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Journal articles on the topic 'Dental Impression Material'

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1

Albahbah, Dr Shoaib Youssef. "Assessment of the of fixed dental prosthesis impressions received at commercial dental laboratories in Aljabal-Alakhdar region, Libya0." Asian Journal of Basic Science & Research 06, no. 01 (2024): 113–24. http://dx.doi.org/10.38177/ajbsr.2024.6111.

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Background: Crown and bridge prosthodontics needs an accurate and precise impression (positive replica) of the abutment teeth and the edentulous region to be rehabilitated for the dental technician to be able to construct the high quality and well adapted fixed dental restoration without mistakes. The aim of the current survey was to assess any visible mistakes commonly observed in fixed dental prosthesis impressions received at five commercial dental laboratories, frequency errors determination, and to determine any possible association between the preparation finish line errors and other ass
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H. Abuzinadah, Samar, Abdulrahman J. Alhaddad, Rafan M. Alyamani, et al. "Comparative Analysis of Dimensional Accuracy in the Integration of Different Setting Times of Impression Materials." Journal of Pioneering Medical Sciences 14, no. 05 (2025): 116–23. https://doi.org/10.47310/jpms2025140518.

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Background: Dental impressions are essential in restorative and prosthetic dentistry, as their accuracy directly impacts the fit and functionality of dental prostheses. The selection of impression material and its corresponding setting time plays a crucial role in determining final dimensional precision. This in vitro study aimed to assess the dimensional accuracy of dental impressions created using various combinations of impression materials with different setting times, providing evidence-based guidance for clinicians in selecting optimal and reliable material combinations. Materials and Me
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Bustiuc, Steliana-Gabriela, Raluca Briceag, Gheorghe Raftu, et al. "CLINICAL EVALUATION OF THE ERRORS OF FIXED PROSTHODONTIC IM-PRESSIONS." Romanian Journal of Oral Rehabilitation 16, no. 4 (2024): 439–44. https://doi.org/10.62610/rjor.2024.4.16.42.

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The precise transfer of the elements of the prosthetic field requires a good knowledge of soft and hard tissue anatomy, especially in the area of the cervical finish line. Dentists also need to understand how to select gingival retraction methods, but also how to properly handle impression materials. The purpose of this study was to evaluate clinically detectable errors commonly seen in impressions for fixed prosthodontic restorations Materials and methods A number of 194 dental impressions were examined that were registered with the aim of making fixed prosthetic restorations. The dental impr
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Indahyani, Didin Erma, Izzata Barid, and Priska Amelia Anggraeni. "The value of imbibition and syneresis for dental impression on red seaweed: a laboratory experiment." Padjadjaran Journal of Dentistry 35, no. 3 (2024): 274. http://dx.doi.org/10.24198/pjd.vol35no3.49071.

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ABSTRACT Introduction: Alginate is a type of elastic dental impression, which is an irreversible hydrocolloid. The main components in sodium alginate can be obtained naturally through the extraction process from seaweed (Kappaphycus alvarezii). Several physical characteristics must be fulfilled by dental impressions, such as dimensional stability related to imbibition and syneresis. ANSI/ADA specification No.18 regarding the maximum permitted change in alginate impression materials may not exceed 0.5%. This research aimed to analyze the value of imbibition and syneresis on dental impressions o
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Buzayan, M., M. R. Baig, and N. Yunus. "Evaluation of accuracy of complete-arch multiple-unit abutment-level dental implant impressions using different impression and splinting materials." INTERNATIONAL JOURNAL OF ORAL & MAXILLOFACIAL IMPLANTS 28, no. 6 (2014): 1512–20. https://doi.org/10.5281/zenodo.8323.

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Purpose: This in vitro study evaluated the accuracy of multiple-unit dental implant casts obtained from splinted or nonsplinted direct impression techniques using various splinting materials by comparing the casts to the reference models. The effect of two different impression materials on the accuracy of the implant casts was also evaluated for abutment-level impressions. Materials and Methods: A reference model with six internal-connection implant replicas placed in the completely edentulous mandibular arch and connected to multi-base abutments was fabricated from heat-curing acrylic resin.
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Novac, Andreea Codruta, Anca Tudor, Daniela Maria Pop, et al. "Conventional Dental Impressions vs. Impressions Reinforced with Rigid Mouthguards." Polymers 16, no. 7 (2024): 994. http://dx.doi.org/10.3390/polym16070994.

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The impression materials utilized today in dental medicine offer a good reproducibility and are easily accepted by patients. However, because they are polymer-based, they have issues regarding their dimensional stability. In this respect, the present work proposes a new type of dental impression, which is reinforced with rigid mouthguards. The aim of the study is to test the performances of such new impressions by comparing them to conventional ones—from this critical point of view, of the dimensional stability. Three types of polymeric materials were considered for both types of impressions:
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Sikri, Dr Arpit, and Dr Jyotsana Sikri. "Dental Implant Impressions: The First Impression Is The Last Impression: Short Communication." ENVIRO Dental Journal 3, no. 2 (2021): 43–45. http://dx.doi.org/10.12944/edj.03.02.05.

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Dental implant is defined as a prosthetic device made of alloplastic material(s) implanted into the oral tissues beneath the mucosal and/or periosteal layer and on or within the bone to provide retention and support for a fixed or removable dental prosthesis; a substance that is placed into and/or on the jaw bone to support a fixed or removable dental prosthesis [Glossary of Prosthodontic Terms (GPT 9)]. Dental implants have been swiftly gaining popularity as a treatment modality of choice in prosthodontics i.e. both fixed and removable. Impression is defined as negative likeness or copy in re
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Kollefrath, Ralf, Marcel Savary, and Jörg Schwela. "An Evaluation of the Fit of Metal-Ceramic Restorations Made with an Autoclaved Silicone-Based Impression Material." Journal of Contemporary Dental Practice 11, no. 4 (2010): 63–70. http://dx.doi.org/10.5005/jcdp-11-4-63.

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Abstract Aim To demonstrate the clinical feasibility of autoclaving certain silicone impression materials in order to avoid potential cross-contamination during handling, transport, and subsequent processing. Background Semicritical devices are recommended to be treated at least with high-level disinfectants or actually steam sterilized at 134°C. To date dental impressions have been disinfected rather than sterilized, so the question remains should they be sterilized before being sent to the dental laboratory? Case Descriptions Two identical impressions per case were made of metal-ceramic crow
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K. Gikunda, Mary, Olivia A. Osiro, Hazel O. Simila, Kassim B. Alasow, and James M. Nyaga. "Factors that influence the quality of final impressions for fixed dental prostheses in Nairobi, Kenya." International Journal of Dental Materials 05, no. 03 (2023): 69–77. http://dx.doi.org/10.37983/ijdm.2023.5302.

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Background:Good quality dental impressions free of air bubbles, voids, steps, drags, streaks and tears are a pre-requisite for the fabrication of well-fitting fixed dental prostheses (FDP). The quality of impressions is dependent on clinician and material factors.Aim:To evaluate factors that influence the quality of final impressions for FDP in Nairobi, Kenya. Methods:In this cross-sectional study, 234 impressions received by five dental laboratories were analyzed. The study collected information on the type of tray, impression material, technique, type of prostheses, and clinically detectable
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Craig, R. G. "Review of Dental Impression Materials." Advances in Dental Research 2, no. 1 (1988): 51–64. http://dx.doi.org/10.1177/08959374880020012001.

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Major advances in impression materials and their application have occurred during the last decade, with greater emphasis being placed on rubber impression materials than on dental compound, zinc oxide-eugenol, and agar and alginate. Of particular interest has been the effect of disinfection solutions on the qualities of impressions and the biocompatibility of impression materials. The principal advance in hydrocolloids has been the introduction of the agar/alginate impression technique, which has simplified the procedure and improved the quality of gypsum dies compared with those prepared in a
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Mehta, Deepak, Rohit Shetty, and Ganesh R. Bhandari. "Vinyl Polysiloxane Ether: A Breakthrough in Elastomeric Impression Material." World Journal of Dentistry 5, no. 2 (2014): 134–37. http://dx.doi.org/10.5005/jp-journals-10015-1274.

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ABSTRACT A meticulous impression is paramount for a precision fit of indirect restoration. Unfortunately, for many clinicians, making an impression for fixed prostheses is one of the challenging aspects in restorative dentistry. Advances in elastomeric chemistries have given birth to a new generation of impression materials: a combination of a polyvinyl and a polyether impression material, called vinyl siloxane ether. The purpose of this article is to explore the new impression material which is effective and efficient to obtain predictable, accurate, high quality impressions in dental practic
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Mangano, Alessandro, Matteo Beretta, Giuseppe Luongo, Carlo Mangano, and Francesco Mangano. "Conventional Vs Digital Impressions: Acceptability, Treatment Comfort and Stress Among Young Orthodontic Patients." Open Dentistry Journal 12, no. 1 (2018): 118–24. http://dx.doi.org/10.2174/1874210601812010118.

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Objective: The objective of the present study was to compare patients’ acceptability, comfort and stress with conventional and digital impressions. Materials and Methods: Thirty young orthodontic patients (15 males and 15 females) who had no previous experience of impressions were enrolled in this study. Conventional impressions for orthodontic study models of the dental arches were taken using an alginate impression material (Hydrogum®, Zhermack Spa, Badia Polesine, Rovigo, Italy). Fifteen days later, digital impressions of both arches were acquired using an intraoral scanner (CS3600®, Carest
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Amărăscu, Marina Olimpia, Adrian Daniel Târtea, Dan Subțirelu, et al. "DIGITAL IMPRESSION TECHNOLOGIES – INTRAORAL SCANNING USED IN RESTORATIVE DENTISTRY." Romanian Journal for Dental Research 1, no. 4 (2024): 70–79. https://doi.org/10.58179/rjdr1405.

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(1) Background: In recent years, there have been many technological advances in intraoral scanners. These developments have improved the efficiency and accuracy of intraoral scanning in CAD/CAM procedures. (2) Aim: The study aimed to compare results obtained in dental impression technology with intraoral scaner to impressions taken with conventional impression materials. (3) Methods: the stages of two types of clinical oral rehabilitation (in dentate and edentulous patients) were compared. In each clinical situation, both impressions were taken using the classic impression method and digital i
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Joshi, Kalit Raj, Manjeev Guragain, Lok Raj Khanal, et al. "ROLE OF THREE DIFFERENT DISINFECTANTS FOR PREVENTING BACTERIAL GROWTH IN DENTAL IMPRESSION MATERIAL." Journal of Chitwan Medical College 12, no. 3 (2022): 53–55. http://dx.doi.org/10.54530/jcmc.1155.

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Background:
 Dental impressions become contaminated with micro-organism from patient’s saliva and blood which can cross-infect stone cast poured against them. The aim of the present study was to compare the efficacy of commercially available disinfection products, one containing glutaraldehyde, sodium hypo chloride and ethanol for disinfection of impressions material.
 Methods: For this investigations, dental impression of 60 patients were taken. Impression was made in 5 mm slices for each disinfectants. Sectioned impression were immersed in gluteral aldehyde, sodium hypo chloride, a
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Begum, Aleya, ASM Shahin, Md Ali Afzal Khan, Md Saiful Islam, and Rubaba Ahmed. "The quality of Alginate Impressions for fabrication of Fixed Partial Dentures Received by Commercial Dental Laboratories in Bangladesh." Update Dental College Journal 2, no. 1 (2013): 02–07. http://dx.doi.org/10.3329/updcj.v2i1.13950.

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The study was conducted to evaluate the quality of alginate impression sent to commercial dental laboratories for fabrication of Fixed partial dentures (FPD), to describe the frequency of clinically detectable errors and to determine correlation between factors. A Cross-sectional Study in eight commercial dental laboratories was conducted and a sample of 171 impressions was examined. For each impression, type of tray used, number of prepared units per jaw, model preparation time, manipulation quality, impression of arch, tray showing through impression material and utilization of embedded retr
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Gogushev, Kiril, and Metodi Abadjiev. "CONVENTIONAL VS DIGITAL IMPRESSION TECHNIQUE FOR MANUFACTURING OF THREE-UNIT ZIRCONIA BRIDGES: CLINICAL TIME EFFICIENCY." Journal of IMAB - Annual Proceeding (Scientific Papers) 27, no. 2 (2021): 3765–71. http://dx.doi.org/10.5272/jimab.2021272.3765.

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Introduction: Taking an impression of the oral cavity, which accurately recreates the prosthetic field, the surrounding hard dental and soft tissues, is one of the main and most important stages in the process of making any fixed prosthetic restoration. In modern prosthetic dentistry, impressions taken with the help of polyether and vinyl polysiloxane impression materials are common. Digital impressions eliminate some of the steps of conventional impression techniques and save clinical time. Aim: The aim of this article is to compare the clinical time in digital and conventional impression tec
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Begum, Aleya, Rubaba Ahmed, and Md Saiful Islam. "Digital Impression." City Dental College Journal 9, no. 2 (2012): 31–34. http://dx.doi.org/10.3329/cdcj.v9i2.12321.

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The use of different impression materials is in vogue for last few years with a view of capturing more accurate dental impression, which in turn produces more accurate fitting restoration. For achieving this goal, one should have ample knowledge about the different physical and mechanical properties, as well as in different techniques with the most recent advances. In this review, we highlighted the impression material and recent updates on Digital Dentistry with the benefits which can be gained from this system by both Clinician and Dentist. DOI: http://dx.doi.org/10.3329/cdcj.v9i2.12321 City
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Kutsyuk, A. "Effectiveness of digital and conventional impressions used in the replacement of hard tissue defects of lateral teeth: evaluation of patient perception, treatment comfort and time spent." SUCHASNA STOMATOLOHIYA 121, no. 4 (2024): 33. http://dx.doi.org/10.33295/1992-576x-2024-4-33.

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Introduction. The accuracy of the final impressions significantly affects the quality of the manufactured prosthesis. The transfer of perfect impressions to dental laboratories is always performed by dentists as part of the daily work of manufacturing prostheses in fixed prosthodontics. The accuracy of the impression depends on the materials themselves, the types of impression spoons and the impression technique. Various materials and printing techniques are used to obtain high-precision impressions. Goal. To conduct a comparative evaluation of the effectiveness of digital and conventional imp
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Rippe, Marília Pivetta, Elen Guerra, Arianne Vallim Pinto Coelho, et al. "Effect of different impression methods and ceramic materials on adaptation of inlays." Brazilian Dental Science 21, no. 3 (2018): 296. http://dx.doi.org/10.14295/bds.2018.v21i3.1543.

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<p><strong>Objective:</strong> The aim of this study was to evaluate the internal and marginal adaptation of inlays fabricated from different types of impressions (conventional and digital) and different ceramics (feldspathic and lithium disilicate). <strong>Material and Methods:</strong> Forty premolars were prepared for all-ceramic inlay restoration and assigned to 4 groups (n=10), according to the impression method (conventional with addition silicone and digital impressions) and ceramic type (lithium disilicate and feldspathic ceramic blocks). For each type of
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raj, Prithivi raaj gurusamy, and Ranjith Varghese. "A Questionnaire Survey on Various Impression Techniques and Materials Used for Implant Prosthesis Among Practitioners in and Around Coimbatore District." IOSR Journal of Dental and Medical Sciences 24, no. 6 (2025): 53–56. https://doi.org/10.9790/0853-2406075356.

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Background: Accurate impression techniques and appropriate material selection are essential for the clinical success of implant prostheses. This study aimed to evaluate the awareness, preferences, and practices regarding implant impression techniques among dental practitioners in Coimbatore Materials and methodology: A cross-sectional survey was conducted among 250 dental professionals, including general practitioners, postgraduate students, and specialists. A structured 15-question validated questionnaire was distributed. Data were analyzed using the Chi-square test, and a significance level
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Ajayi, Y. O., and B. O. Akinboboye. "A pilot survey of impression materials and techniques used by dentists in the fabrication of fixed indirect restorations." Nigerian Dental Journal 20, no. 1 (2012): 27–30. http://dx.doi.org/10.61172/ndj.v20i1.119.

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Objective: To assess the choice of impression material and impression technique used by Nigerian dentists for the fabrication of cast restoration.
 Method: A self administered questionnaire was distributed to dentists present at two national dental meeting held at Abuja and Lagos in 2011. The questionnaire assessed their choice of impression materials and technique.
 Result: Fifty one out of 70 questionnaires were returned filled giving a response rate of 73%. There were 54.9% of the respondents who reported addition curing silicone impression as their first choice material for cast
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Amjad Hanif, Mehreen Imran, Hina Rehman, Zudia Riaz, Mahrukh Muhammad, and Zia ur Rehman. "EFFECT OF POURING TIME ON DIMENSIONAL CHANGES IN IRREVERSIBLE HYDROCOLLOID IMPRESSION MATERIAL AFTER TREATMENT WITH DISINFECTANT." Journal of Khyber College of Dentistry 12, no. 04 (2022): 68–73. http://dx.doi.org/10.33279/jkcd.v12i04.47.

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Objectives: To assess the eff ect of pouring time on dimensional changes of alginate impression material after disinfection.Materials and Methods: A total of twenty impressions were made using alginate impression material. The impressions were divided into four groups designated as A, B, C and D. Group A (control) impressions were poured with dental stone immediately after rinsing with tap water. In group B and D impressions were poured after applying disinfectant spray at 10mins and 1hrdelay. Group-C impressions were poured after one hour without spraying disinfectant. All the impressions wer
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Torane, Abhishek Appasaheb, Ashraf Quereshi, Shyam Gundavar, Saee Deshpande, and Neelam Pande. "Comparative evaluation of dimensional accuracy of irreversible hydrocolloid impression material using different types of tray." IP Annals of Prosthodontics and Restorative Dentistry 11, no. 1 (2025): 66–70. https://doi.org/10.18231/j.aprd.2025.013.

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Irreversible hydrocolloid impression materials are widely used in dentistry due to their low cost and ease of use. To ensure accurate models, it is essential to determine the optimal tray design and material. This article compares the dimensional accuracy of irreversible hydrocolloid impressions using four different types. To evaluate the dimensional accuracy of irreversible hydrocolloid impression materials with four different impression tray types, and to identify the optimal tray design and material for producing precise dental models. Dentulous maxillary model was taken for the study. The
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Abe, Hideharu, Hideo Shojaku, and Yukio Watanabe. "Dental-Impression Material in Nasal Cavity." Practica Oto-Rhino-Laryngologica 104, no. 4 (2011): 261–65. http://dx.doi.org/10.5631/jibirin.104.261.

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Naumovski, Borjan, and Biljana Kapushevska. "Dimensional Stability and Accuracy of Silicone – Based Impression Materials Using Different Impression Techniques – A Literature Review." PRILOZI 38, no. 2 (2017): 131–38. http://dx.doi.org/10.1515/prilozi-2017-0031.

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Abstract A quality-made dental impression is a prerequisite for successful fixed-prosthodontic fabrication and is directly dependent on the dimensional stability, accuracy and flexibility of the elastomeric impression materials, as well as on the appropriately used impression techniques. The purpose of this paper is to provide a literature review of relevant scientific papers which discuss the use of various silicone impression materials, different impression techniques and to evaluate their impact on the dimensional stability and accuracy of the obtained impressions. Scientific papers and stu
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Koshelev, konstantin, Nikolay Belousov, Valentina Zobacheva, Vitaly Zobachev, and Igor Kostin. "STUDY OF THE SPATIAL ACCURACY OF JAW MODELS DEPENDING ON THE METHOD OF OBTAINING AN IMPRESSION AND ITS MATERIAL." Actual problems in dentistry 19, no. 4 (2024): 121–25. http://dx.doi.org/10.18481/2077-7566-2023-19-4-121-125.

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Methods for obtaining working and auxiliary dental impressions of patients have been revised in recent decades, which is associated with 3D scanning. At the same time, the policy of import substitution in dentistry is also developing quite actively, which is reflected in the introduction of domestic impression masses for analog prints into public health institutions.
 The aim of study. Reducing the number of complications of dental orthopedic treatment by optimizing the approach to choosing a method for obtaining a working anatomical impression.
 Methodology. Impressions of the mandi
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Kaewbuadee, Kansichaya, Kasinart Paiboonsisijit, Narada Nutchanart, Boonyanit Thaweboon, and Sroisiri Thaweboon. "The Antimicrobial Potential of Vanillin-Incorporated Irreversible Hydrocolloid Impression Material." Key Engineering Materials 942 (March 24, 2023): 77–82. http://dx.doi.org/10.4028/p-g78m10.

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The hydrocolloid impression material is one of the most important materials extensively used in several procedures in the dental field. It is mainly applied for diagnostic and planning in the rehabilitation of oral, orthodontic, and maxillofacial prostheses due to its biocompatibility with the oral tissues, low toxicity, ease of use, and relatively low cost. When doing the impression, the material might be contaminated with blood, saliva, and biofilm from within the patient’s mouth. In these procedures, there are high chance that the microorganisms can be transmitted from patients to the casti
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Guiraldo, Ricardo Danil, Eric Yuiti Hiruo, Danielle Gregorio, et al. "Development of computational thinking for dental students in the use of the intraoral impressions’ technique." CONTRIBUCIONES A LAS CIENCIAS SOCIALES 16, no. 10 (2023): 23379–89. http://dx.doi.org/10.55905/revconv.16n.10-277.

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The accuracy of intraoral impressions is critical for making well-fitting restorations. The possibility of digitalizing the patient's mouth has once been intended for Dentistry, however, the accuracy of dental impressions for different clinical applications is still resisted by professionals. Thus, the understanding of Dentistry students can facilitate the use of the digital technique. The aim of this study was to develop the computational thinking of dentistry students for the use of the intraoral impressions’ technique. Information was collected through searches in Pubmed, Scielo, Scopus, Li
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Nandini, Yamini, KB Vinitha, and M. Smitha. "Comparison of Dimensional Accuracy of Four Different Die Materials before and after Disinfection of the Impression: An in vitro Study." Journal of Contemporary Dental Practice 14, no. 4 (2013): 668–74. http://dx.doi.org/10.5005/jp-journals-10024-1383.

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ABSTRACT Background This study was conducted to compare the linear dimensional accuracy of die materials before and after disinfection of the impression. Type IV and V conventional dental stone, type IV-resin impregnated and copper-plated die materials were studied. Materials and methods A stainless-steel master die analogs to a complete veneer crown preparation with three scribed lines (I: vertical, II and III: horizontal) was machined and measurements were made from these scribed reference lines. Impressions were made with monophase addition silicone impression material for each of the speci
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Sfarghiu, Lorelai Georgeta, Sorin Popşor, Viorel Ştefan Perieanu, et al. "Clinical and microbiological study of bacterial contamination of frequently used dental impression materials." Romanian Medical Journal 63, no. 1 (2016): 24–30. http://dx.doi.org/10.37897/rmj.2016.1.6.

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Mass distribution of different infectious diseases appears even more likely in dentistry than other medical specialities. The purpose of the study is to examine different impressions with alginate materials in order to demonstrate the contamination with different pathogens. Material and method. 63 patients were included in this study. They required specific prosthetic treatment. Preliminary impression were obtained with irreversible hydrocolloid material and microbiologically tested shorthy after removal from the mouth, after washed throughly with cold water and after decontamination with spec
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Shagufta Channa, Maham Shah, Sunayna, Rimsha Lalain, Deepak Kumar, and Aisha Naseem. "A Clinical Comparison of Dental impression accuracy between One-step and Two-step Dual phase impression technique by using Polyvinyl Siloxane Impression Material." JMMC 14, no. 2 (2024): 26–29. http://dx.doi.org/10.62118/jmmc.v14i2.313.

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Objective:: The objective was to assess the number of visible defects within impression made by two different techniques. Methodology: This was comparative cross-sectional study was conducted between June 2019 to December 2019 at out patient department of Institue of dentistry, LUMHS Jamshoro. Two impressions were made from 53 crown preparation by using one step and two step dual phase impression techniques. Totaling to 106 impressions. Polyvinyl Siloxane impression material was used with each technique. Evaluation of impressions were made for tears, voids and bubbles and impression were compu
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J. Alhaddad, Abdulrahman, Samar H. Abuzinadah, Lujain A. Alzahrani, et al. "Dimensional Accuracy of Impression Using Conventional Putty-wash Compared to Modified Putty-wash Technique." Journal of Pioneering Medical Sciences 14, no. 05 (2025): 143–49. https://doi.org/10.47310/jpms2025140521.

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Background: Impression material accuracy is crucial for the fabrication of indirect restorations because distortion during the impression process can affect the final dental prosthesis. However, the impression technique is essential for ensuring a proper fit for the prosthesis. Among various impression materials, this impression creates a dimensionally stable "negative" mold, which serves as the basis for developing a cast for the dental structure. Purpose: To evaluate and compare the dimensional accuracy of conventional and modified putty-wash techniques on measurements of the finish line on
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Amna Adam Ibrahim, Mohammed Nasser Alhajj, and Magdi Wadie Gilada. "Effect of contact time between alginate impression and type III dental stone on cast model properties." RSBO 12, no. 3 (2016): 252–7. http://dx.doi.org/10.21726/rsbo.v12i3.760.

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To measure the effect of different contact time between the alginate impression and type III dental stone on cast model properties in the terms of dimension stability, hardness and surface details reproduction. Material and methods: Sixty-seven cast models were obtained from stainless steel cylinder using alginate impression material and type III dental stone. Thirty-seven cast models were separated after one hour (control group) and 30 cast models were separated from impressions after 9 hours. The samples were evaluated under light microscope for surface details, measured by digital caliper f
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Salah A. Yousief, Khames T. Alzahrani, Suha M. Alhuwairini, et al. "The Effects of Chemical Disinfection on Dimensional Stability among Different Type of Impression Addition Silicon Materials." International Journal of Innovative Research in Medical Science 5, no. 12 (2020): 645–49. http://dx.doi.org/10.23958/ijirms/vol05-i12/1029.

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Introduction: Saliva and blood contaminated impressions are often a source of cross contamination between the clinic and dental laboratory. Explicit communication and observance of an infection control protocol for handling of dental impressions must exist among the office staff as well as between office and dental laboratories. Though disinfection of impression is routinely followed, autoclaving elastomeric impression is an effective method of sterilization them. Objectives: The purpose of this study was to evaluate dimensional stability and detail reproduction of a new addition silicon impre
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Potran, Michal, Branko Strbac, Tatjana Puskar, Miodrag Hadzistevic, Janko Hodolic, and Branka Trifkovic. "Measurement of the accuracy of dental working casts using a coordinate measuring machine." Vojnosanitetski pregled 73, no. 10 (2016): 895–903. http://dx.doi.org/10.2298/vsp150105089p.

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Background/Aim: Dental impressions present a negative imprint of intraoral tissues of a patient which is, by pouring in gypsum, transferred extraorally on the working cast. Casting an accurate and precise working cast presents the first and very important step, since each of the following stages contributes to the overall error of the production process, which can lead to inadequately fitting dental restorations. The aim of this study was to promote and test a new model and technique for in vitro evaluation of the dental impression accuracy, as well as to asses the dimensional stability of imp
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Selvaraj, Sunantha, Alarmelu, Dorairaj Jayachandran, and Shanmuga Priya. "Evaluation of the Efficacy of Novel Self Disinfectant Solution in Irreversible Hydrocolloid Impression Material - An Experimental Study." Indian Journal of Dental Research 34, no. 3 (2023): 252–56. http://dx.doi.org/10.4103/ijdr.ijdr_73_23.

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Abstract Background: Irreversible hydrocolloid materials are widely used for both diagnostic and definitive impression procedures. Impressions can be disinfected by immersion or spraying in any compatible disinfectant. Disinfectants should not adversely affect the dimensional stability of the impression and physical properties of impression material and subsequent dental cast. Objective: The study aims to evaluate the efficacy of a hypochlorous disinfectant solution mixed with irreversible hydrocolloid on setting time, antibacterial efficacy, and dimensional stability. Methodology: Three group
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Bruno, Priscila Jaqueline, and Vanesa Verónica Miana. "Evolution and disinfection of dental impression materials: advances and challenges in dental biosafety." Health Leadership and Quality of Life 2 (December 30, 2023): 184. https://doi.org/10.56294/hl2023184.

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Introduction: Dentistry focused on oral health and used dental impressions as essential tools for designing prostheses and performing dental treatments. These impressions played a crucial role in providing accurate information about oral tissues and dental arches. However, obtaining impressions carried risks of contamination and transmission of infections for both patients and clinical staff. Adequate disinfection proved to be indispensable to ensure safety and quality in the dental environment. Development: Historically, impression materials evolved from the use of beeswax and plaster in the
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Ling, Long, Theresa Lai, and Raj Malyala. "A Newly Formulated Vinyl Polysiloxane Impression Material with Improved Mechanical Properties." Journal of International Society of Preventive and Community Dentistry 14, no. 3 (2024): 252–59. http://dx.doi.org/10.4103/jispcd.jispcd_165_23.

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Abstract Aim: To evaluate the mechanical properties of a newly formulated vinyl polysiloxane (VPS) impression material. Materials and Methods: Experimental, Capture (S&C Polymer), Express, Imprint 3 and Imprint 4 (3M ESPE), Start VPS (Danville), Honigum (DMG), Virtual (Ivoclar Vivadent), Elite HD+ (Zhermack) were evaluated for tear strength, tensile strength, and elongation at break. Un-nicked specimens with a 90° angle on one side (type C) for tear strength were prepared and tested according to ASTM-D624. Dumbbell-shaped specimens (type 1) for tensile strength and elongation at break were
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J. Alhaddad, Abdulrahman, Samar H. Abuzinadah, Arwa Y. Muthaffar, et al. "Assessing the Accuracy of Dental Impressions Fabricated with Modified Plastic Trays Using Compound Wax and Metal Trays: A Comparative Study." Journal of Pioneering Medical Sciences 14, no. 05 (2025): 124–32. https://doi.org/10.47310/jpms2025140519.

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Purpose: This study assessed the accuracy of dental impressions generated from modified plastic trays using impression compound material compared with that of impressions made using stock metal and plastic trays. Methods: In this in vitro study, three types of trays-stock plastic trays, modified plastic trays and stock metal trays (control)-were used, with 30 impressions for each tray type. A Nissan typodont was used as the master cast with standardized prepared teeth. Polyvinyl siloxane impression material with light and regular bodies was used for the impressions. For the modified plastic tr
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Khalaf, Bayan S., Shorouq M. Abass, Aseel Mohammed Al-Khafaji, and Moamin I. Issa. "Antimicrobial Efficiency of Hypochlorous Acid and Its Effect on Some Properties of Alginate Impression Material." International Journal of Dentistry 2023 (November 14, 2023): 1–7. http://dx.doi.org/10.1155/2023/8584875.

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Dental clinicians and professionals need an affordable, nontoxic, and effective disinfectant against infectious microorganisms when dealing with the contaminated dental impressions. This study evaluated the efficiency of hypochlorous acid (HOCl) as an antimicrobial disinfectant by spraying technique for the alginate impression materials, compared with sodium hypochlorite, and its effect on dimensional stability and reproduction of details. HOCl with a concentration of 200 ppm for 5 and 10 min was compared with the control group (no treatment) as a negative control and with sodium hypochlorite
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Wezgowiec, Joanna, Anna Wieczynska, Mieszko Wieckiewicz, et al. "Evaluation of Antimicrobial Efficacy of UVC Radiation, Gaseous Ozone, and Liquid Chemicals Used for Disinfection of Silicone Dental Impression Materials." Materials 15, no. 7 (2022): 2553. http://dx.doi.org/10.3390/ma15072553.

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Effective disinfection of dental impressions is an indispensable requirement for the safety of dental personnel and patients. The ideal method should be not only effective but also convenient, cheap, and environmentally friendly. This study aimed to reliably evaluate the efficacy of ultraviolet C (UVC) radiation, gaseous ozone, and commercial liquid chemicals used for silicone dental impressions disinfection. These methods were applied to two types of elastomeric impression materials: condensation silicones and addition silicones of various consistency (putty, medium, and light). The antimicro
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Anusavice, K. J. "Dental Impression Materials: Reactor Response." Advances in Dental Research 2, no. 1 (1988): 65–70. http://dx.doi.org/10.1177/08959374880020012101.

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A review of the literature reveals an abundance of research papers which are focused on the physical properties and "simulated" clinical performance of impression materials. The three major developments during the past two decades were: (1) the introduction of the dimensionally stable addition silicones, (2) the development of dustless alginates, and (3) the reduction in technique sensitivity which resulted from the availability of automatic-mixing syringe tips. These syringe tips ensure consistently homogeneous mixtures of base and catalyst pastes with reduced waste. In addition, the more rap
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Soliman, Mai, Alhanoof Aldegheishem, Norah Alsubaie, Razan Alshamrani, and Elzahraa Eldwakhly. "Dimensional Accuracy of Working Dies Fabricated by Different Impression Materials and Techniques: 3D Digital Assessment." Journal of Biomaterials and Tissue Engineering 11, no. 1 (2021): 106–11. http://dx.doi.org/10.1166/jbt.2021.2552.

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Accuracy of dental impression plays a significant role in the success of definitive restorations. This study aimed to compare the dimensional accuracy of working dies fabricated using two different impression materials and techniques. Forty working dies fabricated from 40 impressions of preprepared mandibular first molar tooth replica stabilized in a jaw model to receive full coverage crown. Two different Polyvinyl siloxane (PVS) impression materials were used; Aquasil and Virtual. Two different impression techniques were used with each type of impression material; One-step and two-step. The w
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Pathak, B., PK Parajuli, and BB Basnet. "Dimensional Accuracy of Irreversible Hydrocolloid When Mixed with Disinfectant Solutions." Journal of Nepalese Prosthodontic Society 7, no. 2 (2024): 107–14. https://doi.org/10.3126/jnprossoc.v7i2.77556.

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Introduction: Dental impressions, contaminated with blood and saliva are sources of crosscontamination and route for disease transmission. Dental impressions may be decontaminated when disinfectants are incorporated within the impression material, either in the alginate powder or in the mixing liquid. The objective of this study was to investigate the dimensional accuracy of alginate impression material when 1% povidone iodine and 0.1% chlorhexidine were used as mixing liquid. Methods: A total of 69 impressions were obtained from a master model of a stainless-steel ruled block; 23 impressions
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Spielman, Andrew I., and Judit Forrai. "History of the alginate dental impression material." Kaleidoscope history 14, no. 29 (2024): 345–46. https://doi.org/10.17107/kh.2024.29.32.

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Alginate has become a foundational material in dentistry, thanks to its origins in the 1940s, wartime relevance, and ongoing improvements. Although newer technologies like digital impressions are emerging, alginate remains popular due to its ease of use, reliability, and comfort.
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Weber, Peter C., Betsy Davis, and Warren Y. Adkins. "Canal atresia reconstruction with dental impression material." American Journal of Otolaryngology 20, no. 4 (1999): 236–40. http://dx.doi.org/10.1016/s0196-0709(99)90006-6.

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Antohe, Magda Ecaterina, Doriana Forna, and Norina Consuela Forna. "Researches Regarding the Biomechanics Behaviour of some Impressions Biomaterials Used in Dentistry." Key Engineering Materials 614 (June 2014): 144–47. http://dx.doi.org/10.4028/www.scientific.net/kem.614.144.

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The dimensional stability of impression materials is a variable with an impact on the accuracy of dental prostheses; alongside with other factors including the modifications occurred during the material preparation or the impression techniques. The study was based on a laboratory simulation of a clinical situation. The impression materials were: Alginate; Addition silicon materials-AFFINIS and FLEXITIME; Condensation silicon materials-SPEEDEX and OPTOSIL; Polyvinyl siloxane materials-EXPRESS. The impressions were taken at 37 ̊C at 100 per cent humidity and mould in IV class gypsum at intervals
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Kamaladeen, Alaa, and Jawad Mikaeel. "Evaluation of the effect of two different impressions materials on the retention of complete d entures. An in vivo study." Advanced Medical Journal 10, no. 1 (2025): 141–48. https://doi.org/10.56056/amj.2025.328.

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Background and objectives: The choice of impression technique and material can influence the accuracy of the final prosthesis. This study aims to assess the impact of two impression methods and materials on denture retention. Methods: This non-randomized clinical trial was carried out on 30 fully edentulous patients in the College of Dentistry and in Duhok Dental Polyclinics from October 1, 2022, to June 30, 2023. For each participant, two sets of maxillary impressions were taken. The first impression was done with zinc oxide eugenol impression paste and green stick compound for border molding
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Zulkarnain, M., and Sarah Devina. "Pengaruh Penyemprotan Daun Sirih dan sodium Hipoklorit Pada Cetakan Elastomer Terhadap Perubahan Dimensi." Jurnal Material Kedokteran Gigi 5, no. 2 (2016): 36. http://dx.doi.org/10.32793/jmkg.v5i2.252.

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Elastomer is often used to make an impression. In prosthodontics, impression material that have been exposed to infected saliva pose a main source of cross contamination in dental office and laboratories, therefore desinfection of impression is recommended by American Dental Association (ADA) to prevent possible transmission of infectious diseases. Piper betle L. 25% and sodium hypochlorite 0,5% can both be used as desinfection agent by spraying the impression materials. But some desinfection process can effect the dimensional accuracy of the impressions materials especially the hidrophilic ma
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Abdelaziz, Khalid M., Ahmed M. Hassan, and J. S. Hodges. "Reproducibility of sterilized rubber impressions." Brazilian Dental Journal 15, no. 3 (2004): 209–13. http://dx.doi.org/10.1590/s0103-64402004000300009.

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Impressions, dentures and other dental appliances may be contaminated with oral micro-flora or other organisms of varying pathogenicity from patient's saliva and blood. Several approaches have been tried to control the transmission of infectious organisms via dental impressions and because disinfection is less effective and has several drawbacks for impression characterization, several sterilization methods have been suggested. This study evaluated the reproducibility of rubber impressions after sterilization by different methods. Dimensional accuracy and wettability of two rubber impression m
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