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Grey, Nick JA, and Rose MacDonald. "An Investigation of Aspects of Design of Partial Dentures." Primary Dental Care os11, no. 2 (April 2004): 55–56. http://dx.doi.org/10.1308/135576104773711309.
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Purpose The purpose of the study was to establish the incidence of the prescription of partial denture design by dentists and also to establish the nature of clasp design, if prescribed. Basic procedures Data relating to cobalt-chromium partial dentures were collected from filed slips from a dental laboratory that provided fabricated cobalt-chromium partial dentures for hospital and general dental practitioners. The data collected related to whether or not there was a design for the prosthesis and, also, to the design of clasp (gingivally or occlusally approaching). Main findings Only 39% of slips had evidence of a partial denture design and of those, 41.5% involved the prescription of an inappropriate design of clasp. Principal conclusions The incidence of partial denture design by a group of dentists using a commercial dental laboratory is unacceptably low. Despite evidence advocating the use of gingivally-approaching clasps on teeth anterior to (and including) premolars, there is still an unacceptably high level of the use of occlusally-approaching designs.
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Leyssen, Wouter, Jasmeet Heran, and AD Walmsley. "Acrylic dentures: fill the gap. part 2. indirect retention, major connectors, review of the design and case study." Dental Update 50, no. 2 (February 2, 2023): 93–96. http://dx.doi.org/10.12968/denu.2023.50.2.93.
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Many dental students find the principles of partial denture design difficult to learn. It is also recognized that dentists in general practice within the UK do not always provide sufficient design specification on their laboratory prescription. It therefore seems that confusion about how to come up with a suitable denture design persists after graduation. The aim of the second part of this series relates to design principles of indirect retention, designing the major connector and how to put together all these elements when reviewing the overall design, and how to apply the denture concepts to a case study. This article also discusses recent advances in mucosal-borne partial dentures. CPD/Clinical Relevance: This article revises the principles of partial denture design specifically in relation to mucosal-borne partial dentures.
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Leyssen, Wouter, Jasmeet Heran, and AD Walmsley. "Acrylic dentures: fill the gap. Part 1. overview, support, retention, reciprocation and bracing." Dental Update 50, no. 1 (January 2, 2023): 49–52. http://dx.doi.org/10.12968/denu.2023.50.1.49.
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Many dental students find the principles of partial denture design difficult to learn. It is also recognized that dentists in general practice within the UK do not always provide sufficient design specification on their laboratory prescription. In that regard, it seems that confusion about how to come up with a suitable denture design persists after graduation. The aim of this series of articles is therefore to review the principles of denture design as applied to mucosal-borne dentures. Part 1 focuses on support, retention, reciprocation and bracing. CPD/Clinical Relevance: This article reviews the principles of design in relation to mucosal-borne partial dentures.
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Friel, Tim, and Sarah Waia. "Removable Partial Dentures for Older Adults." Primary Dental Journal 9, no. 3 (September 2020): 34–39. http://dx.doi.org/10.1177/2050168420943435.
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Improvements in oral health including increased retention of natural teeth have given rise to a partially dentate older population. Replacement of missing natural teeth is important to improve function, aesthetics and quality of life for this patient group. A variety of options are available to replace missing teeth in partially dentate older adults, including fixed, removable and implant retained prostheses. This article will discuss the provision of removable partial dentures including treatment planning and denture design. When planning removable partial dentures, careful attention must be paid to stabilising the patient prior to delivering any prosthesis. Partial dentures should be designed to minimise the potential for plaque accumulation with carefully designed metal based frameworks. Acrylic resin can also be utilised with attention to detail to minimise the risk of damage to delicate supporting tissues. Removable dentures have the advantage that they can be readily added to in the event of further tooth loss which may be particularly relevant for older adults. Partial dentures which optimise support, retention and stability can function very successfully and significantly improve patients’ oral health related quality of life.
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Aslam, Samina, Imran Khan, Mubashir Sharif, Azhar Ali Bangash, Muhammad Afzal, and Mansoor Khan. "Designing Cast Partial Dentures in Relation to Partial Edentulism." Pakistan Armed Forces Medical Journal 72, no. 4 (September 5, 2022): 1329–33. http://dx.doi.org/10.51253/pafmj.v72i4.7712.
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Objective: To determine the pattern of partial edentulism and the cast removable dental prosthesis design in relation to the Classes recorded.
Study Design: Cross-sectional study.
Place and Duration of Study: Department of Prosthodontics, Armed Forces Institute of Dentistry (AFID), Rawalpindi Pakistan, from Apr to Sep 2021.
Methodology: A total of 67 partially dentate male and female patients presenting to the Prosthodontics Department requiring partial cast dentures were included in the study. Visual inspection of the master casts and partial denture frameworks was carried out in the laboratory. Kennedy's Classification, modification areas, type of major connector, direct retainer, rest and use of indirect retention were recorded.
Results: The most prevalent Class of partially dentate arch was Kennedy Class-II in maxilla 10 (45.5%) and Class-I and III in mandible 15 (33.3%) each. Major connectors most frequently encountered were anteroposterior palatal strap (59.1%) and lingual bar (57.8%). Circumferential clasp (35.8%) was the most used retainer type in Classes II and III, whereas RPI was mostly found in Classes I and II (32.1%). Occlusal rests were most commonly used (72.4%). Indirect retention was mostly used in Class-I and II denture frameworks (95.9%).
Conclusion: The most commonly encountered partial edentulism pattern was Kennedy's Class I and II. Following basic principles of RPD design can help elevate the standards of removable denture treatment.
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Yip, Kevin H.-K., Daniel T.-S. Fang, Roger J. Smales, Philip RH Newsome, and Tak W. Chow. "Rotational Path of Insertion for Removable Partial Dentures with an Anterior Saddle." Primary Dental Care os10, no. 1 (January 2003): 13–16. http://dx.doi.org/10.1308/135576103322504058.
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The provision of removable partial dentures remains a viable treatment modality for many partially dentate patients. Replacing missing anterior teeth with a removable partial denture using a rotational path of insertion provides improved retention and appearance. The use of a rotational path of insertion also provides additional retention for a removable partial denture restoring combined anterior and posterior bounded saddles. Two case reports demonstrate the use of the rotational path of insertion for partial denture design.
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Dula, Linda J., Enis F. Ahmedi, Zana D. Lila-Krasniqi, and Kujtim Sh Shala. "Clinical Evaluation of Removable Partial Dentures on the Periodontal Health of Abutment Teeth: A Retrospective Study." Open Dentistry Journal 9, no. 1 (March 31, 2015): 132–39. http://dx.doi.org/10.2174/1874210601509010132.
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The aim of this retrospective study was to evaluate the effect of removable partial dentures in periodontal abutment teeth in relation to the type of denture support and design of RPD in a five-year worn period. Methods : A total of 64 patients with removable partial dentures (RPDs), participated in this study. It were examined ninety-one RPDs. There were seventy-five RPDs with clasp-retained and sixteenth were RPDs with attachments. There were 28 females and 36 males, aged between 40-64 years, 41 maxillary and 50 mandible RPDs. For each subjects the following data were collected: denture design, denture support, and Kennedy classification. Abutment teeth were assessed for plaque index (PI), calculus index (CI), blending on probing (BOP), probing depth (PD), gingival recession (GR), tooth mobility (TM). Level of significance was set at p<0.05. Results : According to denture support of RPD, BOP, PD, PI, GR, CI and TM-index showed no statistically significant difference. Based on the denture design of RPD’s, BOP, PD, PI, CI, and TM-index proved no statistically significant difference. Except GR-index according to denture design confirmed statistically significant difference in RPD with clasp p<0.01. The higher values of all periodontal parameter as BOP, PD, PI, CI and TM were in patients with RPD’s with claps comparing with RPD’s with attachment. Conclusion : RPD’s with clasp increased level of gingival inflammation in regions covered by the dentures and below the clasp arms in abutment teeth.
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Daya, Ruqaiya, and C. Peter Owen. "Conformity of removable partial denture designs from three laboratories to a set of design principles." South African Dental Journal 77, no. 08 (November 23, 2022): 459–64. http://dx.doi.org/10.17159/2519-0105/2022/v77no8a1.
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Purpose. The purpose of this study was to assess and to compare the technical quality of removable partial dentures (RPDs) servicing both public and private sectors in relation to biomechanically acceptable principles. A convenience sample of work carried out in three commercial dental laboratories servicing both the private and government sectors was used to provide a descriptive study of the laboratory stage of fabrication of RPDs over a 3-month period. Prescription sheets, master casts and completed dentures of 114 cases were evaluated and procedural and design-related information data were captured for each case. The results were disappointing in that not one of the RPDs evaluated conformed to commonly accepted principles. Not one dentist prescribed the design of the denture. Only one cast was surveyed to determine the path of insertion and any undercuts for the placement of clasps, yet 119 clasps were placed. Although 81 rests were used (in only 25 of the dentures), only 11 of those rests were pre-prepared on the teeth. Only 8 of the 95 acrylic-based dentures had any rests, making the remainder entirely mucosa-borne and therefore potentially iatrogenic.The study suggests that principles of RPD design taught during undergraduate training are not being adequately practised in both private and public sectors; and if practised the RPDs are not designed, nor constructed to requirements guided by design principles. Further training of dental technicians and clinicians is clearly indicated, and consideration should be given to a system of clinical audit to identify and prevent the malpractice observed in this study. In addition, ethical and legal guidelines emphasising the roles of clinicians and technicians in the prescription and design of RPDs in South Africa should be developed; and the mandatory comprehensive completion of laboratory work authorisation forms by dental clinicians should be considered.
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Azeem, Syed Hammad Rizvi, Rummana Aqeel, Afsheen Zaki, Summiya Ijaz, Sofia Syed, and Nimra Nadeem. "Prevalence and Distribution of Denture Induced Oral Mucosal Lesions among patients Managed In Lahore Teaching Hospital." Pakistan Journal of Medical and Health Sciences 16, no. 5 (May 26, 2022): 179–82. http://dx.doi.org/10.53350/pjmhs22165179.
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Background: Oral mucosal lesions commonly develop in denture wearers and are abnormal changes in mucosal colour, texture, ulceration, edema and hyperplasia. They greatly affect the quality of a patient’s life as they have impact on swallowing, speech and mastication with symptoms of burning, pain and irritation. Aim: To find out prevalence, pattern and distribution of most commonly observed oral mucosal lesions in patients wearing removable dentures and their association with age, gender, denture age, nocturnal use and denture hygiene habits. Study design: A cross sectional; observational study Place and duration: Lahore Medical and Dental College from3rd April till3rd July 2021. Methodology: Hundred partially and completely edentulous patients of both genders were included in the study. The age ranged of the patients was between 30 to 80 years. It was a cross sectional observational study. Non probability purposive sampling was used to select the patients. Patient wearing complete or partial dentures in both arches or single arch for at least three months were included. The clinical examination was carried out and depending on clinical appearance of mucosa the diagnosis of denture induced mucosal lesions was made i.e., denture stomatitis, traumatic ulcers and hyperplasia Results: Out of 100 patients 40.0% had no mucosal lesions associated with dentures whereas 60% patients presented with lesions. Out of all the lesions the most frequently reported lesion was the traumatic ulcer 45%, followed by denture induced hyperplasia 10%. Denture stomatitis was 3% and angular cheilitis was least reported in our patients 2%. 36% patients clean their dentures regularly and 64% patients do not clean their dentures or being irregular, Night wearing of the prosthesis was found in 54% patients whereas 46% never wore dentures while sleeping. Conclusion: The prevalence of oral mucosal lesions with complete or partial removable dentures were 60% reported in our patients and traumatic ulcers were the frequently observed lesion. Furthermore, significant association of all lesions with factors like patient’s age, duration of denture use, nocturnal wearing and denture hygiene was found. Keywords: Angular cheilitis, Complete Dentures, Denture Stomatitis,Denture related lesions, Edentulism, Hyperplasia
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Sadig, Walid M., and Ayodeji T. Idowu. "Removable Partial Denture Design: A Study of a Selected Population in Saudi Arabia." Journal of Contemporary Dental Practice 3, no. 4 (2002): 40–53. http://dx.doi.org/10.5005/jcdp-3-4-40.
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Abstract Determination of the incidence of various classes of removable partial dentures (RPDs) including their designs and their comparison with previous studies provide clinically useful information for dental training and continuing education. The purpose of this study is to determine the pattern of partial edentulism, the major connector, clasping, and design of 740 cobalt chromium RPD frameworks constructed for a selected population in Saudi Arabia. RPD framework design information and patient personal data were obtained from the work authorization form and the dental records respectively. The relationship among age, sex, nationality, and various Kennedy classes of the RPDs was determined by chi-square statistical analysis. Results indicate that Kennedy Class III removable partial dentures were the most frequently constructed. Although gender had no significant relationship, age and nationality had statistically significant relationship with the distribution of various Kennedy classes of removable partial dentures. Lingual bars and anterior posterior palatal straps were the most commonly used mandibular and maxillary major connectors. Lingual and palatal plates, however, were more frequently used than any major connectors for distal extension RPDs. Comparison with previous findings confirms the established variation in designing RPDs. The distribution of partially edentulousness revealed the influence of the general pattern of tooth loss, which could be modified by patient's demands and socio-economic status. Practitioners need to avail themselves fully of basic RPD design principles concerning the most commonly encountered classes of RPDs. Citation Sadig WM, Idowu AT. Removable partial denture design: A study of a selected population in Saudi Arabia. J Contemp Dent Pract 2002 November;(3)4:040-053.
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Jepson, N. J., J. M. Thomason, and J. G. Steele. "The influence of denture design on patient acceptance of partial dentures." British Dental Journal 178, no. 8 (April 1995): 296–300. http://dx.doi.org/10.1038/sj.bdj.4808742.
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Haryani, Wiworo, Rachma Indahsari, and Sutrisno Sutrisno. "The relationship between levels of knowledge and interest in using the partial dentures: A case at Yogyakarta’s private dental clinic, Indonesia." GHMJ (Global Health Management Journal) 2, no. 1 (February 28, 2018): 13. http://dx.doi.org/10.35898/ghmj-21191.
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Background: Missing or lost teeth after tooth extraction may lead to tooth decay and infection. Many cases of tooth loss will not be followed with prosthodontics or rehabilitative treatments. Patients might be aware of partial denture, however no concern to replace the missing teeth.Aims: This study was to determine the relationship between the levels of knowledge and interest in using the partial dentures.Methods: This study was an observational analytic survey with cross sectional design, conducted in October - November 2017. The work involved 60 patients who had pulled teeth at Kanina Dental Clinic, Yogyakarta, Indonesia, who had been selected using purposive sampling technique. Levels of knowledge and interest among the participants were assessed by a set of questionnaire. The data obtained was then analysed using Kendall's Tau test.Results: From the study, we found that 35 respondents had good knowledge and high interest to use partial dentures (58.3%), while the other 22 patients (40%) had been noted with less knowledge and poor maintenance. From Kendall's Tau test, we found a significant relationship between the patient's knowledge and partial removal denture maintenance of p value = 0.003. This study also highlights the role of patients’ peer to their decision to use the removable partial dentures.Conclusion: Respondents may consider loosing teeth affected to their physical aesthetics, masticatory system, and speaking comfort. Data shows the higher knowledge to the benefits of partial dentures the higher their interest in using removable partial dentures after tooth extraction.
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Piao, Xing-Yu, Jeongho Jeon, June-Sung Shim, and Ji-Man Park. "A Digital Workflow for the Fabrication of a Milled Removable Partial Denture." International Journal of Environmental Research and Public Health 19, no. 14 (July 13, 2022): 8540. http://dx.doi.org/10.3390/ijerph19148540.
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Complete dentures fabricated with the additive or subtractive method have been widely used and proven to be clinically acceptable. However, fabrication of removable partial dentures (RPDs) using computer-aided design and computer-aided manufacturing is limited by its technique sensitivity as the pink resin, which encases part of metal framework, cannot be fabricated digitally. This article introduces a digital workflow to fabricate an RPD with the subtractive method. A complex structure of the offset metal framework and denture base with teeth sockets was milled with this technique. Artificial teeth were milled with a resin disk according to the computer-aided design data, resulting in the customized occlusal surface. This digital technique can be an alternative to the analog fabrication method as the RPD was fabricated digitally, keeping the original structures and reducing resin shrinkage on the intaglio surface.
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Jubhari, Eri Hendra, and Priscilia Yoviani Sole. "Novel fully digital workflow for removable partial denture fabrication." Makassar Dental Journal 11, no. 1 (April 1, 2022): 95–100. http://dx.doi.org/10.35856/mdj.v11i1.518.
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Background: Digital dentistry technology based on computer-aided design and computer-aided manufacturing (CAD/CAM) has been widely applied in the field of prosthodontics, ranging from digital techniques for impression processes, jaw registration, artificial tooth arrangement and base design, along with base and denture fabrication. However, conventional analog workflows are still used and digital workflows have not completely replaced analog workflows. Purpose: Knowing the latest complete digi-tal workflow in the manufacture of removable partial dentures (RPD). Methods: Full-arch digital impressions of the partially edentulous jaw were made with an intraoral scanner or by conventional methods. The denture framework, artificial teeth, and denture base were designed by commercially available CAD software. Each of the denture components including connectors, clasps, and artificial teeth and the denture bases were fabricated separately by the CAM machine, and then assembled using an adhesive material. Conclusion: RPDs were successfully fabricated using a fully digital workflow and no clinical complications were reported.
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Nasser, Dr Najim O. "The effect of design on Removable Partial Dentures." Mustansiria Dental Journal 11, no. 1 (February 26, 2018): 43–47. http://dx.doi.org/10.32828/mdj.v11i1.212.
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The importance of properly designed removable partial denture cannot beoveremphasized, the execution of removable partial denture design may determine thesuccess or failure of the appliance inadequate design assures its facility.This study was done to confirm the effect of Kennedy classification and clinicalexamination on the removable partial design of group (A) dental technician and group(B) the dentists, and to be solved in future.The result show 36% of the cases were modified and changed according to thecases related variables this high and significant number of munificent reinforces theposition that RPD design should be decided and guided by the dentists.The study conducted the effects of Kennedy classification and clinicalexamination on the RPD design marked by the dentists after providing the clinicalexamination played a very important role in changing the RPD designs.
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Gus’kov, Aleksandr V., Sergey I. Kalinovskiy, Aleksandr A. Oleynikov, and Mariya S. Kozhevnikova. "Modern approaches to rehabilitation of patients using removable laminar dentures." NAUKA MOLODYKH (Eruditio Juvenium) 9, no. 4 (December 31, 2021): 631–46. http://dx.doi.org/10.23888/hmj202194631-646.
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The demand for dental orthopedic assistance in Russia makes more than 60% of the number of examined patients. With this, a share of use of removable dentures for rehabilitation of patients with partial or complete absence of teeth makes 40.2% of all types of prosthetics. Removable prosthetics remains an actual treatment option for patients with partial or complete absence of dentitions, along with use of non-removable structures including those with support on dental implants. Improvement of approaches to manufacture and design of dentures led to a considerable increase in the variants of combinations of materials and methods of their manufacture, and there appeared a possibility to optimize denture structures due to the ability to compensate for atrophic processes of the bone tissue. All this permits an orthopedist to achieve satisfactory results in treatment with use of removable dentures. In the given literature review, modern views on the variants of orthopedic rehabilitation of patients with use of removable laminar dentures are presented including their technological, functional, operational, phonetic, chewing peculiarities, and information on modern materials for manufacture of dentures is given. Based on the literature data, it can be concluded that despite active development of the technological component of the manufacture of removable dentures, the basic principles of their design, methods of evaluation of the effectiveness and comfort of use have not undergone significant changes. However, there are a significant number of factors whose influence on the success of orthopedic rehabilitation with removable dentures has not been fully studied. For example, orthopedic dentists often do not analyze the volume of atrophy of the bone tissue of the jaws and design the basis of a dental prosthesis without taking these parameters into account. Another important issue that remains not considered is taking into account the design and architectonics of the resulting prosthesis and its effect on the speed and direction of respiratory flows in the oral cavity. All this creates a technological window that allows, due to compliance with the physiological requirements of the factors described above, to significantly increase the functional properties of the denture, to facilitate the patients habituation to the prosthesis by reducing the adaptation period. The research conducted in this area of knowledge will permit to obtain both new scientific data and develop a number of practical recommendations aimed at improvement of the quality of orthopedic rehabilitation using removable dentures made of various materials.
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Minagi, Shogo, Nobukuni Natsuaki, Goro Nishigawa, and Takashi Sato. "New telescopic crown design for removable partial dentures." Journal of Prosthetic Dentistry 81, no. 6 (June 1999): 684–88. http://dx.doi.org/10.1016/s0022-3913(99)70107-1.
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Messias, Ana, Maria A. Neto, Ana M. Amaro, Vítor M. Lopes, and Pedro Nicolau. "Mechanical Evaluation of Implant-Assisted Removable Partial Dentures in Kennedy Class I Patients: Finite Element Design Considerations." Applied Sciences 11, no. 2 (January 12, 2021): 659. http://dx.doi.org/10.3390/app11020659.
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The main purpose of this work was to construct a clinically valid numerical model of a mandibular Kennedy class I patient rehabilitated with a conventional removable partial denture and another two with implant-assisted removable partial dentures at two different implant locations. The selected patient was classified as ASA I and its mandible geometry reconstruction was performed by the conversion of the Cone-Beam computed Tomography (CBCT) scan raw medical data into a 3D model and subsequent conversion to a CAD file by reverse engineering methods. The soft tissue and removable denture geometries were also included in the CAD model as well as implants, ball attachments and matrix. Moreover, periodontal ligament was modelled by offsetting the mesh of the root surface of each tooth. The finite element results showed that the installation of a dental implant in each of the bilateral edentulous regions helps providing support and retention to the extension bases of the Removable Partial Denture (RPD) and significantly reduces the vertical and anterior-posterior displacements, regardless of its position.
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Dragomir, Georgiana, Alexandru Titus Farcasiu, and Iulia Pascal. "Romanian dentists’ perception of flexible removable partial dentures." Romanian Journal of Stomatology 67, no. 1 (March 31, 2021): 53–56. http://dx.doi.org/10.37897/rjs.2021.1.9.
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Introduction. A flexible partial denture, as a treatment solution for partial edentulousness, is a current alternative in dental prosthetics, due to simplified design, aesthetic and biomechanical qualities of resin materials, that contribute to the favourable distribution of masticatory forces on the dental and mucosal support. Objective. This study aims to highlight the medical perception of Romanian dentists regarding the evolution of patients treated with flexible partial dentures. Material and method. The research was carried out over a period of two years (2017-2019), on a study group composed of 84 Romanian dentists. Subjects were asked to answer an anonymous questionnaire consisting of 14 closed questions, to outline frequently aspects encountered in practice related to the clinical evolution of the patient rehabilitated with flexible partial removable dentures. Outcomes. Patient comfort (76%) and higher aesthetic properties (54%) were the main reasons why dentists chose a partially flexible prosthetic for the prosthetic treatment of the patient. In the evolution of prosthetic patient, the main problems found at the partial flexible prosthesis were food pigment impregnation of the base (51%) and limited possibilities of repair (34%). Changes in maintenance, support, stability, aesthetic or possible fractures of base and clasps were seen by 46% of respondents, at approximately 1 to 2 years after the application of flexible partial dentures. Conclusions. Flexible partial prosthesis is a method of treatment, whose main advantages are represented by esthetics and superior adaptation of the patients, but because of the deficiencies that occur over time, it is better to be recommended as a provisional treatment solution.
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Batalha, A. E. F., and R. M. Araújo. "Development of removable partial dentures by using additive manufacture and casting processes." Archives of Materials Science and Engineering 1, no. 87 (September 1, 2017): 33–40. http://dx.doi.org/10.5604/01.3001.0010.5969.
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Purpose: This work aims to present a methodology developed for dimensional analysis of removable partial dentures, following a route with a model manufactured by additive manufacture and a further casting process of a Co-Cr alloy part. Design/methodology/approach: The method for designing and manufacturing removable partial dentures (RPD) is focused on their completely virtual design. They are manufactured with resin additive manufacturing chrome-cobalt cast alloys. A 3D image correlation scanner was used for dimensional and geometrical tolerance analysis. Findings: The prostheses manufactured by CAD-CAM route are more accurate than conventional ones, but they suffer distortion during the casting process. This distortion did not interfere with the patient's well-being or with the adaptation to the prosthesis. Research limitations/implications: The technique presented herein paper allows preparing better fitting prosthesis. Providing the best comfort and masticatory power. Practical implications: Improving the precision in the manufacturing process of a removable partial denture is very important for professional dentists and their patients. Originality/value: The proposed technique and the work approach provide the prosthesis preparation with shorter ambulatory time in addition to greater comfort to the patient.
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Bilgin, Mehmet Selim, Ebru Nur Baytaroğlu, Ali Erdem, and Erhan Dilber. "A review of computer-aided design/computer-aided manufacture techniques for removable denture fabrication." European Journal of Dentistry 10, no. 02 (April 2016): 286–91. http://dx.doi.org/10.4103/1305-7456.178304.
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ABSTRACTThe aim of this review was to investigate usage of computer-aided design/computer-aided manufacture (CAD/CAM) such as milling and rapid prototyping (RP) technologies for removable denture fabrication. An electronic search was conducted in the PubMed/MEDLINE, ScienceDirect, Google Scholar, and Web of Science databases. Databases were searched from 1987 to 2014. The search was performed using a variety of keywords including CAD/CAM, complete/partial dentures, RP, rapid manufacturing, digitally designed, milled, computerized, and machined. The identified developments (in chronological order), techniques, advantages, and disadvantages of CAD/CAM and RP for removable denture fabrication are summarized. Using a variety of keywords and aiming to find the topic, 78 publications were initially searched. For the main topic, the abstract of these 78 articles were scanned, and 52 publications were selected for reading in detail. Full-text of these articles was gained and searched in detail. Totally, 40 articles that discussed the techniques, advantages, and disadvantages of CAD/CAM and RP for removable denture fabrication and the articles were incorporated in this review. Totally, 16 of the papers summarized in the table. Following review of all relevant publications, it can be concluded that current innovations and technological developments of CAD/CAM and RP allow the digitally planning and manufacturing of removable dentures from start to finish. As a result according to the literature review CAD/CAM techniques and supportive maxillomandibular relationship transfer devices are growing fast. In the close future, fabricating removable dentures will become medical informatics instead of needing a technical staff and procedures. However the methods have several limitations for now.
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Wahjuni, Sri, and Sefy Ayu Mandanie. "Fabrication of Combined Prosthesis With Castable Extracoronal Attachments (Laboratory Procedure)." Journal Of Vocational Health Studies 1, no. 2 (November 14, 2017): 75. http://dx.doi.org/10.20473/jvhs.v1.i2.2017.75-81.
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Background : Nows a days has developed many kind of dentures to improve the functionality, comfort aesthetics. Stability, retention and its aesthetic can be improved by attachments. With many kind design assortment of dentures so need a different technique with the existing design. Purpose : The aim of this study is to know the danture manufacturing process in combination with Castable protesa Extracoronal Attachments labolatory procedure. Review: Fixed dentures are each bonded teeth protesa, inserted mechanically and support by teeth or dental implant abutment or that provide the main support for the dental protesa. A partial denture is a spin-off protesa that replaces one or more missing teeth, on the maxillary or mandibullary and can be opened by patients without the supervision of a dentist. Extracoronal attachment is an attachment that is part of the male and female part are almost entirely outside the contours of the Crown of the tooth. Conclusion: the initial stages are making of coping use wax pattern and inserted the female, the casting of metal, porcelain applications, making the wax pattern of the metal frame work, the casting of metal, inserted male, making a removable dentures.
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Mariska Juanita and Eri Hendra Jubhari. "Designing metal framework partial denture." Makassar Dental Journal 10, no. 2 (August 1, 2021): 135–41. http://dx.doi.org/10.35856/mdj.v10i2.423.
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The number of partiallyedentulous adults is increasing, and many patients will require replacement of missing teeth. Although current treatment options also include fixed partial dentures and implants, removable partial dentures (RPDs) can have advant-ages and are widely used in clinical practice. However, a significant need exists to advance materials and fabrication technologies because of the unwanted health consequences associated with current RPDs. The RPDs consists of many components, such as major and minor connector, direct and indirect retainer, also rests. The variety of anatomic considerations related to oral con-ditions may affect selection of these components. The objective of this review is to discuss data related to RPDs design and factors affecting its selection. It was concluded that prosthodontists need to fully understand the basic of RPDs design princi-ples and should be familiar with those structures.
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Liu, Dong Lei, Hua Yan, Zong Bao Shen, Xin Hua Song, and Xiao Wang. "Modeling and Simulation of Implant-Supported Fixed Partial Dentures Prosthodontic." Applied Mechanics and Materials 16-19 (October 2009): 1112–16. http://dx.doi.org/10.4028/www.scientific.net/amm.16-19.1112.
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The theoretical models and finite element models of implant-supported fixed partial dentures and surrounding osseous tissues were founded. It was studied of the influence of connector sectional area on implant-supported fixed partial dentures and surrounding osseous tissues. The results indicate that increasing the connector sectional areas to some extent has positive effect on fixed bridge itself. But the maximum stresses in some regions of surrounding osseous tissues increase as the connector sectional areas increase, the change extent is smaller comparatively. The study provides biomechanics evidence for the optimum design of implant-supported fixed partial dentures.
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Canpolat, Ceyhun, Burcu Bal, Zeynep Özkurt Kayahan, and Ender Kazazoğlu. "Planning differences and design errors for removable partial dentures." Yeditepe Dental Journal 14, no. 2 (2018): 57–60. http://dx.doi.org/10.5505/yeditepe.2018.84756.
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Andrei, Oana Cella, Ioana Tarlungeanu, Livia Alice Tanasescu, Adriana Bisoc, Mihai Burlibasa, Catalina Farcasiu, Magdalena Natalia Dina, Adina Magdalena Bunget, and Ruxandra Margarit. "Deformation Resistance of Palatal Plate Connectors in Removable Partial Dentures." Materiale Plastice 57, no. 1 (April 17, 2020): 202–8. http://dx.doi.org/10.37358/mp.20.1.5328.
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The aim of our study was to evaluate the deformation resistance of two palatal plate type connectors of removable partial dentures and to make a comparison between the reduced palatal plates and the large ones, in terms of bending resistance during function. We tested 10 maxillary class I Kennedy removable partial dentures made for real clinical cases and duplicated their connectors, 5 of each type. A Universal Loading Machine was used to apply a bilateral progressive force to the PM2-M1 area until the samples bended, recording the force value at which the first change occurred. The results were analyzed using the ANOVA method. For the reduced palatal plate group, the minimum bending force value was 1584 N, the maximum bending force value being 2920 N. For the large palatal plate group, the minimum bending force value was 3150 N, the maximum value being 3380 N. Statistical analysis of data using the ANOVA method shows that the results are statistically relevant, with a p value of 0,001031 (p[0,05). The results showed that decreasing the width of the palatal plate can have a significant effect on the deformation resistance of the major connector and can affect its rigidity; in clinical practice, these results can help dentists to use alternative appropriate design methods of increasing the rigidity of reduced palatal plates, in order to protect both the remaining structures and the acrylic components of the dentures during the years of its functioning. Keywords: palatal plate, removable partial denture, deformation resistance
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M, Satrio Krestiono, and Harry Laksono. "Telescopic Overdenture as An Aesthetic Treatment for Partially Dentate Patients – A case report." Indonesian Journal of Dental Medicine 1, no. 1 (March 31, 2018): 27. http://dx.doi.org/10.20473/ijdm.v1i1.2018.27-30.
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Background: Metal frame denture design is common used for partially dentate patient, one of the problem was a metal appearance from wrought wire or a metal casting clasp as retainer, which is not really aesthetic. Telescopic overdenture with its double crown will be the best solution for those cases. Purpose: The purpose of this case report was to reported telescopic overdenture design and fabrication where the aesthetic was the main consideration. Case: Sixty years old female patient, a businesswoman, came to Dental Hospital of Universitas Airlangga, complained about her upper partially dentate and 6 years lower fixed partial denture, which is not comfortable to wear and her upper anterior teeth doesn’t look quite good. She wanted to make crowns and removable denture. Case management: After the diagnosis were made, the pretreatment plan were remove crown for the upper jaw, remove the bridges on lower jaw, and transitional dentures were made to maintain the VDO. The crowns and veneer were fabricated and inserted while the inner copings were tried up on prepared teeth. After the the dentures were produced, the inner copings were luted to the abutment teeth, and then the dentures were inserted using FGP (Friction GriP) cement for the friction effect. Discussion: Telescopic overdenture is consists of a double crown system known as “the telescopic”, the procedure involves fitting the remaining natural teeth with inner metal crowns, followed by outer crowns as part of an over denture that can be removed by the patient. Conclusion: This technique ensures that telescopic overdentures give natural aesthetic result.
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Wirayudha, Agam, Michael Josef Kridanto Kamadjaja, and Bambang Agustono. "Increasing Denture Retention using Compound Denture Technique – A Case Report." Indonesian Journal of Dental Medicine 1, no. 2 (June 30, 2018): 90. http://dx.doi.org/10.20473/ijdm.v1i2.2018.90-92.
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Background: Treating missing tooth with denture, in some cases, still leave the patient unfulfilled. Good mastication and retention are the main considerations especially for those who require more retentions. In some cases, combination of partial and fixed denture the best approach to achieve better functional and retention results. Purpose: To report compound denture procedures with good mastication and retention as the main considerations. Case: A 43-year-old male patient reported a complaint of chewing difficulty due to missing right upper front teeth caused by work accident and extracted posterior. Patient wanted to wear partial denture to regain good mastication. Case management: Compound denture was chosen to optimize the remaining teeth for better functional and aesthetic. Zirconia all ceramic fixed dentures were fabricated on 13, 14, 15 with an occlusal rest on 13 and 15. Pontic on the 14 used ridge lap design. Discussion: Compound denture is a combination of removable and fixed denture where a minor connector of a removable denture should involve a fixed denture. Fixed denture shall be fabricated first and then removable denture. Conclusion: The definitive restoration of this case was compound denture, which is a combination of partial denture metal frame and fixed denture to restore the good mastication and retention.
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Sharma, Prabal, and Bhumika Sharma. "Unconventional Dentures: A Manifestation of New Vision in Prosthesis Construction." Journal of Advanced Oral Research 11, no. 1 (May 2020): 101–8. http://dx.doi.org/10.1177/2320206820918738.
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Removable prosthesis, that is, complete and/or partial dentures cannot function as a substitute for natural dentition, but they have been and will remain the staple treatment for edentulous patients. An edentulous patient is found to be satisfied if prosthodontic rehabilitation restores his/her function with superior esthetics. However, not every case of edentulism, either complete or partial, can be treated with conventional methods of denture fabrication. When a patient is clinically presented with complications such as severely resorbed ridge, microstomia, hyperplastic and/or flabby tissue, xerostomia, osteoma, bruxism, and labially inclined premaxilla, then it becomes difficult for the dentist to fulfill the patient’s desire for both esthetics and function. There is a need for slight modification in the regular clinical procedures by altering the impression technique or the design of the prosthesis so as to achieve best results in compromised cases, commonly known as unconventional approaches. This article intends to highlight the unconventional approaches for the fabrication of complete denture prosthesis that can be kept in mind when such cases are encountered in our daily practice.
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Melisa. "Comparison of design of removable partial denture with conventional technique and computer-aided system." Makassar Dental Journal 11, no. 1 (April 1, 2022): 1–5. http://dx.doi.org/10.35856/mdj.v11i1.496.
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In the last few decades, digital dentistry based on computer-aided design and computer-aided manufacturing (CAD/CAM) has been increasingly discussed. The use of CAD/CAM for the manufacture of fixed dentures shows a high success rate. Currently, CAD/CAM for the manufacture of removable partial dentures (RPD) has also been used in several studies. Several studies have been conducted to determine the level of accuracy and suitability of the manufacture of RPD made conventionally and CAD/ CAM systems, but there are still differences in results. Therefore, in this literature review, it will be discussed the comparison of the accuracy and suitability of conventionally made RPD and CAD/CAM systems.
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Yankova, Mariana, Todor Peev, Bozhidar Yordanov, Mariana Dimova-Gabrovska, and Rangel Todorov. "APPLICATION OF RESILIENT DENTURE LINING MATERIALS: LITERATURE REVIEW." Journal of IMAB - Annual Proceeding (Scientific Papers) 27, no. 2 (April 2, 2021): 3676–81. http://dx.doi.org/10.5272/jimab.2021272.3676.
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Clinical cases of excessive bone resorption, presented thin, non-pliable mucosa, exostosis or painful neurogenic points require more specific methods for treatment with removable dentures. Specialized scientific literature discusses various materials and technologies for solving these problems. The use of resilient lining materials (RLMs) for partial and complete dentures is a possible solution if there are clear clinical indications and appropriate selection of the type of material. The purpose of this review is to provide and analyze up-to-date literature data on the use of resilient materials for partial and complete denture lining. Material and Methods: An electronic search in PubMed, Google, EBSCOhost and Science Direct databases was conducted from January to December 2019. Results: Resilient lining materials have a variety of applications. They can be used in complete and all types of partial edentation, i.e. Classes I, II, IV and VI by Kennedy - Popov. The indications for use are different for the two RLMs groups, i.e. temporary (short-term) and permanent (long-term) lining materials. A number of authors have identified them as materials for the limited application. They consider that their use is justified only in the case of the severely atrophied alveolar ridge, in obturators and epitheses. Conclusion: Resilient lining needs to be considered and planned in advance. It should not be used to compensate for errors in denture design. Appropriate selection of a material for the particular clinical case is of crucial importance.
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Afzal, Hadiqa, Naseer Ahmed, Abhishek Lal, Khulud A. Al-Aali, Mohammed Alrabiah, Mai M. Alhamdan, Ahmed Albahaqi, Abdulaziz Sharaf, Fahim Vohra, and Tariq Abduljabbar. "Assessment of Communication Quality through Work Authorization between Dentists and Dental Technicians in Fixed and Removable Prosthodontics." Applied Sciences 12, no. 12 (June 20, 2022): 6263. http://dx.doi.org/10.3390/app12126263.
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Fabrication of a clinically successful dental prosthesis requires clear and effective communication between dentists and dental technicians. Adequate completion of work authorization by dentists provides a means for increased professional quality assurance and satisfaction in dental prosthesis. The aim of this study was to evaluate the quality of communication between dentists and dental technicians via work authorization for fixed and removable dental prosthesis in Pakistan. This cross-sectional study was conducted for a period of 6 months to assess the quality of communication between dentists and dental technicians. A well-constructed questionnaire regarding work authorization of removable and fixed prostheses was used as a tool to collect data from 453 dentists. A linear regression analysis was performed to evaluate the relationship of the independent and dependent variables. A p value of ≤0.05 was considered statistically significant. It was observed that 92.1% of the dentists leave removable partial denture design to the dental technicians. About 56.5% of the dentists indicated information about base retention of partial dentures in work authorization. The majority of the dentists (56.5%) mentioned the material to be used for the construction of casting partial dentures. Nearly 66% of the dentists indicated the design of margins, and 44.6% of the dentists did not select the shade for fixed prostheses. Nearly 43% of the dentists did not draw the design of restoration, 21.9% chose to draw the design on paper, and 32.2% of the dentists drew the design on the cast. Meanwhile, 76.8% of the participants chose to directly communicate with their dental technicians personally. Nearly 41% of the dentists were satisfied with the restoration design, and 13.5% of the participants were not satisfied with the designs. Poor communication between dentists and technicians was observed, as the majority of the design decisions were left to the dental technicians. Therefore, communication between dentists and dental technicians should be improved by conducting combined workshops for the successful construction of dental prostheses.
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Park, Si-Myung, Soyeon Park, Hyein Chio, Laehyun Kim, Soo Hong Lee, and Gunwoo Noh. "Design of a Mandibular Advancement Device for Patients with Partial Dentures." Transactions of the Korean Society of Mechanical Engineers - A 42, no. 6 (June 30, 2018): 591–98. http://dx.doi.org/10.3795/ksme-a.2018.42.6.591.
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Ben-Ur, Z., I. Aviv, and H. S. Cardash. "A modified direct retainer design for distal-extension removable partial dentures." Journal of Prosthetic Dentistry 60, no. 3 (September 1988): 342–44. http://dx.doi.org/10.1016/0022-3913(88)90280-6.
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Burgess, John O., and James G. McCartney. "Anterior retainer design for resin-bonded acid-etched fixed partial dentures." Journal of Prosthetic Dentistry 61, no. 4 (April 1989): 433–36. http://dx.doi.org/10.1016/0022-3913(89)90009-7.
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Almasi, Adrian, Iulian Antoniac, Sergiu Focsaneanu, Marius Manole, Robert Ciocoiu, Octavian Trante, Kamel Earar, Adriana Saceleanu, Anca Porumb, and Cristian Ratiu. "Design Improvement of Y-TZP Three Unit Bridges by Predicted Stress Concentration Using FEA and Experimental Failure Modes after Three Point Bending Test." Revista de Chimie 70, no. 1 (February 15, 2019): 336–42. http://dx.doi.org/10.37358/rc.19.1.6912.
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In this study an attempt to improve a three unit partial denture design is presented by performing experimental trials to find the failure load of a Y-TZP dental infrastructure. The experimental results are linked with FEA predictions to explain failure and find the optimum design. The test samples used were three unit fixed partial dentures obtained by CAD/CAM using as starting point a clinical case. Design improvement attempt was to increase connector cross-section size and modify its shape. Four samples with circular and elliptical connector cross-sections and 5mm2 and 9mm2 area were tested in flexure. The models created for CAM were used to perform FEA and find the stress distribution, pinpoint the stress concentrators and link the results to experimental failure modes. The results showed that connector design plays an important role in restoration success and increasing connector cross-section area the stress is distributed in a uniform manner. It was concluded that increasing connector cross-section area and using a wider shape (ellipse) strongly decreases failure probability.
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Tkachenko, I. M., S. A. German, E. O. Berezhna, K. U. Andrienko, and A. O. Izotova. "JUSTIFICATION OF THE DESIGN OF THE DENTURE WITH CLASPLESS FIXATION AT THE MESIO-DISTAL INCLINATION OF THE TEETH." Ukrainian Dental Almanac, no. 2 (June 19, 2019): 55–58. http://dx.doi.org/10.31718/2409-0255.2.2019.11.
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The aim of the study was to improve the effectiveness of orthopedic treatment for patients with dentition defects by method of making a removable denture with claspless fixation, taking into account the mathematical modelling of the teeth and undercut inclination.
The technique of making claspless partial dentures by using A-silicone material is based on the idea of using the elastic forces generated in the wedge-shaped body of elastic material under the influence of an external force, which resets the prosthesis. Based on the considerations, it was developed a scheme of the claspless denture model and the mathematical modeling of partial removable laminar dentures fixation with elastic material, resulting in the special formula.
After analyzing the results, we suggest to use in the clinic simplified table. With their help, you can easily determine the rationality of claspless denture, which is planned to produce on the technology that we offer. For this, you need to determine the ratio of the magnitude undercut and height of the inclined teeth and to compare them with the data tables.
The most efficient should be considered claspless design of the prosthesis, if both of the inclined abutments have a ratio of the magnitude of undercut and height not less than the value of the ratio when the value F/2=0.3 kg U= 1 mm. In this case, it can be argued that claspless prosthesis under the influence of dropping efforts 0,3 kg will move in the vertical direction not more than 0.5 mm, and under the influence dropping efforts to 0.6 kg not more than 1 mm. But, if one or both of the sloping supporting the tooth have the ratio of the magnitude undercut and a height of about one (an angle of about 45°), then there will be difficulties with the insertion of claspless denture on the prosthetic bed.
Thus, the fixation and stabilization of the claspless denture will be carried out using wedge-shaped body of elastic material, the amount of which is calculated individually depending on the above parameters and fills the area between the denture and supporting teeth of the patient.
The optimal ratio of undercut and height of the inclined teeth is discussed. When the mesio-distal tilt angle is more than 45°, there are difficulties with the insertion of the prosthesis, and when tilted less than 15° it can have problems with fixing.
Allowed the thickness of the silicone compound is from 0.1 to 2.4 mm When the thickness of the layer of material above 3.0 mm are possible complications in the form of breaking on period of exploitation.
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M, Jayashree, Subhashini S, Parithimar K, Syed E, and Sunantha S. "Full Mouth Rehabilitation With Mandibular Precision Attachment And Cast Partial Denture & Conventional Maxillary Denture-A Case Report." JOURNAL OF CLINICAL PROSTHODONTICS AND IMPLANTOLOGY 1, no. 1 (June 30, 2019): 15–18. http://dx.doi.org/10.55995/j-cpi.2019004.
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A prosthesis should fulfill the needs of the patient and also meet the biological, mechanical, and esthetic considerations.Among the various methods of oral rehabilitation, precision attachments are viable alternative to connect fixed (FDP) and cast partial dentures (CPD).Precision attachment partial dentures have been used successfully on natural tooth abutments.The advantages of attachment retained CPD are improvements in appearance by virtue of its design without a clasp assembly and renders improved biomechanics.There are significant number of patients who could benefit from this treatment option. The proposed article is a case report which is intended to provide an overview of a simplified approach to this treatment modality.
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Memon, Farzana, Diya Ram Khatri, and Salwa Memon. "PROSTHODONTIC TREATMENT." Professional Medical Journal 25, no. 07 (July 10, 2018): 1034–40. http://dx.doi.org/10.29309/tpmj/2018.25.07.121.
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Objectives: This study was carried out to assess the clinical evaluation of thepreference for prosthodontics treatment modalities in the patients visiting at the Welfare OPD,Isra Dental College, Hyderabad. Study Design: Cross sectional study. Setting: Welfare OPD,Department of Prosthodontics at Isra Dental College, Hyderabad. Period: Six months, from Jan,2016 to June, 2016. Materials and Methods: The study comprised of 191 patients belongingto both genders ranging in age from 10 years to the 60+ years, divided into six groups. Dataanalysis by distribution was performed according to the various kinds of prosthesis, includingremovable partial denture, removable complete denture, fixed partial denture, repair of RPD,immediate denture, lower CD & upper PD, obturator, upper CD & lower PD, relining of dentures,splints, over denture and provisional restorations. Data was analyzed via SPSS version 21.Descriptive statistics such as percentage, frequency distribution, cross tabulation and descriptivewere included in Data analysis. The level of significance was set at <0.05%. Results: This studyrevealed that the most of the patients were fell in group IV (41-50 years), which represents28.3% and the most common treatment were given RPD restoration (49.2%), followed by FPD(22.5%). Majority of the patients were prefer the RPD as 32 (34.0%) and 27 (28.7%) from the agegroup IV and III respectively while 13 (13.8%) patients were prefer RPD and 13 (30.8%) patientswere prefer FPD from the age group II. Out of 191 patients, 47 (50.0%) Males and 47 (50.0%)Females as well prefer the RPD while 26 (60.5%) females and 17 (39.5%) males were preferFPD as treatment modalities. Younger female patients preferred the FPD while with the increaseof age both genders prefer removable prosthesis. Conclusion: This study concludes that inthe treatment modalities, mostly patients preferred the removable partial denture, provisionalrestorations and removable complete denture. Younger patients preferred fixed partial dentureand removable partial denture as well.
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Samia Shafiq and Nazia Yazdanie. "Effects of acrylic removable partial dentures on periodontal health of abutment teeth." Professional Medical Journal 29, no. 03 (February 28, 2022): 382–88. http://dx.doi.org/10.29309/tpmj/2022.29.03.6109.
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Objective: To assess the outcomes in patients wearing particularly designed acrylic removable partial dentures at different time intervals. Study Design: Descriptive Case Series Study. Setting: Department of Prosthodontics, FMH College of Dentistry, Lahore. Period: October 2017 to April, 2018. Material & Methods: Sixty five (65) abutments of acrylic removable partial denture wearers were included in the study for assessment of Mean Clinical Attachment Level (CAL), Tooth Mobility (TM) and Mean Gingival Index (GI). These periodontal parameters were clinically assessed at the day of insertion, 30th day and 60th day of insertion. Mean Clinical Attachment Level (CAL) was measured by William’s Probe. Tooth Mobility (TM) was assessed using Miller’s Classification. Gingival health was evaluated using the Gingival Index (GI) of Loe and Silness. Mean and standard deviation were calculated for patient’s age and all the periodontal scores of abutment teeth. Data was stratified for age and gender to identify the effect modifiers. Pearson chi-square test was used for Mean Gingival Index, and Mean Tooth Mobility. Post-stratification student t-test for Mean Clinical Attachment Level was used to compare the results with p ≤ 0.05 considered as significant. Results: Sstatistically insignificant results for all the periodontal parameters, i.e. the Mean Gingival Index (GI), Tooth Mobility (TM) and Mean Clinical Attachment Loss (CAL) were observed, age being not influencing the periodontal health of abutments. The only statistically significant (p= 0.01) result was observed for the Tooth Mobility (TM) in gender categories at the day of insertion and the 30th day of insertion. Conclusion: All the periodontal parameters, except tooth mobility (TM) assessed in the study, were not affected by the acrylic removable partial denture wearing.
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Maleknejad, Fatemeh, Marjaneh Ghavamnasiri, and Maryam Modabber. "Porcelain Fused to Metal Crown as an Abutment of a Metal-Ceramic Resin-Bonded Fixed Partial Denture: A Clinical Report." Journal of Contemporary Dental Practice 11, no. 2 (2010): 64–70. http://dx.doi.org/10.5005/jcdp-11-2-64.
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Abstract Aim This clinical report describes a conventional resin-based fixed partial denture for a 42-yearold woman to close an edentulous space in the region of the second maxillary premolar. While the first maxillary molar had been crowned with porcelain fused to metal (PFM) system 10 years ago and the first premolar was intact and sound except for a small carious lesion in the distal aspect. The essential clinical and laboratory procedures are illustrated. Background Multiple clinical studies document excellent long-term success of resin-bonded fixed partial dentures. In the 1970s, the Rochette resin-bonded fixed partial denture (RBFPD) was introduced. Next, to enhance retention and resistance form of posterior RBFPD preparation of parallel guide surfaces on the interproximal aspects of the adjacent teeth along with rests on the occlusal aspects to counteract dislodging forces was recommended. Report A 42-year-old woman presented with an extracted left maxillary second premolar. The first maxillary molar had been crowned 10 years ago and the first premolar had a small carious lesion in the mid distal of proximal aspect. To eliminate unnecessary cutting of the PFM of the first molar and crown preparation of the first maxillary premolar, the use of RBFPD was suggested and accepted by the patient. Summary This clinical report described the indication, the selection of a PFM-crowned abutment, and clinical procedures involved in the fabrication of RBFPD that provided a conservative solution for replacement of one posterior tooth. Clinical Significance RBFPDs can be used successfully in both the anterior and the posterior regions of the mouth to replace one or two missing teeth. However, the survival rate of RBFPDs is still considerably less than that of conventional fixed partial dentures. The principal reason for failure is debonding of the framework from the abutment tooth. The selection of nonmobile abutment teeth, the preparation design that enhances retention and resistance form, and the tooth bonding technique are critical for success. Citation Ghavamnasiri M, Maleknejad F, Modabber M. Porcelain Fused to Metal Crown as an Abutment of a Metal-Ceramic Resin- Bonded Fixed Partial Denture: A Clinical Report. J Contemp Dent Pract [Internet]. 2010 March; 11(2):064-070. Available from: http://www.thejcdp. com/journal/view/volume11-issue2-ghavamnasiri.
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Ali, Suliman M., Zenna N. Namat, and Azhar Ahmed. "The Effect of Clinical Examination and Kennedy Classification on the Design of Removable Partial Dentures." Al Mustansiriyah Journal of Pharmaceutical Sciences 11, no. 1 (June 1, 2012): 53–59. http://dx.doi.org/10.32947/ajps.v11i1.238.
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The success of Removable Partial Dentures (RPD) depends greatly on it's design, (which means acrylic, Cobalt- Chromium [co-ch], and fixed).But unfortunately many dentists delegate their responsibility of RPDS design to the dental technician for one reason or another, this study was done to confirm the effect of kennedy classification and clinical examination on the RPD design, and to identify the changes between design of group (A) dental technician and group (B) the dentists, and to be solved in future.
The result show 36% of the cases were modified and changed according to the cases related variables this high and significant number of modification reinforces the position that RPD design should be decided and guided by the dentists. The study conducted the effects of kennedy classification and clinical examination on the RPD design by comparing between designs group of Dental technician without clinical examination and designs marked by the dentists after providing the clinical examination, the change of design was clearly proved that the clinical examination played a very important role in changing the RPD designs.
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Oh, W., N. Götzen, and K. J. Anusavice. "Influence of Connector Design on Fracture Probability of Ceramic Fixed-partial Dentures." Journal of Dental Research 81, no. 9 (September 2002): 623–27. http://dx.doi.org/10.1177/154405910208100909.
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Shahmiri, Reza, and Raj Das. "Finite element analysis of implant-assisted removable partial dentures: Framework design considerations." Journal of Prosthetic Dentistry 118, no. 2 (August 2017): 177–86. http://dx.doi.org/10.1016/j.prosdent.2016.10.032.
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HAMMOND, P., J. C. DAVENPORT, and A. J. C. POTTS. "Knowledge-based design of removable partial dentures using direct manipulation and critiquing." Journal of Oral Rehabilitation 20, no. 2 (March 1993): 115–23. http://dx.doi.org/10.1111/j.1365-2842.1993.tb01595.x.
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Rosentritt, Martin, Michael Behr, Carola Kolbeck, and Gerhard Handel. "Marginal Integrity of CAD/CAM Fixed Partial Dentures." European Journal of Dentistry 01, no. 01 (January 2007): 025–30. http://dx.doi.org/10.1055/s-0039-1698308.
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ABSTRACTObjectives: Computer-aided design (CAD) and manufacturing (CAM) allows the milling of high strength zirconia fixed partial dentures (FPD), however bonding to an inert ZrO2 ceramic surface may effect the marginal integrity of the FPDs. The aim of this investigation was to evaluate the marginal adaptation of zirconia FPDs at the interfaces between zirconia, cement, and tooth.Methods: Methods: 32 3-unit FPDs were fabricated of the CAD/CAM Y-TZP zirconia (Lava, 3M Espe, Germany) according to the manufacturers’ instructions. Resin cements with corresponding primer and bonding systems were used to lute the FPDs: Compolute/EBS multi (3M Espe, Germany), Panavia F/ED (Kuraray, Japan), Variolink 2/Syntac classic (Ivoclar-Vivadent, FL) and RelyX Unicem/without treatment (3M Espe, Germany). Au-alloy FPDs (BioPontostar, Bego, Germany) were cemented with RelyX Unicem and Harvard (Harvard, Germany) as the control. Marginal adaptation was evaluated with scanning electron microscopy using replica specimen before and after artificial aging. After aging, microleakage tests were performed with fuchsine solution. The interfaces between cement-tooth and cement-FPD were examined.Results: At the interfaces (cement-tooth and cement-FPD), the systems showed a 95% or higher perfect margin before and after aging. Only Variolink2/Syntac had a marginal adaptation, lower than a 70% perfect margin. Generally, the fuchsine penetration was below 20%, only BioPontstar/Harvard and Lava/Variolink2 showed penetration results between 80% and 100%.Conclusion: The success of the adhesive cementation of zirconia FPDs depends on the cement system. Under the conditions of this study, zirconia FPDs showed good to sufficient marginal integrity in combination with Panavia/ED, Compolute/EBS and RelyX Unicem. (Eur J Dent 2007;1:25-30)
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Dzhendov, Dzh, Iv Katreva, and Ts Ts. Dikova. "Development of treatment protocol with selective laser melted fixed partial dentures." Archives of Materials Science and Engineering 2, no. 90 (April 1, 2018): 68–73. http://dx.doi.org/10.5604/01.3001.0012.0664.
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Purpose: of the present paper is to offer treatment protocol with fixed partial dentures, produced by selective laser melting, including clinical and laboratory parts. Design/methodology/approach: The treatment protocols with selective laser melted fixed partial dentures was developed on the basis of literature survey and our previous research about accuracy and mechanical properties of dental bridges, manufactured by additive technologies. Findings: The treatment protocol with fixed partial dentures, produced by selective laser melting, consisting of clinical and laboratory parts, was developed. The treatment procedures with FPD made by SLM were classified as semi-digital when working with extraoral scanner and fully-digital – with intraoral scanner. Research limitations/implications: The introduction of the proposed treatment protocol into the clinical and laboratory practice would lead to a systematic approach and working optimization for prosthodontists and dental technicians when using selective laser melting. Practical implications: Due to the elimination of multiple manual manipulations and technological operations, treatment protocols with FPD, produced by SLM, ensure higher accuracy and quality of the constructions and shorter time for their manufacturing compared to the conventional procedure. Originality/value: The developed clinical and laboratory protocols for the treatment and manufacturing of FPD through SLM clearly show the benefits of the new technology in dentistry and dental technician field.
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Беленова, Ирина Александровна, Николай Валерьевич Морозов, Юлия Николаевна Комарова, and Мария Алексеевна Евтюкова. "VALUATION OF THE FUNCTIONAL EFFICIENCY OF THE USE OF A MODIFIED DESIGN OF A COMBINED ARC PROSTHESIS." СИСТЕМНЫЙ АНАЛИЗ И УПРАВЛЕНИЕ В БИОМЕДИЦИНСКИХ СИСТЕМАХ, no. 2 (July 11, 2022): 25–27. http://dx.doi.org/10.36622/vstu.2022.21.2.015.
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В работе приведены результаты изучения функциональной эффективности применения модифицированной конструкции комбинированного дугового протеза с эластичным полимером при частичном отсутствии зубов. Дана сравнительная характеристика применения данной модифицированной конструкции, съемных пластиночных протезов с кламмерной фиксацией из акриловых полимеров протезов и ортопедических конструкций из безакриловых литьевых термопластических полимеров у 60 пациентов с дефектами зубных рядов. Проведен объективный осмотр полости рта, тканей протезного ложа, состояния зубных протезов, оценка субъективных ощущений пациентов и отзывы пациентов о результатах лечения и качестве протезов на основании метода анкетирования в разные сроки после протезирования. Данные проведенного обследования были внесены в разработанные индивидуальные карты опроса и осмотра. На основании полученных данных были сделаны выводы, что применение модифицированной конструкций комбинированного дугового протеза с эластичным полимером препятствует возникновению воспалительных процессов в области протезного ложа, способствует скорейшему привыканию пациентов к ортопедической конструкции, улучшает степень фиксации и стабилизации протезов. Оптимальная функциональная эффективность модифицированной конструкций комбинированного дугового протеза с эластичным полимером при частичном отсутствии зубов способствует повышению качества жизни пациентов и быстрой адаптации к съемным протезам The paper reviews a combined arc prosthesis with an elastic polymer: its modified design, functional effectiveness and application in case of the partial teeth loss. The study compared the above denture modification, removable lamellar dentures with clasp fixation made of acrylic polymers and prosthesis made of non-acrylic molded thermoplastic polymers in 60 patients with dentition defects. An objective examination of the oral cavity, prosthetic bed tissues, denture condition were conducted. The authors assessed subjective sensations of patients and their feedback on the results of treatment and the quality of prostheses based on the tailor made questionnaire at different times after prosthetics. The data obtained were introduced into the developed individual survey and inspection records of patients. Based on the data obtained, it is concluded that the use of a modified design of a combined arc prosthesis with an elastic polymer prevents the occurrence of inflammatory processes in the area of the prosthetic bed, contributes to the rapid adaptation of patients to the orthopedic structure, and improves the degree of fixation and stabilization of prostheses. The optimal functional efficiency of the modified combined arc prosthesis with an elastic polymer in case of partial teeth loss promotes improvement of the quality of life of patients and rapid adaptation to removable dentures
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Akl, Mohammed A., and Charles G. Stendahl. "Removable Partial Denture Frameworks in the Age of Digital Dentistry: A Review of the Literature." Prosthesis 4, no. 2 (April 20, 2022): 184–201. http://dx.doi.org/10.3390/prosthesis4020019.
Full textAbstract:
Alloys of cobalt chromium have been used for decades to create frameworks for removable partial dentures. While cobalt chromium has multiple advantages, such as strength and light weight, the casting process is laborious and requires special care to ensure that human error is minimized. Furthermore, the display of metal clasps in these frameworks may be considered a limitation at times, especially with esthetically demanding patients. The introduction of digital technology to manufacturing in dentistry has brought forward new methods of fabricating cobalt chromium frameworks, some of which eliminate the casting process. Moreover, the development of high-performance polymers for use as removable partial denture frameworks brings multiple advantages, but raises concerns over design guidelines and principles. This review examines alternatives to conventionally cast frameworks so that clinicians may make evidence-based decisions when choosing framework materials and fabrication methods in the rapidly advancing world of digital dentistry.
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Arnold, Christin, Ramona Schweyen, Arne Boeckler, and Jeremias Hey. "Retention Force of Removable Partial Dentures with CAD-CAM-Fabricated Telescopic Crowns." Materials 13, no. 14 (July 20, 2020): 3228. http://dx.doi.org/10.3390/ma13143228.
Full textAbstract:
The aim of this study was to compare the retention forces after artificial aging of telescopic crowns fabricated either by a conventional lost-wax technique or by computer-aided design/computer-aided manufacturing (CAD-CAM) technology. Two types of telescopic crowns (0°) were fabricated conventionally using high-noble (group A) and non-precious metal (group B). CAD-CAM fabricated telescopic crowns (0°) were made of non-precious metal (group C). Retention forces were assessed before and after artificial aging and after axial and non-axial loading. Initially [I.] and after artificial aging [IV.], specimens of group C (I. 16.2 N; IV. 13.6 N) exhibited the highest retention forces. The retention forces in groups B (I. 12.5 N; IV. 4.6 N) and A (I. 9.6 N; IV. 2.9 N) were found to be lower than those of group C. The retention force differences between the groups were statistically significant (p < 0.001) at all measurement times [I. vs. IV.]. Different fabricated telescopic crowns with approximately identical designs and materials exhibited different retention forces and different long-term retentive behavior. An optimized CAD-CAM process with individually defined design parameters ensured telescopic crowns with a better fit. These findings might influence prospective clinical decision-making.