loaded at a constant crosshead speed of 1±0.3 mm/min before separation, the load F at break was registered by an automatic recorder. Results. Similar bond strength results were revealed for restoration systems not requiring acid pickling of porcelain surface («Cimara», «Ceramic Repair») and restoration system including 9.5% hydrofluoric acid «Porcelain etch silane»: 17.993, 17.774 and 17.896 MPa respectively. Bond strength was much higher (25.278 MPa) if restoration system with 4% hydrofluoric acid was used. «Vertise™ Flow» restorative single-component material also provided significant bond strength - 24.315 MPa. Conclusion. The study showed the possibility of using a single-component restorative material to repair chipped porcelain tile coating metal-ceramic-fixed dental prostheses. For longer life of chipped porcelain tile coating restoration of dental prostheses, the use of restoration systems including 4% hydrofluoric acid is recommended.
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Caplan, D. J., Y. Li, W. Wang, S. Kang, L. Marchini, H. J. Cowen, and J. Yan. "Dental Restoration Longevity among Geriatric and Special Needs Patients." JDR Clinical & Translational Research 4, no. 1 (September 5, 2018): 41–48. http://dx.doi.org/10.1177/2380084418799083.
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Introduction: Although the population is aging and retaining more teeth, there is a lack of studies that address the longevity of dental restorations placed among older adults. Objectives: This study aimed to describe the survival trajectory of dental restorations placed in an outpatient population of geriatric and adult special needs patients over a 15-y span, with particular interest in the longevity of subsequent restorations in teeth that received multiple restorations over time. Methods: Dental restorations of different types and sizes in patients aged ≥65 y treated between 2000 and 2014 at the University of Iowa College of Dentistry were followed until they incurred an event (i.e., restoration replacement, extraction of the tooth, or endodontic treatment of the tooth). Survival analysis and extended Cox regression models were used to generate hazard ratios for selected predictor variables. Results and Conclusion: A total of 9,184 restorations were followed among 1,551 unique patients. During the follow-up period, 28.7% of these restorations incurred an event, and overall the restorations had a median life span of 6.2 y. In multivariable regression models, after controlling for sex and age, a greater number of restoration surfaces were associated with higher risks of failure, and the initial restoration recorded in the database for each participant tended to have a lower risk of failure than that of restorations that included any of those same surfaces that were placed later. This information could be helpful to older adult patients considering various restorative treatment options during the dental treatment–planning and informed consent process. Knowledge Transfer Statement: Informed decision making with regard to potential treatment options is an important component of health and well-being. The present study could contribute to the improved health of older adult dental patients by providing baseline information that clinicians can use as they discuss different restorative treatment options with these patients and their caregivers during the informed consent process.
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Liu, Mengdong, Haiping Xu, and Yina Wang. "Use of Nanocomposite Resin Materials for Dental Restoration in Elderly Patients." Tobacco Regulatory Science 7, no. 5 (September 30, 2021): 3916–26. http://dx.doi.org/10.18001/trs.7.5.1.164.
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Tooth defects can affect not only periodontal tissue but also the whole body if not restored in good time. Composite resin materials are commonly used filling materials in dental restorations, but they have low material strength and are likely to cause insufficient secondary caries. Improving the ability of composite resin materials to restore defective teeth has thus become the focus of research interest. Nanocomposite materials are widely used in dentistry because of their good design characteristics, wide indications, strong restorative power, and high economic efficiency. However, whether they cause respiratory tract inflammation or tissue damage due to their large specific surface area still needs further investigation. This study compared the effects of nanocomposite resin materials with those of traditional light-curable composite resin materials on the restoration of dental defects in elderly patients and found that nanomaterials could not only reduce the incidence of tooth sensitivity and tooth pain after restoration but also improve the aesthetic outcomes of the tooth. In addition to the restoration effect, the occurrence of adverse reactions in patients who underwent dental restoration using nanomaterials within 2 years after the procedure was significantly lower than that in patients who underwent dental restoration using traditional materials. These results indicate that the nanocomposite resin material improved the restoration effect in elderly patients without increasing their risk for adverse reactions. Therefore, nanocomposite resin materials should be used as the preferred filling material for dental restoration in elderly patients with dental defects.
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Heboyan, Artak, Anna Vardanyan, Mohmed Isaqali Karobari, Anand Marya, Tatevik Avagyan, Hamid Tebyaniyan, Mohammed Mustafa, Dinesh Rokaya, and Anna Avetisyan. "Dental Luting Cements: An Updated Comprehensive Review." Molecules 28, no. 4 (February 8, 2023): 1619. http://dx.doi.org/10.3390/molecules28041619.
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The cementation of indirect restoration is one of the most important steps in prosthetic and restorative dentistry. Cementation aims to bond the prosthetic restoration to the prepared enamel or enamel and dentine. Successful cementation protocols prevent biofilm formation at the margin between tooth and restoration and minimize mechanical and biological complications. With the advancements in dental cements, they have been modified to be versatile in terms of handling, curing, and bond strengths. This review presents updates on dental cements, focusing on the composition, properties, advantages, limitations, and indications of the various cements available. Currently, dental restorations are made from various biomaterials, and depending on each clinical case, an appropriate luting material will be selected. There is no luting material that can be universally used. Therefore, it is important to distinguish the physical, mechanical, and biological properties of luting materials in order to identify the best options for each case. Nowadays, the most commonly used dental cements are glass-ionomer and resin cement. The type, shade, thickness of resin cement and the shade of the ceramic, all together, have a tangible influence on the final restoration color. Surface treatments of the restoration increase the microtensile bond strength. Hence, the proper surface treatment protocol of both the substrate and restoration surfaces is needed before cementation. Additionally, the manufacturer’s instructions for the thin cement-layer thickness are important for the long-term success of the restoration.
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Mala, Kundabala, Manuel Thomas, and Neeta Shetty. "Refurbishment, repair, or replacement of dental restorations - perpetual dilemma." Journal of Dental Health, Oral Disorders & Therapy 9, no. 6 (2018): 531–33. http://dx.doi.org/10.15406/jdhodt.2018.09.00443.
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Most of the general dentistry work includes replacement of old restorations or repair of some of the restorations to extend their longevity and serviceability. While some consider replacement is the best solution for deteriorated restorations, some other choose repair as a treatment option depending on the cases. Even though repairs may be frequently occurring in daily practice, there are not many randomized control studies to advice about the repair of restorations. Practice based research, should focus on the criteria when a restoration is best repaired or replaced. Both options have their advantages and disadvantages. Proper Diagnosis and treatment planning are the key factors. Assessing the caries risk level, type of restoration to be replaced, restorative materials to be chosen, aesthetic & functional considerations involved are very important for the longevity of the repair work. Teachers of conservative dentistry should continue to develop and refine the teaching of the repair of amalgam, direct or indirect composite resin restorations and ceramic restorations. This should in turn strengthen the evidence base for the application of repair techniques in clinical practice.
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Yuvashree C S and Delphine Priscilla Antony S. "Association of age and gender of patients who underwent amalgam restoration in mandibular premolars with class 1 dental caries." International Journal of Research in Pharmaceutical Sciences 11, SPL3 (October 6, 2020): 987–91. http://dx.doi.org/10.26452/ijrps.v11ispl3.3317.
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The presence of dental caries is the main reason for the placement and replacement of restorations. Maintaining restorations to a satisfactory clinical condition is a big challenge for the practitioners. The aim of the study is to associate the age and gender of the patients who underwent amalgam restorations in mandibular premolars with class 1 dental caries. This was a descriptive study, where all the patients data were collected by reviewing patients records and analysing the data of 86000 patients reported from June 2019 to March 2020 to the Department of conservative dentistry and endodontics, Private Dental college and hospitals, Chennai. Data was collected and tabulated, statistical analysis was done by SPSS – IBM. In this study, we observed that there is a significant difference between the age, gender and tooth number of patients who underwent amalgam restoration in mandibular premolar with class 1 dental caries. Amalgam restoration has served the profession well, and it is very useful in restorative dentistry. Thus the use of amalgam can be continued as a material of choice if esthetics is not a concern.
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Chalas, Renata, Miroslaw Orlowski, Bozena Tarczydlo, Joanna Zubrzycka-Wrobel, Karol Maj, and Ilona Wojcik-Checinska. "Evaluation of the surface structure of composite restorations in light of own pilot research." Current Issues in Pharmacy and Medical Sciences 29, no. 3 (September 1, 2016): 111–13. http://dx.doi.org/10.1515/cipms-2016-0022.
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Abstract Research on the dental restorative materials employed in remedying dental cavities has been conducted on many levels and areas, both with application of clinical and laboratory methods. One of the elements that determines whether the restoration may be degraded is the condition of its surface. The aim of the study was to assess the texture surface of composite restorations using a non-contact method of teeth models scanning. In this work, ten medium size cavities on the occlusal surfaces of molars in adult patients were prepared and restored with resin composite. Before undertaking the procedure and after the finishing and polishing of the restorations, impressions were taken and sent into the laboratory so as to prepare plaster casts. Every cast was then scanned utilizing the non-contact 3D surface measurement instrument so as to assess the texture surface of the restoration. The resulting three dimensional analyses of post-restoration models showed the correct marginal adaptation of resin composite dental material to the hard tooth structures and its smooth filling occlusal surface. Additional comparison of scans done before and after restoring the cavities allowed the calculating of differences in volume, mean and maximum heights. The applied method of analysis is thought to be helpful in the detailed evaluation of restoration dental material texture. Moreover, the enabled possibility of continuous observation is expedient for assessing the usefulness of the method in standard dental practice.
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Mackenzie, Louis. "Dental amalgam: a practical guide." Dental Update 48, no. 8 (September 2, 2021): 607–18. http://dx.doi.org/10.12968/denu.2021.48.8.607.
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Historically, dental amalgam is the world's most commonly used restorative material. Its use is declining due to patient and professional demand for tooth-coloured restorations that are adhesive and promote minimally invasive tooth preparation techniques. Significant reduction has also resulted from environmental concerns relating to dental amalgam's ~50% mercury content. This paper provides a comprehensive review of the status of dental amalgam including its advantages and disadvantages, amalgam safety, regulations and legislation and a comparison with alternative restorative materials. As the undergraduate teaching of amalgam procedures has progressively declined, this paper also provides an illustrated step-by-step revision guide to the materials, equipment and clinical techniques that will optimize the restoration of challenging, complex cavities, where amalgam is still considered by many to be the material of choice. CPD/Clinical Relevance: Amalgam remains an excellent restorative material for long-lasting restorations in large/complex cavities and where moisture control presents challenges.
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Giudici, Matthew, Andrew Flett, and Andrew Legg. "Multidisciplinary management of an enamel–dentine crown fracture with insufficient inter-occlusal restorative space: A case report." Dental Update 49, no. 9 (October 2, 2022): 743–47. http://dx.doi.org/10.12968/denu.2022.49.9.743.
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Dental trauma occurs commonly in young patients, can be complex to treat and can have negative psychological and social impacts on patients' lives. This case report outlines a multidisciplinary team approach to restoration of a traumatized anterior tooth with delayed presentation, insufficient inter-occlusal space for restoration and history of multiple failed restorations. This case report demonstrates orthodontic and restorative techniques for the management of insufficient inter-occlusal space and the indirect restoration of a traumatized anterior tooth. CPD/Clinical Relevance: A multidisciplinary team approach can be used to reorganize a patients' occlusion to provide the inter-occlusal space required to provide restorations.
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Gheorghiu, Irina-Maria, Paula Perlea, Loredana Mitran, A. A. Iliescu, Sanziana Scarlatescu, Ioana Suciu, and M. Mitran. "Dental lesions and restorative treatment in molars." ARS Medica Tomitana 23, no. 3 (August 28, 2017): 137–41. http://dx.doi.org/10.1515/arsm-2017-0024.
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AbstractThis article review specific clinical issues of the molar teeth, as well as the therapeutic approach of their pathology. The dental pathology we face in the group of molars is related to: dental caries, dental trauma (crown and crown-root fractures), dental wear phenomena. The therapeutic approach of the molar teeth is represented by: restoration of the loss of hard dental tissues; endodontic treatments of pulpal and periapical complications; surgical treatment. The restorative treatments in molars are: direct restorations, with or without supplementary anchorage for obturations; inlay, onlay; prosthetic crown.
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Blum, Igor R. "The Assessment and Minimally Invasive Management of Existing Restorations." Dental Update 47, no. 10 (November 2, 2020): 823–28. http://dx.doi.org/10.12968/denu.2020.47.10.823.
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This article provides an overview of current knowledge and understanding of existing criteria for the assessment of dental restorations and encourages dental practitioners to shift, if not already doing so, to considering minimally invasive interventions for manging deteriorating restorations. The repair of restorations in such a way extends longevity of the restoration without sacrificing intact, healthy tooth tissue, and is in the best interest of patients in terms of biological and economic costs. The replacement of a restoration should be only considered as a last resort, when there are no other viable alternatives. CPD/Clinical Relevance: Standardised assessment of dental restorations, using established criteria for clinical judgement and decision-making, is particularly important when managing deteriorating restorations in clinical practice. Minimally invasive management of such restorations, in terms of restoration repair strategies, should be viewed as a safe, viable and effective alternative to other more invasive treatments. The reader should understand the clinical evaluation of dental restorations based on reported standardised parameters and appreciate the benefits of minimally invasive management of deteriorating, yet serviceable, dental restorations in clinical practice.
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Edlich, Richard F., Amy A. Cochran, Catherine L. Cross, Courtney A. Wack, William B. Long, and Anthony T. Newkirk. "Legislation and Informed Consent Brochures for Dental Patients Receiving Amalgam Restorations." International Journal of Toxicology 27, no. 4 (July 2008): 313–16. http://dx.doi.org/10.1080/10915810802366851.
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In 2008, Norway banned the use of mercury for amalgam restorations. Four states in the United States have developed Informed Consent Brochures for amalgam restorations that must be given to their dental patients. The authors describe a patient who had a large cavity in his left lower molar tooth no. 18 that had to be removed by an oral surgeon. When the patient went to the oral surgeon, the surgeon told the patient that he would replace the carious tooth with a gold implant. He was not given an Informed Consent Brochure regarding dental restorative materials. The oral surgeon extracted the carious tooth, replacing the tooth with a supposed gold crown implant. On his yearly dental examination, his dentist took an x-ray of his dental implant and explained that the x-ray could not distinguish whether the implant contained either gold or mercury. Consequently, the dentist referred him to a dental clinic in which the dental implant could be removed without mercury contamination of the patient’s neurologic system during the extraction of the implant from the root canal. During the removal of the dental restoration, the dentist found build up expanding into the root canal that had a black color. The crown and underlying tooth were sent to ALT BioScience for analysis. Elemental analysis of the crown and underlying tooth confirmed the presence of mercury in the restoration. The patient should have been given an Informed Consent Brochure by the dentist that described the dental restoration that was used in the dental implant.
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Wilson, Nairn HF, and Christopher D. Lynch. "Prevention and Management of Scale and Polish Damage to Resin Composite Restorations." Primary Dental Journal 3, no. 2 (June 2014): 70–71. http://dx.doi.org/10.1308/205016814812143932.
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Background The use of resin composite in the restoration of, in particular, posterior teeth is increasing. This trend is set to continue, with the momentum-gathering shift towards minimal-intervention direct approaches to the restoration of diseased, damaged and worn teeth, and subsequent to the signing of the Minamata Convention, aimed, amongst other measures, at ‘phasing down’ the use of dental amalgam.1–3 As a result, members of the dental team should, it is suggested, give consideration to the prevention and management of the damage that routine scaling and polishing may cause to the margins and surfaces of restorations of resin composite, or indeed restorations of other tooth-coloured restorative systems. Such damage may compromise the aesthetic qualities and reduce the life expectancy of tooth-coloured restorations. This article focuses on the prevention and management of scale and polish damage to resin composite restorations.
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Silva, Rafael Menezes, Letícia Pena Botelho, Adriana Maria Botelho, and Karine Taís Aguiar Tavano. "Biological restoration in permanent tooth: four-year follow-up." Brazilian Dental Science 21, no. 1 (March 28, 2018): 126. http://dx.doi.org/10.14295/bds.2018.v21i1.1454.
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<p>Biological restorations, involving a technique of uniting autogenous or homogenous dental fragment for use as the primary restorative material, are an alternative for morphological and functional re-establishment of teeth with extensive coronal destruction. Despite the wide range of restorative materials available in dentistry, no material has proved to be as efficient as the natural tooth structure. This article illustrates a therapeutic option for rehabilitating a devitalized mandibular tooth with a weakened coronal remainder by using the biological restoration technique. The authors present the sequence of planning and performing the technique, such as the characteristics of preparation of the tooth and fragment, impression taking, cutting and cementation of the fragment, and the four-year follow-up of the biological restoration, which shows the success of the technique with marginal adaptation and satisfactory esthetic appearance.</p><p> </p><p><strong>Keywords</strong></p><p>Adhesive; Devitalized tooth; Permanent dental restorations.</p>
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Tassery, Hervé, and Stephen Koubi. "Minimally Invasive Dentistry Using Sonic and Ultra-sonic Devices in Ultraconservative Class 2 Restorations." Journal of Contemporary Dental Practice 9, no. 2 (2008): 155–65. http://dx.doi.org/10.5005/jcdp-9-2-155.
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Abstract Aim Within the context of minimally invasive dentistry this article describes the sonic and ultrasonic cavity preparation techniques and assesses their advantages and disadvantages, clinical difficulties of their use, and offers a statement about these devices. Background Ultra-conservative Class 2 restorative techniques require the use of devices such as sonic and the new ultrasonic preparation systems. These systems, featuring a series of sonic and new ultra-sonic inserts, allow for the fabrication of preventive preparations on proximal surfaces without injuring the adjacent proximal surface or damaging the marginal ridge. Review An ultraconservative approach to the restoration of teeth with proximal caries that lack frank occlusal cavitation is facilitated by the use of slot-style cavity preparations created with sonic and ultrasonic instrumentation, and esthetic restorative materials. Summary New restorative procedures appear suitable for use in ultraconservative restorative dentistry. More frequent use of these procedures by dental practitioners could prevent the traditional breakdown of the marginal ridge when preparing a Class 2 dental restoration. When cautiously used, these two ultraconservative devices provide alternative operative procedures to treat carious lesions without frank occlusal cavitation and to promote another aspect of preventive dentistry. Clinical Significance New restorative procedures appear suitable for use in ultraconservative restorative dentistry. More frequent use of these procedures by dental practitioners could prevent the traditional breakdown of the marginal ridge when preparing a Class 2 dental restoration. Citation Koubi S, Tassery H. Minimally Invasive Dentistry Using Sonic and Ultra-sonic Devices in Ultraconservative Class 2 Restorations. J Contemp Dent Pract 2008 February;(9)2:155-165.
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Alreshaid, L., W. El-Badrawy, HP Lawrence, MJ Santos, and A. Prakki. "Composite versus Amalgam Restorations Placed in Canadian Dental Schools." Operative Dentistry 46, no. 6 (November 1, 2021): 621–30. http://dx.doi.org/10.2341/20-212-c.
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SUMMARY Objectives To investigate the latest teaching policies of posterior composite placement versus amalgam and to determine the actual numbers of posterior composites versus amalgam restorations placed in Canadian dental schools, over the years from 2008 to 2018. Methods Emails were sent to Chairs/Heads of Restorative Departments and Clinic Directors of all 10 Canadian dental schools to collect data in the forms of: 1) Questionnaire on current teaching policies of posterior composite and amalgam restorations; 2) data entry form to collect the actual numbers of posterior composite and amalgam restorations placed in their clinics. Results For the teaching questionnaire, the response rate was 90% (n=9). Seven (78%) of the responding schools reported that they assign 25%–50% of their preclinical restorative teaching time towards posterior composite placement. While, three (33%) of the responding schools allocated 50%–75% of their restorative teaching towards amalgam placement. Data entry response rate was 80% (n=8). Amalgam material was dominant in the restoration distribution from 2008 to 2012. While from 2013 to 2018, resin composite material was dominant in all eight responding schools. Linear regression analysis revealed a significant increasing trend in placing posterior composites in all the responding schools over time (p<0.05). Conclusions Data analysis revealed a clear trend towards an increase of posterior composite restoration placement and a decrease in the number of amalgam restorations placed. However, the teaching time assigned for posterior composite is not aligned with quantity placed. Review and adjustment of time allocated for teaching and training of each material are recommended.
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Haider, Ali, Omar Farooq Azam, Muhammad Talha, and Saleem Akhtar. "Characterization of NiCrMo Dental Restoration Alloy." Key Engineering Materials 875 (February 2021): 373–78. http://dx.doi.org/10.4028/www.scientific.net/kem.875.373.
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Restorative material is a class of dental materials used for direct filling and fabrication of indirect restoration. NiCr alloy is a restorative material frequently used for dental prostheses due to its properties and economic reasons. In present work beryllium free NiCrMo alloy was developed and studied for dental restoration application. The alloy have unique characteristics of resistance to oxidation and biocompatibility; the requisites for dental prostheses. NiCrMo alloy is found to possess mechanical strength and fabrication properties suitable for dental repairs. In this study the developed alloy was tested for its mechanical properties, biocompatibility and corrosion resistance. An in-vitro biocompatibility study was carried out. No signs of toxicity and no signs of cell growth inhibition, in presence of NiCrMo alloy specimen, were observed. Mechanical properties and corrosion resistance are found in the range that is suitable for dental prostheses and easy fabrication.
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Alauddin, Muhammad Syafiq, Norazlina Mohammad, Azlan Jaafar, Faizah Abdul Fatah, and Aimi Amalina Ahmad. "A Contemporary Evaluation on Posterior Direct Restoration Teaching among Undergraduates in Dental Schools in Malaysia." Dentistry Journal 9, no. 10 (October 19, 2021): 123. http://dx.doi.org/10.3390/dj9100123.
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There is a current trend to restore posterior teeth with composite resin due to increasing demands on natural tooth colour restoration and increased concern about the safety of amalgam restorations. The objective was to evaluate the current teaching of posterior direct restoration among restorative dental lecturers in Malaysia compared to available international literature. An online questionnaire, which sought information on the teaching of posterior restoration was developed and distributed to 13 dental schools in Malaysia. The response rate for the questionnaire was 53.8%. The most popular posterior restoration teaching methods among the respondents were lecture (95.7%), demonstration (87.0%) and problem-based learning (PBL) (73.9%), while continuous assessment and a practical competency test (82.6%) were the most popular assessment methods. Placing a hard setting calcium hydroxide and GIC base for deep cavity restored by composite restoration was taught in 79.2% of cases. The standard protocols for posterior composite restoration were incremental filling in deep cavity (87.5%), using circumferential metal bands with wooden wedge (91.7%), with a total etch system (95.8%), using a light emitting diode (LED) light curing unit (91.7%), finishing using water cooling (80%) and finishing with a disc (87.5%). Graduates from dental schools in Malaysia received similar theoretical, preclinical and clinical teaching on posterior restoration techniques, although there were variations in the delivery methods, techniques and assessments, pointing to a need for uniformity and consensus.
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Gheorghiu, Irina-Maria, Paula Perlea, Alexandru A. Iliescu, Sânziana Scărlătescu, and Anca-Nicoleta Temelcea. "Specific aspects of the dental restorative treatments in premolars." Romanian Journal of Stomatology 63, no. 2 (June 30, 2017): 88–93. http://dx.doi.org/10.37897/rjs.2017.2.7.
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This article reviews the therapeutic approaches of the premolars and highlights the special aspects of the dental restorative treatments in premolars. The direct restoration of the coronal hard tissues loss in premolars is conditioned by several aspects involved, such as: topographic localization on the dental arches, aesthetical requirements, the association of different coronal dental lesions. A characteristic aspect of the premolars direct resin composite restorations is the phenomenon of cuspal flexure; the causes, consequences, as well as the ways of its prevention are presented in the article.
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Aboras, Mohamed M., A. Muchtar, C. H. Azhari, and N. Yahaya. "Type of Failure of Zirconia-Based Ceramics in Dental Laboratory in Misurata, Libya." Applied Mechanics and Materials 575 (June 2014): 22–25. http://dx.doi.org/10.4028/www.scientific.net/amm.575.22.
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Zirconia (ZrO2) is used to fix restorations as a core material because of its mechanical properties, aesthetics, and compatibility. This study aims to analyze the failure types in ZrO2-based restoration fabricated in a dental laboratory in Misurata, Libya. Data were collected from laboratory records for a 30-day period with follow-up for five months. About 6% of the total restorations had defects with different percentages, 46% of which were fractures, 29% of which had weak bonding between ZrO2frameworks and veneers, 18% of which had cracks, and 7% of which had shade defects. Although ZrO2is a suitable material for dental restorations, defects may occur and lead to the failure of dental restorations. A thorough study is necessary to analyze the cause of failurein zirconia-based restorationsand to improve the properties to produce a versatile dental restorative material.
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Ciocan, Lucian Toma, Jana Ghitman, Vlad Gabriel Vasilescu, and Horia Iovu. "Mechanical Properties of Polymer-Based Blanks for Machined Dental Restorations." Materials 14, no. 23 (November 29, 2021): 7293. http://dx.doi.org/10.3390/ma14237293.
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The tremendous technological and dental material progress led to a progressive advancement of treatment technologies and materials in restorative dentistry and prosthodontics. In this approach, CAD/CAM restorations have proven to be valuable restorative dental materials in both provisional and definitive restoration, owing to multifarious design, improved and highly tunable mechanical, physical and morphological properties. Thus far, the dentistry market offers a wide range of CAD/CAM restorative dental materials with highly sophisticated design and proper characteristics for a particular clinical problem or multiple dentistry purposes. The main goal of this research study was to comparatively investigate the micro-mechanical properties of various CAD/CAM restorations, which are presented on the market and used in clinical dentistry. Among the investigated dental specimens, hybrid ceramic-based CAD/CAM presented the highest micro-mechanical properties, followed by CAD/CAM PMMA-graphene, while the lowest micro-mechanical features were registered for CAD/CAM multilayered PMMA.
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Aboras, Mohamed M., Kai Yuan Theng, Andanastuti Muchtar, Che Husna Azhari, and Norziha Yahaya. "A Review of the Low-Temperature Degradation of Dental Zirconia." Applied Mechanics and Materials 606 (August 2014): 85–88. http://dx.doi.org/10.4028/www.scientific.net/amm.606.85.
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The use of tetragonal zirconia as a dental restorative material has recently increased because of its unique mechanical and optical properties, as well as high biological compatibility with the oral cavity environment. However, the mechanical properties of zirconia can be severely degraded, which leads to the failure of dental restorations. This review focuses on the low-temperature degradation of dental zirconia and its effects on the properties of zirconia and on the oral environment. The purpose is to show the importance of this negative phenomenon and suggest guidelines for minimizing the aging of zirconia that is used as a dental restoration material.
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Mitronin, A. V., D. A. Ostanina, and E. Ch Abiev. "Reconstructing natural aesthetics of posterior teeth with direct composite restorations (a case report)." Endodontics Today 19, no. 1 (April 19, 2021): 57–60. http://dx.doi.org/10.36377/1683-2981-2021-19-1-57-60.
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One of the most common methods of dental treatment in a minimally invasive concept is a direct restoration of carious damaged teeth or teeth with dental trauma. In this article represents a clinical case of old unsatisfactory restorations replacement in teeth 36, 37 followed by restoration of hard tissue class II defects using direct composite restoration taking into account aesthetic and biomechanical aspects.
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Oliveira, Luciana Butini, Tereza Keiko Tamay, Marta Dutra Machado Oliveira, Célia Regina Martins Delgado Rodrigues, and Marcia Turolla Wanderley. "Human enamel veneer restoration: an alternative technique to restore anterior primary teeth." Journal of Clinical Pediatric Dentistry 30, no. 4 (July 1, 2006): 277–79. http://dx.doi.org/10.17796/jcpd.30.4.f07k700m45g294l4.
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Restoration of severely decayed primary teeth is a clinical challenge in Pediatric Dentistry. Among the restorative treatment options, the use of prefabricated crowns and resin composite restorations, either by means of direct or indirect techniques is mentioned in the literature. The purpose of this article is to describe the rehabilitation of primary anterior teeth in a 5-year-old patient. Dental treatment consisted on an anterior space maintainer prosthesis made with natural primary teeth, plus human dental enamel veneer (facet) restorations. The advantages of this technique are better esthetics and the natural enamel has physiologic wear and offers superficial smoothness and cervical adaptation compatible with those of the surrounding teeth.
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Scherrer, Susanne S., Janet B. Quinn, and George D. Quinn. "Fractography of Dental Restorations." Key Engineering Materials 409 (March 2009): 72–80. http://dx.doi.org/10.4028/www.scientific.net/kem.409.72.
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The dental community is using a variety of ceramic restorative materials such as porcelains (leucite or alumina based), glass-ceramics (leucite, mica, lithium disilicates), alumina-glass infiltrated, and CAD-CAM ceramics including pure alumina and zirconia (3Y-TZP) core materials. Polycrystalline ceramics such as alumina and zirconia serve as substructure materials (i.e., framework or core) upon which glassy ceramics are veneered for an improved appearance. Under masticatory loads, sudden fracture of the full-thickness restoration or of the veneering ceramic (chips) may occur. Stereomicroscope and scanning electron microscope analyses were used to perform qualitative (descriptive) fractography on clinically failed dental ceramic restorations. The most common features visible on the fracture surfaces of the glassy veneering ceramic of recovered broken parts were hackle, wake hackle, twist hackle, arrest lines, and compression curls. The observed features are indicators of the local direction of crack propagation and were used to trace the crack’s progression back to its initial starting zone (the origin). This paper presents the applicability of fractographic failure analyses for understanding fracture processes in brittle dental restorative materials and it draws conclusions as to possible design or processing inadequacies in failed restorations.
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Tong, N., and C. C. L. Wyatt. "Five-year Survival Rate of Bonded Dental Restorations in Frail Older Adults." JDR Clinical & Translational Research 6, no. 1 (February 19, 2020): 77–86. http://dx.doi.org/10.1177/2380084420905785.
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Introduction: Frail older adults residing in long-term care (LTC) facilities are among the most vulnerable to dental caries due to poor oral hygiene (OH), medication-related salivary hypofunction, carbohydrate-rich diets, and limited access to dental care. Providing dental restorations for LTC patients is challenging, and there are few studies investigating the longevity of restorations in this cohort. Multiple restorative materials have been used to restore tooth anatomy as well as address caries prevention using fluoride-based materials. Objectives: This study examined the longevity of bonded direct restorations placed in LTC patients. Specifically, we examined whether a difference in survival exists between resin composite (RC) and glass ionomer cement (GIC) direct restorations in frail older adults residing in LTC. Methods: Tooth-colored restorations placed in LTC patients between 2007 and 2012, within the University of British Columbia Geriatric Dentistry Program, were followed annually up to 5 y or until they incurred an event (i.e., re-restoration or tooth extraction) or the patient was lost to follow-up or deceased. Restoration status was documented within the Clinical Oral Disorder in Elders (CODE) Index annual oral health assessments. Mixed-effect logistic regression was calculated to determine hazard ratios, address within-patient correlation, and measure the effect size of multiple covariates. Results: A total of 3,201 dental restorations placed in 846 LTC patients were followed. This cohort of patients had a mean age of 86 y and high levels of oral and systemic disease. Over half were wheelchair bound and had compromised ability to perform OH. The overall 5-y survival rate was 60.3%, and there was no statistically significant difference in survival between RC and GIC. Conclusion: Tooth-colored restorations had reasonable longevity in LTC patients and had comparable survival to restorations placed in functionally independent, community-dwelling geriatric populations. No difference between RC and GIC was found with regards to restoration longevity in this population. Knowledge Transfer Statement: Direct restorations provided to frail older adults residing in LTC have reasonable longevity and should be expected to survive for the remainder of the patient’s life. As no detectable difference exists in survival rates between RC and GIC, operators should select appropriate restorative materials based on clinical conditions, patient factors, physical properties, and personal preference.
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Araújo, Patrícia Ferronato, Jessica Tiemi Ribeiro Ishii, and Antonio Setsuo Sakamoto Junior. "Técnica de estratificação natural em dente anterior – relato de caso." Prosthesis and Esthetics in Science 10, no. 40 (2021): 11–15. http://dx.doi.org/10.24077/2021;1040-s1115.
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Dental trauma injuries occur more frequently in upper anterior teeth, especially in enamel and dentin without pulp involvement. This article presents a clinical case report of a patient dissatisfied with the color of the tooth 21 restoration performed after suffering dental trauma. The format was adequate, so a previous molding of the palatal region was performed, and a condensing silicone guide was made. The use of the palatal guide facilitates the execution of the restoration and guides the layering of selected resins. Following the Natural Stratification concept, this case demonstrated a restorative treatment of direct restorations in composite resin, which can be considered an alternative for fractured anterior teeth, presenting clinical agility and excellent esthetic results.
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da Silva Pereira, Renata Afonso, Gisele Rodrigues da Silva, Luciana Mendes Barcelos, Karoline Guará Brusaca Almeida Cavalcanti, Álex Moreira Herval, Thiago Machado Ardenghi, and Carlos José Soares. "Practice-based analysis of direct posterior dental restorations performed in a public health service: Retrospective long-term survival in Brazil." PLOS ONE 15, no. 12 (December 22, 2020): e0243288. http://dx.doi.org/10.1371/journal.pone.0243288.
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The aim of this retrospective study was to evaluate the survival and associated factors for the longevity of direct posterior restorations and to verify whether the geographic location of public health units could influence the long-term survival of such restorations. Data were extracted from electronic patient files of the Brazilian public oral health services. The sample comprised 2,405 class I and II restorations performed 4 to 24 years ago (mean, 8.9 years) in 351 patients (6.8 teeth/patient) across 12 public health units located in different city regions (42 professionals—55 restorations). The restoration was considered successful if it had not been repaired or replaced at the time of evaluation; failure was defined as replacement of the restoration, the need for endodontic treatment, tooth/restoration fracture or tooth extraction. Data were analyzed using the Kaplan-Meier test for restoration survival and Cox regression to evaluate the factors associated with failure. The majority of the restorations involved the use of amalgam (85%), involved a single face (70%), and were without pulp/dentin capping (85%). The overall survival rate was 95%, and the mean observation time was 8.9 years. The restoration survival was 79% (95% CI: 60.6–89.5) over 24 years, and the mean survival time was 22.2 years (95% CI: 21.9–22.6 years). The annual failure rate up to 24 years was 0.9%. After the adjustment, only the number of restored faces and the geographic location where the restoration was performed remained associated with failure of the restoration. The direct posterior restorations performed at the evaluated public health service units presented high survival rates. The restorations of people with lower access to POHS had lower survival rates. Class I restorations presented higher survival rates than class II restorations with two or more faces, regardless of the restorative material used.
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Riley, J. L., G. H. Gilbert, G. W. Ford, J. L. Fellows, B. Rindal, and V. V. Gordan. "Judgment of the Quality of Restorative Care as Predictors of Restoration Retreatment: Findings from the National Dental PBRN." JDR Clinical & Translational Research 2, no. 2 (October 27, 2016): 151–57. http://dx.doi.org/10.1177/2380084416675838.
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The primary aim of this study was to test the hypothesis that a patient’s subjective assessments of the dentist’s technical competence, quality of care, and anticipated restoration longevity during a restorative visit are predictive of restoration outcome. This prospective cohort study involved 3,326 patients who received treatment for a defective restoration in a permanent tooth, participated in a baseline patient satisfaction survey, and returned for follow-up. Of the 4,400 restorations that were examined by 150 dentists, 266 (6%) received additional treatment after baseline. Reporting satisfaction with the technical skill of the dentist or quality of the dental work at baseline was not associated with retreatment after baseline. However, patients’ views at baseline that the fee was reasonable (odds ratio [OR], 1.6) was associated with retreatment after baseline, whereas satisfaction at baseline with how long the filling would last (OR, 0.6) was associated with less retreatment. These findings suggest that retreatment occurs more often for patients who at baseline are satisfied with the cost or who at baseline have less confidence in the restoration. The authors found no associations between restoration retreatment and the patients’ baseline evaluations of the technical skills of their dentists or perceptions of quality care. Knowledge Transfer Statement: Dental patients’ ratings of their dentist’s skills were not related to a restoration needing retreatment. Patients focus on other aspects of the dental visit when making this judgment.
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Peng, Guodong, and Hui Yan. "Short-term and long-term outcomes of zirconium dioxidebased dental restorations, and it effects on masticatory function." Tropical Journal of Pharmaceutical Research 21, no. 6 (August 10, 2022): 1301–7. http://dx.doi.org/10.4314/tjpr.v21i6.24.
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Purpose: To investigate the short- and long-term outcomes of zirconium dioxide-based restorations (ZDBR), and changes in masticatory function (MF).Methods: One hundred and two (102) patients who received restorative dentistry procedures were divided into two groups using random number method: control group (CG, n = 52, alloy-based restorations) and study group (SG, n = 50, zirconium dioxide restorations). Treatment efficacy, quality, levels of IL-8 and IL-6 in gingival sulcus fluid, and satisfaction scores were compared.Results: The SG showed better outcomes and restoration quality than CG. After restoration, SG showed greater decrease in IL-8 and IL-6 levels than CG (p < 0.05), while IL-8 and IL-6 levels were higher in SG and CG than those before restoration (p < 0.05). After 1 and 6 months of restoration, SG showed increased dental appearance satisfaction and a higher success rate than CG (p < 0.05). Occlusal force and MF were significantly improved in both groups (p < 0.05). Gingival index, bleeding index, plaque index, and tooth looseness after restoration significantly improved in both groups, but were lower in SG than in CG (p < 0.05).Conclusion: In oral restorations, ZDBR is more effective in terms of short-term and long-term outcomes. Patients' occlusal force and MF are better restored, and patients' quality of life is also significantly improved. Therefore, ZDBR in oral restorations is feasible but further clinical trials are required.
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Aishwarya S, Pradeep S, and Suresh V. "Association of age and sex of patients undergoing class 2 amalgam restoration in mandibular premolars." International Journal of Research in Pharmaceutical Sciences 11, SPL3 (September 12, 2020): 347–52. http://dx.doi.org/10.26452/ijrps.v11ispl3.2941.
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The most versatile restorative materials in the field of dentistry are dental amalgam which constitutes 75% of all restorative materials used by dental practitioners. Due to its excellent load-bearing capacity and low costs, it is still the top priority for many dentists. In this retrospective study, the details of the 86,000 patient records were reviewed and analyzed, out of which 160 patients who had undergone class 2 amalgam restoration in mandibular premolars between June 2019 to March 2020 were included in this study. The details like age, gender, tooth number and the surface of restorations were evaluated and entered in SPSS, version 23. The data were analyzed through a chi-square test. It was observed that there is no significant association between age, and surface distribution in mandibular premolars (p>0.05), however, on analyzing the association between gender and tooth surface, the statistical significance between gender and tooth surface was found ( p <0.05). Within the limitations, the mandibular second premolars had undergone more class 2 amalgam restoration than the first premolar. Disto occlusal restoration was performed in higher numbers, followed by mesio occlusal restoration in both genders.
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Bin-Shuwaish, Mohammed S. "Effects and Effectiveness of Cavity Disinfectants in Operative Dentistry: A Literature Review." Journal of Contemporary Dental Practice 17, no. 10 (2016): 867–79. http://dx.doi.org/10.5005/jp-journals-10024-1946.
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ABSTRACT The degree of success in the elimination of bacteria during cavity preparation and prior to the insertion of a restoration may increase the longevity of the restoration and therefore the success of the restorative procedure. The complete eradication of bacteria in a caries-affected tooth, during cavity preparation, is considered a difficult clinical task. In addition to weakening the tooth structure, attempts to excavate extensive carious tissue completely, by only mechanical procedures, may affect the vitality of the pulp. Therefore, disinfection of the cavity preparation after caries excavation can aid in the elimination of bacterial remnants that can be responsible for recurrent caries, postoperative sensitivity, and failure of the restoration. However, the effects of disinfectants on the restorative treatment have been a major concern for dental clinicians and researchers. This review aims to explore existing literature and provide information about different materials and techniques that have been used for disinfecting cavity preparations and their effects and effectiveness in operative dentistry and, therefore, helps dental practitioners with clinical decision to use cavity disinfectants during restorative procedures. Antimicrobial effectiveness and effects on the pulp and dental restorations, in addition to possible side effects, were all reviewed in this paper. How to cite this article Bin-Shuwaish MS. Effects and Effectiveness of Cavity Disinfectants in Operative Dentistry: A Literature Review. J Contemp Dent Pract 2016;17(10):867-879
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Esian, Daniela, Lucian Barbu Tudoran, and Cristina Bica. "Dentin Hybridization - Modern Based Therapy of Restoration of Compromised Dental Structure." International Journal of Scientific Research 2, no. 10 (June 1, 2012): 1–4. http://dx.doi.org/10.15373/22778179/oct2013/108.
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Esian, Daniela, Lucian Barbu Tudoran, and Cristina Bica. "Dentin Hybridization - Modern Based Therapy of Restoration of Compromised Dental Structure." Indian Journal of Applied Research 3, no. 10 (October 1, 2011): 1–4. http://dx.doi.org/10.15373/2249555x/oct2013/101.
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Ausiello, Pietro, Amanda Maria de Oliveira Dal Piva, Alexandre Luiz Souto Borges, Antonio Lanzotti, Fausto Zamparini, Ettore Epifania, and João Paulo Mendes Tribst. "Effect of Shrinking and No Shrinking Dentine and Enamel Replacing Materials in Posterior Restoration: A 3D-FEA Study." Applied Sciences 11, no. 5 (March 3, 2021): 2215. http://dx.doi.org/10.3390/app11052215.
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The aim of the present study was to investigate the effect of shrinking and no shrinking dental filling materials combination in posterior restorations under the combined effects of polymerization shrinkage and occlusal load by means of 3D Finite Elements Analysis. Six computer-generated and restored class I or class II cavities models of a lower molar were designed in the CAD software and evaluated according to the cavity and restorative procedure. Different shrinking and no shrinking adhesive materials combination with diverse Young’s modulus were considered. A food bolus was modeled on the occlusal surface replicating the chewing load using static linear analyses Polymerization shrinkage was simulated for the shrinking different restorative materials. The maximum principal stress was selected as analysis criteria. All models exhibited higher stresses along the dentine restoration interfaces with different magnitude and a similar stress trend along enamel restoration interface. Stress values up to 22 MPa and 19 MPa were recorded in the enamel and restoration, respectively. The use of elastic not shrinking material layer in combination with bulk fill composite reduced the stress magnitude in dentine and enamel to replace dental tissues. Class I and class II posterior cavities adhesively restored with shrinking filling material’s combination showed the most unfavorable stress concentrations and the multilayer technique is a promising restorative alternative in posterior adhesive restorations when deep dentin and enamel volumes are missing.
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Nadgere, Jyoti B., Naisargi P. Shah, and Aditi JP Jain. "Current Trend in fabricating a Full Ceramic Restoration for Discolored Anterior Teeth: A Dental Laboratory Survey." Journal of Contemporary Dentistry 6, no. 3 (2016): 161–65. http://dx.doi.org/10.5005/jp-journals-10031-1164.
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ABSTRACT Aim The aim of the survey conducted in dental laboratories was to evaluate the current trend in fabricating a full ceramic restoration for discolored anterior teeth through a questionnaire and personal interaction with the dental technician. Materials and Methods The survey questionnaire consisted of 20 questions aimed toward the current trend in fabricating a full ceramic restoration for discolored anterior teeth. This questionnaire was validated by a panel of senior prosthodontists and technicians and was sent to 32 dental technicians in Mumbai and Navi Mumbai. Results and conclusion The results of the study showed that majority of the dental technicians preferred taking the stump shade themselves by visiting the clinic or inviting the patient to the laboratory. Majority of the dental technicians preferred using lithium disilicate material and its medium opacity ingots to fabricate restorations by the layering technique for masking discolored anterior teeth. Majority of the technicians believed that their dentists did not use try-in paste prior to luting of the restoration. Clinical significance This survey would help to improve the rapport between the clinicians and dental laboratories and optimize the esthetics of the restorations fabricated for anterior discolored teeth. How to cite this article Shah NP, Jain AJP, Ram SM, Nadgere JB. Current Trend in fabricating a Full Ceramic Restoration for Discolored Anterior Teeth: A Dental Laboratory Survey. J Contemp Dent 2016;6(3):161-165.
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Andreevski, Aleksandar. "COMPOSITE RESTORATIONS IN DENTISTRY." Teacher of the future 31, no. 4 (June 5, 2019): 879–82. http://dx.doi.org/10.35120/kij3104879a.
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The development of the dental hard tissue represents a process in which at the same time are happening physical and chemical changes. But, very often, during their everyday use, people are facing teeth disorders which open doors for thinking and possible procedures on how to bring them back to their original state thru regeneration or restoration. The purpose of this act is not only to please the aesthetic appearance, but the functional meaning of the tooth as well. Analysis of home and foreign professional literature of this field gives us to know that the reason for tooth restoration manifests in the shape of dental carries, trauma, tooth wear and genetic defects. A substantial meaning for the patients is the change of old filling due the discoloration that occurs on the composite restorations and the teeth, an aesthetic correction is needed in the shape of direct restoration. During recent years an upward trend is noticed in the use of indirect restoration technics realized with aid of dental laboratory on previously taken impression. Only thru a true proper education, dentists high ethic, and application of the standards of the World Health Organization can we maintain the fully developed tooth, and perform a proper restorative procedure when needed.
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Fornari, Bárbara Scarton, Caroline Solda, Lara Dotto, and Lilian Rigo. "Factors associated with decision-making of replacing the temporary coronal restoration after endodontic treatment." Brazilian Journal of Oral Sciences 21 (November 3, 2021): e225580. http://dx.doi.org/10.20396/bjos.v21i00.8665580.
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Aim: This study aimed to evaluate the decision-making by patients to replace temporary restorations with permanent restorations after endodontic treatment and to verify the associated factors and evaluate the quality/integrity of the temporary restorative material within one month. Methods: This is a cross-sectional study using non-probabilistic sampling which analyzed patients after one month of endodontic treatment. The self-administered questionnaire contained sociodemographic, treatment decision-making and endodontic treatment questions. The restoration present in the mouth was evaluated in the clinical oral examination. The Poisson Regression test was used to verify the prevalence ratio. Results: The prevalence failure to perform permanent restorations was 61.1% of patients, and 42.7% reported not having adhered. The reasons are lack of time and not knowing the importance of replacing the restoration with a definitive one. The glass ionomer temporary restorative frequency was higher among those who chose not to replace the temporary restoration with a permanent one (PR=5.19; 95%CI 2.10-12.33). In addition, there was an association between the quality of the restorative material and the type of material, and the best clinical quality of the restoration was statistically associated with glass ionomer and composite resin. Conclusions: The findings show the importance of guidance by the dental surgeon in helping patients decide to replace their temporary restoration.
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Asiri, Waleed. "Dental restoration selection by students at southern Saudi Arabian universities." Bioinformation 18, no. 10 (October 31, 2022): 986–90. http://dx.doi.org/10.6026/97320630018986.
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Dental caries is a serious oral health concern and restoration of teeth is the main solution to this issue. Various restorative materials having different properties are used for posterior restoration. The aim of this study was to find that which factors can affect the choice of selection of material for posterior restoration among dental graduate students. For this purpose, a questionnaire was shared electronically among students of three different universities (King Khalid University, Jazan University, and Najran University). After collection, data were subjected to a chi-square test to check the significance. It has been observed that almost 50% of participants choose composite resin for posterior restoration. Results showed that according to most (more than 50%) of the dental students in Southern Saudi Arabia, different patient and tooth condition related factors can affect the choice for selection of restorative material.
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Broadbent, JM, CM Murray, DR Schwass, M. Brosnan, PA Brunton, KS Lyons, and WM Thomson. "The Dental Amalgam Phasedown in New Zealand: A 20-year Trend." Operative Dentistry 45, no. 3 (May 1, 2020): 255–64. http://dx.doi.org/10.2341/19-024-c.
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SUMMARY Background and Objectives: Information on the choice of material and performance of restorations placed in a dental practice annually is limited. The Minamata Convention on Mercury is likely to affect the use of amalgam worldwide. The objective of this research was to investigate the use of restorative materials at the University of Otago Faculty of Dentistry in New Zealand from 1998 to 2017. Methods: Data from the Faculty of Dentistry's database from the years of interest were compiled. These data included information on the characteristics of restorations, including information on the material used and number of surfaces involved for each restoration. The tooth in which each restoration was placed was categorized by arch, tooth type, and deciduous or permanent dentition. Results: Records identified 227,514 permanent restorations placed from January 1998 to December 2017, of which 91.7% were direct restorations. Among direct restorations, composite resin was the most commonly used material, followed by amalgam, glass ionomer, and compomer. The use of amalgam for direct restorations decreased from 52.3% of direct restorations in 1998 to 7.1% in 2017. A corresponding increase was observed in the use of tooth-colored direct restorations, particularly composites. Among indirect restorations, porcelain fused to metal, gold, and stainless steel (in pediatric applications) were the materials most frequently used. Conclusions: Despite having no official policy on reducing the use of dental amalgam, the Faculty of Dentistry is following the global trend in reducing its use, with composite resin now well established as the predominant restorative material used. If the current rate of decline persists unchecked, the Faculty of Dentistry could transition to being amalgam free by 2020, although it seems likely that the characteristics and principles of use of the material (and its removal) will be taught for some time to come. This knowledge is important to planning curriculum changes needed to prepare graduates for clinical practice.
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Hernández-Vázquez, Rosa Alicia, Guillermo Urriolagoitia-Sosa, Rodrigo Arturo Marquet-Rivera, Beatriz Romero-Ángeles, Octavio-Alejandro Mastache-Miranda, and G. Guillermo Urriolagoitia-Calderón. "Numerical Analysis of a Dental Zirconium Restoration and the Stresses That Occur in Dental Tissues." Applied Bionics and Biomechanics 2019 (September 5, 2019): 1–13. http://dx.doi.org/10.1155/2019/1049306.
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When it is about restorative dental materials, aesthetics is traditionally preferred. This has led to the selection of materials very visually similar to the enamel, but unfortunately, their mechanical properties are not similar. This often translates into disadvantages than advantages. In the present work, a comparison is made of the stresses that occur during dental occlusion (dental bit) in a healthy dental organ and those that are generated in a dental organ with a dental zirconium restoration. Numerical simulation was carried out by means of the Finite Element Method, in computational biomodels, from Cone-Beam Tomography, to obtain the stresses generated during dental occlusion. It was found that the normal and von Mises stresses generated are substantially greater in the molar with restoration compared to those produced in the healthy molar. In addition, the normal function of the enamel and dentin to disperse these stresses to prevent them from reaching the pulp is altered. Therefore, it is necessary to analyze the indiscriminate use of this restoration material and consider other aspects, in addition to aesthetics and biocompatibility for the choice of restorative materials such as biomechanical compatibility.
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Lei, Xiao Bao, and Feng Xie. "Semi-Sintered Medical Zirconia Ceramic Used for Denture CAM Processing." Key Engineering Materials 693 (May 2016): 597–604. http://dx.doi.org/10.4028/www.scientific.net/kem.693.597.
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CAD/CAM technology has been widely applied in the field of oral restoration, which creates a revolutionary change in the pattern of traditional handmade denture and puts forward new demands on the past medical dental restorative material. The materials used for making dentures should own good machining properties and biocompatibilities. Medical zirconium ceramic have a broad prospect in the field of oral restoration because of its features are high strength, high toughness, good biocompatibility, high similarity of performance and aesthetic effect of processed dentures to real dentals. Dental restoration was obtained initially by NC machining using the feature that zirconium ceramic was not fully hardened but had a definite range of strength in the semi-sintered state. Experimental results shown that the ceramic denture machined by this processing has better surface quality and can satisfy requirements of oral restoration. Observation results shown that cutting surfaces were smooth, grinding cracks were tiny and uniform, and there were no obvious fracture gaps on edges and complex irregular surface of neck could be better reflected.
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Poudel, Keshav Raj, Suman Gautam, Prenit Pokhrel, Bijendra Raj Raghubanshi, Amshuman Shrestha, and Binod Raut. "Dentists' perspective on preference for direct restorative materials for different tooth cavities: A study from two colleges in Kathmandu, Nepal." Journal of Kathmandu Medical College 3, no. 2 (October 9, 2014): 72–77. http://dx.doi.org/10.3126/jkmc.v3i2.11230.
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Background: Restoration of carious teeth is required to preserve anatomy, function and aesthetics of a tooth. Proper restoration of carious teeth is paramount for the prevention of progression of a dental caries so as to obviate the need for root canal treatment. Location, extent, type, duration and cost play the major roles for the selection of a dental filling material.Objective: This study was set to know the preference of dentists for the selection of filling materials for different tooth cavities.Methods: This was cross-sectional observational study carried out at Kantipur Dental College and KIST Medical College for a period of six months. Pre-structured questionnaires were distributed to the dentists who were in dental practice and collected questionnaires were analyzed for the results. Data were compiled, entered and analyzed using Microsoft Excel 2007 and Epi Info 2000. Yates corrected Chi square test was used wherever applicable and level of significance was set at <0.05.Results: Out of 65 questionnaires distributed to the dental practitioners, 57 (87.7%) questionnaires were returned. Composite was the material of choice as the restorative material for all kinds of tooth cavities except for class V for which glass ionomer cement was the main choice (52.6%). After composite, dental amalgam was second most preferred material for posterior tooth restorations. Order of preference for filling materials for posterior restorations were: composite (52.6%), dental amalgam (47.4%), miracle mix (68.3%; P<0.05) and glass ionomer cement (42.1%). Majority of practitioners (78.9%,P<0.05) opined that strength and durability of restorative material is the main guiding factor for the selection of the filling material for posterior tooth restorations. Additionally, dental amalgam had higher (68%, P< 0.05) patient satisfaction with respect to cost and longevity or durability and was associated with less tiring and time consuming procedure (84%; P<0.05) on dentists’ view.Conclusion: Majority of dentists opined that composite is the more preferred filling material for both anterior and posterior tooth restorations. For posterior tooth cavities (mainly for class I, II and VI) after composite, the order preference for filling materials was amalgam, miracle mix and glass ionomer cement.DOI: http://dx.doi.org/10.3126/jkmc.v3i2.11230Journal of Kathmandu Medical CollegeVol. 3, No. 2, Issue 8, Apr.-Jun., 2014Page: 72-77
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Bittar, Daniela Gonçalves, Christiana Murakami, Daniela Hesse, José Carlos Pettorossi Imparato, and Fausto Medeiros Mendes. "Efficacy of Two Methods for Restorative Materials’ Removal in Primary Teeth." Journal of Contemporary Dental Practice 12, no. 5 (2011): 372–78. http://dx.doi.org/10.5005/jp-journals-10024-1062.
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ABSTRACT Aim This in vitro study aimed to compare the time required for removal, the presence of residues of restorative material, tooth structure loss and dental surface morphology after removal of composite resin and amalgam restorations from occlusal cavities in primary molars using conventional high-speed bur and CVDentus® ultrasonic diamond tips. Materials and methods A total of 37 primary molars were allocated into four groups: Group 1 (n=9)—amalgam restorations removed using high-speed bur; Group 2 (n=10)—amalgam restorations removed using ultrasonic tip; Group 3 (n=8)— composite resin restorations removed using high-speed bur; Group 4 (n=10)—composite resin restorations removed using ultrasonic tip. After being restored, teeth were sectioned and analyzed through stereoscopic microscope images before and after restoration removal. The structural loss was analyzed by software of image analysis, and an examiner assessed for the presence of residues. Scanning electron microscopy was used to evaluate the morphology. Time and structural loss values were compared using ANOVA, and the percentages of samples with residues using Fisher test. Results There was no statistically significant difference in the tooth structure loss among different methods and restorative materials, as well as in the presence of residues of restorative material. However, diamond burs were faster than the ultrasonic method for both materials. Differences in dental morphology were observed between the methods of restoration removal, but not related to the restorative material. Conclusion Both conventional high-speed bur and ultrasonic diamond tip methods remove similar amounts of tooth structure, but the removal performed with diamond tips in ultrasonic devices is slower. Clinical significance This study shows that both ultrasonic and conventional high-speed bur methods for removing restorations generate similar loss of sound dental tissue, but the former is slower. How to cite this article Bittar DG, Murakami C, Hesse D, Imparato JCP, Mendes FM. Efficacy of Two Methods for Restorative Materials’ Removal in Primary Teeth. J Contemp Dent Pract 2011;12(5):372-378.
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Laccabue, M., RL Ahlf, and JW Simecek. "Frequency of Restoration Replacement in Posterior Teeth for U.S. Navy and Marine Corps Personnel." Operative Dentistry 39, no. 1 (January 1, 2014): 43–49. http://dx.doi.org/10.2341/12-406-c.
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SUMMARY Statement of Problem There are no recent data that describe the replacement rates of resin composite and dental amalgam restorations placed by US Navy dentists. Information is needed to provide the best possible care for our military personnel which would minimize the probability of dental emergencies, especially for those who are deployed. Purpose The purpose of this study was to determine if the frequency of posterior restoration replacement in military personnel differed based on the type of restorative material utilized. Methods and Materials Data contained in dental records in an observational study (retrospective cohort) were evaluated to identify resin composite and dental amalgam restorations placed by navy dentists in posterior teeth. The status of all erupted, unerupted, missing, and replaced teeth was documented. The type and condition of all existing restorations were recorded for each posterior tooth. Investigators reviewed 2921 dental records, and of those, 247 patients met the criteria for inclusion in the study. A total of 1050 restorations (485 resin composite and 565 amalgam) were evaluated. Results A Cox proportional hazards model was adjusted for number of tooth surfaces restored, caries risk, and filled posterior surfaces at initial exam. The overall rate of replacement for all restorations in the sample was 5.7% during the average 2.8-year follow-up. No significant elevation of risk for restoration replacement existed when comparing resin composite and amalgam. Both the number of restored surfaces and caries risk status were independent risk factors for replacement. When restoring multisurface cavity preparations, providers placed amalgams by an approximate 2:1 ratio over resin composites for this study population. Conclusion The results for this study show that no difference existed in the rate of replacement for amalgam vs resin composite. When restorations increased from just a single occlusal surface to additional surfaces, the rate of replacement was elevated and statistically significant for both materials. A higher caries risk status was also significant in elevating replacement rates for both materials.
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Mitronin, A. V., D. A. Ostanina, and E. A. Ismaylov. "Esthetic-functional reconstruction of posterior teeth with direct restorations (a case report)." Endodontics Today 19, no. 4 (December 23, 2021): 330–33. http://dx.doi.org/10.36377/1683-2981-2021-19-4-330-333.
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Teeth restoration in respect with anatomy and function with direct composite restoration does not lose its relevance for many years. The driving factor for the widespread use of direct restorations is satisfactory aesthetic results, simplicity and high speed of their implementation, and relatively low cost. Moreover, dental restorations in direct technique are constantly being improved due to the unprecedented growth of technologies in the production of dental materials and equipment, which are now living their golden age. This article presents a clinical case of replacing old incompetent fillings with impaired marginal fit of the posterior teeth with highly aesthetic and functional composite restorations.
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Pai, Sneha. "Association of age with class VI composite restoration." Bioinformation 16, no. 12 (December 31, 2020): 1094–99. http://dx.doi.org/10.6026/973206300161094.
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Dental caries is the major oral health problem in most of the countries, affecting 60-90% of school children and a vast majority of adults. Therefore, it is of interest to evaluate the association of age with Class VI defects restored with composite restorations. We used 102 cases with data regarding Class VI composite restorations in a datasheet of 86,000 records at Saveetha Dental College, India for this study. Data shows that Class VI restorations were commonly seen in upper anterior teeth in the age group of 51 and above. The cavities prepared to receive Class VI restoration followed a conservative design of caries removal and used direct restoration techniques for reconstruction of the lost tooth structure.