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Artykuły w czasopismach na temat „Open tray splinted impressions”

Autor: Grafiati

Data publikacji: 2 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Nidawani, Prakash, Shiva Sai Vemula, Pooja Nagoji, Saumya Singh, and Girish Galagali. "An unconventional impression method using implant mount: an alternative to open-and closed-tray impression technique." International Journal of Dental Materials 05, no. 02 (2023): 37–42. http://dx.doi.org/10.37983/ijdm.2023.5203.

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Background:Various impression techniques have been proposed for making implant prostheses. Impressions are made at implant level –closed and open tray impressions, as well as abutment level impressions. Closed and open tray copings are used to make the impressions. The limitations associated with the implant impression copings, including expensive ones, pose a significant challenge in limited mouth-opening cases, and customization of copings is not feasible.Aim: This study aimed to compare the dimensional accuracy of four impression methods, open-tray, closed-tray, disposable mount as coping a

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International, Journal of Medical Science and Innovative Research (IJMSIR). "A Comparative Study to Evaluate The Accuracy of Open Tray Splinted and Non-Splinted Implant Level Impressions and Impressions Obtained From Two Intraoral Scanners For Three Implants Placed in A Partially Edentulous Arch - An in Vitro Study." International Journal of Medical Science and Innovative Research (IJMSIR) 9, no. 4 (2024): 185–97. https://doi.org/10.5281/zenodo.15422901.

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<strong>Abstract</strong> Title: A comparative study to evaluate the accuracy of open tray splinted and non-splinted implant level impressions and impressions obtained from two intraoral scanners for three implants placed in a partially edentulous arch - an in vitro study <strong>Objective</strong>: The aim of this in vitro study was to compare and evaluate the accuracy of open tray splinted and non-splinted Implant level impression and impressions obtained from two intraoral scanners for three implants placed in a partially edentulous arch and to evaluate which of the two scanners used (Trios

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Selvaraj, Sunantha, Jayashree Mohan, Paul Simon, and Jayachandran Dorairaj. "Comparison of Accuracy of Direct Implant Impression Technique using Different Splinting Materials." International Journal of Prosthodontics and Restorative Dentistry 4, no. 3 (2014): 82–89. http://dx.doi.org/10.5005/jp-journals-10019-1112.

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ABSTRACT Introduction The accuracy of an impression remains critical factor in achieving passive fit of an implant framework. The accuracy of the master cast would depend on the type of impression material, the implant impression technique and accuracy of die material. The different impression techniques advocated in the literature for implant impressions include direct (open tray) and indirect (closed tray) techniques. Direct technique use square impression copings that are picked up in the impressions which were used in this study. Objective To evaluate the accuracy of direct impression made

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Debajyoti Sarkar, Shitij Srivastava, Abhinav Shekhar, Amrita Jayaswal, Love Bhatia, and Anshuman Chaturvedi. "EVALUATION OF ACCURACY OF TWO DIFFERENT IMPRESSION MATERIALS AND THREE DIFFERENT IMPRESSION TECHNIQUES ON THE VERTICAL MISFIT OF A THREE UNIT IMPLANT SUPPORTED FIXED DENTURE PROSTHESES." UNIVERSITY JOURNAL OF DENTAL SCIENCES 6, no. 1 (2020): 15–20. http://dx.doi.org/10.21276/ujds.2020.6.1.6.

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   AIM: The aim of the study is to evaluate the accuracy of two different impression materials and three different impression techniques on the vertical misfit of a three-unit implant supported fixed denture prostheses.Materials and Methods: A total of 60 casts were fabricated for the present study with a closed tray, open tray and open tray splinted abutment impression technique. Two different commercially available impression materials were used - polyether and addition silicone. Both the materials were used for all the above impression techniques.Results: Accordingtotheres

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Prerna, Kaushik, Lahori Manesh, Shahi Shikha, Sisodiya Siddharth, Agarwal Abhinav, and Srivastava Neha. "An in-vitro study to evaluate the accuracy of master casts obtained from different transfer impression techniques for a multi-unit implant restoration using two different impression materials evaluated by a 3-D optical scanner." Journal of Orofacial Rehabilitation 5, no. 1 (2025): 3–11. https://doi.org/10.5281/zenodo.15557573.

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<strong>Abstract</strong> <strong>Background: </strong>The precise transfer of implant positions from the oral cavity to the working cast is critical for the passive fit of implant-supported prostheses. This study aimed to evaluate and compare the accuracy of master casts obtained through various impression techniques using two elastomeric materials—Polyvinyl Siloxane (PVS) and Polyether (PE)—assessed using a 3D optical scanning system (DWOS). <strong>Materials and Methods: </strong>An edentulous maxillary reference model with four internal connection implants was used. Forty impre

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6

Lam, Tran Hung, Nguyen Phuong Hang, Lam Dai Phong, Vo Chi Hung, and Hoang Viet. "Comparison of Accuracy between Digital and Conventional Impression Techniques in Full-Arch Edentulous Implant Patients: An In Vitro Study." Dental Hypotheses 16, no. 2 (2025): 53–55. https://doi.org/10.4103/denthyp.denthyp_10_25.

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Introduction: We aimed to compare the accuracy of digital and conventional impression techniques in full-arch edentulous implant patients and to evaluate the impact of using an auxiliary geometry part (AGP). Methods: A mandibular edentulous stone cast with four multiunit abutment analogs was fabricated as the master cast. This cast was scanned using an industrial scanner to generate reference data. Impressions were then obtained using three techniques: intraoral scanning (IOS), IOS with an AGP (IOS-AGP), and the open-tray splinted conventional technique (OTS). The precision of the impression m

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7

Pujari, Malesh, Pooja Garg, and D. R. Prithviraj. "Evaluation of Accuracy of Casts of Multiple Internal Connection Implant Prosthesis Obtained From Different Impression Materials and Techniques: An In Vitro Study." Journal of Oral Implantology 40, no. 2 (2014): 137–45. http://dx.doi.org/10.1563/aaid-joi-d-10-00207.

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Movement of impression copings inside the impression material using a direct (open tray) impression technique during clinical and laboratory phases may cause inaccuracy in transferring the 3-dimensional spatial orientation of implants intraorally to the cast. Consequently, the prosthesis may require corrective procedures. This in vitro study evaluated the accuracy of 3 different impression techniques using polyether and vinyl polysiloxane (VPS) impression material to obtain a precise cast for multiple internal connection implants. A reference acrylic resin model with 4 internal connection impl

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8

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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Nateghi, Mehrdad, Ramin Negahdari, Sahar Molaei, Ali Barzegar, and Sepideh Bohlouli. "Comparison of the Accuracy of Fixture-Level Implant Impression Making with Different Splinting Techniques." International Journal of Dentistry 2021 (October 14, 2021): 1–9. http://dx.doi.org/10.1155/2021/2959055.

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Objectives. The impression-taking technique is one of the most critical factors that not only prevents the shrinkage caused by polymerization but also enhances the accuracy of implant impressions. Also, choosing the right time of taking impressions after splinting implants is one of the important criteria that affects the impression-taking technique. Accordingly, the present study aimed to evaluate the accuracy of different splint methods for implant impressions made at different times. Methods. In this in vitro study, a two-piece metallic index was prepared, and the patient’s jaw was simulate

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10

Swallow, Stephen T. "Technique for Achieving a Passive Framework Fit: A Clinical Case Report." Journal of Oral Implantology 30, no. 2 (2004): 83–92. http://dx.doi.org/10.1563/0.694.1.

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Abstract The clinical application of a 4-step technique for achieving the passive fit of an implant-supported cast bar or framework is reported. Implant-level transfers were attached, splinted intraorally with pattern resin, picked up in an open-tray elastomeric impression, and used to fabricate a working cast containing implant analogs. A light-cured template was used to verify master cast accuracy. A ceramometal fixed partial denture restoration was fabricated on the working cast with a preliminary try-in of the cast metal framework. A passive prosthesis fit was achieved. Failure to create a

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11

Hussien, Hussameldien, and Natashekara Mallesh. "A Comparative study of Different Impression Materials and Techniques of Dental Implant at The Second Stage of Procedure." International Journal of Dentistry Research 4, no. 2 (2019): 90–93. http://dx.doi.org/10.31254/dentistry.2019.4210.

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Background of the study: Dental implants are one of the most sought-after choice of treatment for restoration and rehabilitation of missing teeth. However, the accuracy of the removable or fixed superstructures over the dental implants is influenced for a major proportion by the impression techniques and materials. This paper discusses the comparison of the accuracy of different impression materials and techniques used in the second stage of the dental implant treatment in vivo. Objective: The objective of the paper is to study the comparison of the accuracy of different impression materials a

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12

de Avila, Erica Dorigatti, Fernanda de Matos Moraes, Sabrina Maria Castanharo, Marcelo Antonialli Del'Acqua, and Francisco de Assis Mollo. "Effect of Splinting in Accuracy of Two Implant Impression Techniques." Journal of Oral Implantology 40, no. 6 (2014): 633–39. http://dx.doi.org/10.1563/aaid-joi-d-12-00198.

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Because there is no consensus in the literature about the need for a splint between copings, the aim of this study was to evaluate, in vitro, the accuracy of 2 impression techniques for implant-supported prostheses. A master cast was fabricated with four parallel implant abutment analogs and a passive framework. Two groups with 5 casts each were formed: Group 1 (squared impression copings with no splint: S) and Group 2 (splinted squared impression copings, using metal drill burs and Pattern resin: SS). The impression material used was polyvinyl siloxane with open trays for standard preparation

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13

Singh, Navdeep, Saurav Kumar, Thiruvalluvan N, Parag Dua, and Sonam Yangchen. "A modified open tray direct abutment level impression technique: A clinical tip." IP Annals of Prosthodontics and Restorative Dentistry 9, no. 2 (2023): 87–91. http://dx.doi.org/10.18231/j.aprd.2023.018.

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Reproducing the accurate intraoral relationship of an implant through impression making is first step in achieving accurate fit prosthesis. Traditionally impression techniques used in implant dentistry can be classified into closed tray and open tray impression techniques. Open tray impressions are considered to be more accurate as compared to the closed tray impressions in cases with multiple implants. It requires long impression copings which are picked up in the impression during impression procedure thereby reproducing the exact relationship of an implant. Present article describe a modifi

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14

Rajput, Mansi, J. Baranikrishnan, Manawar A. Mansoor, Radhika Thakkar, Shivani Karre, and Jeetu Verma. "Evaluation of Dimensional Change in Different Elastomeric Impression Materials Used in Implants: An Original Research." Journal of Pharmacy and Bioallied Sciences 16, Suppl 1 (2024): S605—S608. http://dx.doi.org/10.4103/jpbs.jpbs_886_23.

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ABSTRACT Aim: The study’s objective was to assess the dimensional accuracy of hybrid polyether and polyvinyl siloxane materials for implant impressions. Materials and Methods: Nine groups were created from 45 samples of various building materials and construction techniques from the study. Five samples were tested, and 45 impressions were recorded. Results: The hybrid non-splinted technique has improved implant site replication, accuracy, and low interimplant distance alterations. Conclusion: The finest possible reproduction of implant sites on the master cast was made feasible by the use of a

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15

Kumar, Varun, Shubham Talele, and Jyotsna Seth. "Comparison of dimensional accuracy of digital impression technique versus conventional impression technique on parallel endosseous dental implants: An in vitro study." International Journal of Oral Health Dentistry 10, no. 4 (2024): 290–95. https://doi.org/10.18231/j.ijohd.2024.051.

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To create an implant prosthesis that fits well, a precise implant impression is necessary. This in vitro study assessed the dimensional accuracy of open tray impressions vs digital impressions taken with an intraoral scanner for tracking the locations of parallel-placed endosseous implants.Two parallel endosseous implants were positioned in a mandibular customized model made up of epoxy resin at the first premolar sites. The inter-implant distance was measured using a Co-ordinate Measuring Machine (SIPCON SVI CNC 3D). Conventional open tray impressions were made using addition silicone, while

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16

Chang, Brian Myung W., and Robert F. Wright. "A solid bar splint for open-tray implant impression technique." Journal of Prosthetic Dentistry 96, no. 2 (2006): 143–44. http://dx.doi.org/10.1016/j.prosdent.2006.06.004.

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Shaik Riyaz, Basha, Dondla Shravani, Channamsetty Praveena, et al. "Impact of abutment angulation on the accuracy of closed tray versus open tray implant impressions using noble bio-care active implants." Bioinformation 21, no. 06 (2025): 1370–74. https://doi.org/10.6026/973206300211370.

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The influence of abutment angulation on implant impression accuracy by comparing Closed Tray and Open Tray techniques in a clinical setting is of interest to dentists. Hence, a prospective cross-sectional analysis was conducted on 60 patients receiving implant-supported prostheses, stratified by abutment angulation (0°C, 15°C and 30–45°C). Impressions were made using polyvinyl siloxane and accuracy was quantified via mean MM discrepancy and procedural performance scores. The Open Tray technique demonstrated superior dimensional fidelity (mean discrepancy = 0.46 mm) versus the Closed Tray (0.72

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G.S, Prasanthi, Uppala Sushma, Tikkisetty Chaitanya Jyothi, Varchaswi Vellanki, Raguri Manaswi, and Neha Agrawal. "Effect of implant angulation and impression technique on Nobel active implant impressions: An original study." Bioinformation 21, no. 05 (2025): 1191–94. https://doi.org/10.6026/973206300211191.

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Accurate implant impressions are essential for the success and longevity of implant-supported prostheses. The Nobel Active system has a tapered body and aggressive thread design, demanding high precision. Therefore, it is of interest to compare open-tray and closed-tray techniques for impression accuracy. Implants were placed at 0°, 15°, and 25° angulations for evaluation. A Coordinate Measuring Machine was used for 3D deviation measurements. At 0°, both techniques showed negligible differences in accuracy. At 15° and 25°, the open-tray technique had significantly better accuracy (p < 0.05)

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Wolfart, Stefan, and Burak Yilmaz. "A technique for facilitating open-tray implant impressions." Journal of Prosthetic Dentistry 122, no. 4 (2019): 417–19. http://dx.doi.org/10.1016/j.prosdent.2019.06.017.

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Assila, Layla, Hicham Soualhi, and Amal El Yamani. "IMPRESSION TECHNIQUES FOR IMPLANT DENTISTRY (PART 2) : OPEN TRAY TECHNIQUES." International Journal of Advanced Research 9, no. 10 (2021): 1227–31. http://dx.doi.org/10.21474/ijar01/13671.

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A highly accurate impression is one of success requirements in implant dentistry. A passively fitting prothesis is achieved when the 3-dimensional position of the implants is precisely transferred to the cast. Various impression techniques are described in the literature. Each one presents indications, qualities and limits. Many studies compared the main techniques which are closed and open-tray impressions along with their specificities. In this second part, the open-tray technique is described and discussed then compared with the closed-tray one.

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Dr., Udfer Hameed, Mohd Ali Dr., Qazi Shazana Nazir Dr., Sandeep Kour Bali Dr., and Shabir Ahmed Shah Dr. "Effect of Impression Trays and Materials on the Accuracy of Open Tray Implant Impressions: An in Vitro Comparative Study." International Journal of Innovative Science and Research Technology 8, no. 1 (2023): 263–68. https://doi.org/10.5281/zenodo.7558025.

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One of the most important steps in achieving passive fit of a prosthesis is making precise impressions. The aim of the present study was to evaluate the accuracy of open tray implant impression made with two different impression trays and impression materials. Methodology: The study was carried on a simulated acrylic resin model with two implants placed at premolar and molar region. Open tray implant impressions were made using two different impression trays and materials as follows: Group 1: Polyether custom tray impression, Group 2: Polyether stock tray impression, Group 3: Polyvinylsiloxane

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Ribeiro, Paulo, Mariano Herrero-Climent, Carmen Díaz-Castro, et al. "Accuracy of Implant Casts Generated with Conventional and Digital Impressions—An In Vitro Study." International Journal of Environmental Research and Public Health 15, no. 8 (2018): 1599. http://dx.doi.org/10.3390/ijerph15081599.

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Purpose: The aim of this study was to compare the accuracy of digital dental impressions with the accuracy of impressions obtained via conventional techniques. Methods: Two different master models were created, one with parallel implants (model 1) and the other with non-parallel implants (model 2). These reference master models included 4 Klockner KL RP implants (Klockner Implant System SA, Barcelona, Spain), which were juxta-placed and equidistant in the intermentoneal region. In model 1 the implants were placed parallel to each other, whereas in model 2 the implants were placed such that the

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Kurian, Nirmal, Kevin George Varghese, Samiksha Wadhwa, and Aneeta Mary Sabu. "A technique to splint open-tray implant impression transfer copings using ligature wire." Dental Update 52, no. 5 (2025): 360–61. https://doi.org/10.12968/denu.2025.52.5.360.

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Farronato, Davide, Pietro Mario Pasini, Veronica Campana, Diego Lops, Lorenzo Azzi, and Mattia Manfredini. "Can transfer type and implant angulation affect impression accuracy? A 3D in vitro evaluation." Odontology 109, no. 4 (2021): 884–94. http://dx.doi.org/10.1007/s10266-021-00619-y.

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AbstractImpression accuracy is fundamental to achieve a passive fit between implants and the superstructure. Three transfer types were tested to evaluate the differences in impression accuracy and their efficiency in case of different implant angles. A master model with four implant analogues placed at 0°, 15° and 35° was used. 27 impressions were taken with three different types of impression coping: closed tray technique coping (CT), open tray technique coping (COT) and telescopic open tray coping (TOT). The impressions were poured. Analogues were matched with scan bodies to be scanned and e

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Mahrous, Hayat, Ghada Shehab, and Hanaa Sallam. "EFFECT OF IMPLANT ANGULATION AND TRAY TYPE ON DIMENSIONAL ACCURACY OF OPEN TRAY IMPLANT IMPRESSIONS." Egyptian Dental Journal 62, no. 1 (2016): 463–75. http://dx.doi.org/10.21608/edj.2016.92730.

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Ikram, Javed, and Nabeel Essa. "Making an open-tray implant or abutment-level impression technique easier." Dental Update 48, no. 7 (2021): 592–93. http://dx.doi.org/10.12968/denu.2021.48.7.592.

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Various methods exist for taking implant impressions. The open-tray or pick-up impression technique is one of the conventional methods for transferring the impression coping from the implant to the impression. In this method, a window directly above the implant is made in a stock or custom tray to allow access to the impression coping. Traditionally, the window is either left open, or closed with melted wax or foil. This technique tip describes a modification to create a stable and secure seal over the opening using rayon-based adhesive tapes. The benefits of this modification over the convent

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Nandini, Vidyashree V., Surya Rengaswamy, and Nikhath Sultana. "A Simple Modified Open Tray Implant Impression Technique in a Patient with Fixed Orthodontic Appliance Therapy." Journal of Clinical Prosthodontics and Implantology 6, no. 1 (2024): 27–29. http://dx.doi.org/10.55995/j-cpi.2024006.

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Background: Implant based restorations are an integral part of orthodontic treatment currently and this combination provides increased treatment options. Making impressions for implant based restorations in subjects undergoing orthodontic treatment is a challenging task. Aim: This article presents a simple technique to achieve precise impressions utilizing commonly available materials in dental operatory. Case Description: Patient undergoing orthodontic therapy requiring replacement of missing lateral incisor was planned for implant placement and crown fabrication simultaneously during fixed a

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Paul, Nirupam, Jogeswar Barman, and Barasha Goswami. "Comparative evaluation of linear dimensional accuracy of impressions made with different elastomeric impression materials (Polyether and Polyvinyl siloxane) in angulated and parallel implants-An invitro study." IP International Journal of Maxillofacial Imaging 9, no. 1 (2023): 11–24. http://dx.doi.org/10.18231/j.ijmi.2023.003.

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To date no technique has been proven to guarantee a completely passive fit of implant supported prosthesis framework. Several clinical variables such as angulation of implants, impression material and technique used may affect the precision of impressions. Hence, this study is designed to evaluate and compare the dimensional accuracy of the resultant casts made from open tray implant level impressions with two different impression materials (polyvinyl siloxane and polyether) in parallel and angulated implants. The study consisted of two control groups; master model –1with parallel implants and

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Ozcelik, Tuncer Burak, and Burak Yilmaz. "A Functional Open-Tray Impression Technique for Implant-Retained Overdenture Prostheses." Journal of Oral Implantology 38, no. 5 (2012): 617–19. http://dx.doi.org/10.1563/aaid-joi-d-10-00159.

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Several implant impression techniques with different materials have been described in the literature. Generally, border molding, functional, and final impressions have been made with 3 different materials, which makes the procedure technique-sensitive and time-consuming. A combination of open-tray and functional impression techniques is described in this technical report. Border molding and functional impression procedures are made at the same time using a vinyl polysiloxane impression material, which makes this technique a simple and time-efficient alternative for clinicians.

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Chandraker, Neeraj Kumar. "Incremental impression technique for an implant-retained orbital prosthesis." Journal of Indian Prosthodontic Society 25, no. 2 (2025): 185–88. https://doi.org/10.4103/jips.jips_22_25.

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Accurate impressions are an essential prerequisite for fabricating implant-retained maxillofacial prostheses. This article describes an impression technique for recording orbital defects by making increments for an implant-retained orbital prosthesis using an open-tray impression. This technique enables an accurate transfer of implant position and recording of the area of interest. A wide range of impression-transfers, including dental implant impression posts, can also be used.

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Karl, Matthias, and Victor Palarie. "Variables Affecting the Accuracy of Implant Master Casts: An In Vitro Pilot Study." Journal of Dental Surgery 2014 (May 14, 2014): 1–6. http://dx.doi.org/10.1155/2014/273079.

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Impression and master cast accuracy have been identified as being the major determinants of superstructure fit in implant-supported restorations. The goal of this in vitro investigation was to determine the effects of different transfer components, impression materials, disinfection, storage time, and stone type on master cast accuracy. Following impression making from a reference model with two internal-hex bone-level implants and master cast fabrication (eight experimental groups; n = 5), a bar-type measurement device equipped with a strain gauge was fixed on all master casts while strain de

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Paes-Junior, Tarcisio José de Arruda, Paolo Freitas, Renato Sussumu Nishioka, Gabriela Nogueira de Melo Nishioka, and Leonardo Jiro Nomura Nakano. "Open tray impression technique using a silica-nylon mesh for splitting implants: a case report." ARCHIVES OF HEALTH INVESTIGATION 10, no. 7 (2021): 1141–46. http://dx.doi.org/10.21270/archi.v10i7.5301.

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This article describes an alternative open tray technique for implant impressions using a novel reinforced silica-nylon mesh covered with acrylic resin as a splitting system in assembling the abutment complex. The purpose of the procedure is to simplify the technique and improve the resin contraction during clinical procedure, and also optimizes and reduces the chairside time for the patient. The clinical report was supported by an in vitro study where an analysis tool, Strain Gauge Analysis, was used to prove the clinical effectiveness of the technique. The peri-implant strain was determined

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Arieli, Adi, Maram Adawi, Mahmoud Masri, et al. "The Accuracy of Open-Tray vs. Snap on Impression Techniques in A 6-Implant Model: An In Vitro 3D Study." Materials 15, no. 6 (2022): 2103. http://dx.doi.org/10.3390/ma15062103.

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To compare the three-dimensional accuracy of an open-tray and two snap on impression techniques (with and without connecting the plastic caps of the snap on impression transfers) in a full arch 6-implant model, a reference acrylic resin model of the maxilla with six implants was fabricated. Prominent geometrical triangles, in the palate area, served as reference points for a digital overlap between scans. Three impression transfer techniques were evaluated and compared: open-tray direct impression (DI), snap on impression (SpO), and connected snap on impression (SpOC). Polyether impression mat

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Gupta, Sonam, Aparna Ichalangod Narayan, and Dhanasekar Balakrishnan. "In Vitro Comparative Evaluation of Different Types of Impression Trays and Impression Materials on the Accuracy of Open Tray Implant Impressions: A Pilot Study." International Journal of Dentistry 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/6306530.

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Purpose. For a precise fit of multiple implant framework, having an accurate definitive cast is imperative. The present study evaluated dimensional accuracy of master casts obtained using different impression trays and materials with open tray impression technique.Materials and Methods. A machined aluminum reference model with four parallel implant analogues was fabricated. Forty implant level impressions were made. Eight groups (n=5) were tested using impression materials (polyether and vinylsiloxanether) and four types of impression trays, two being custom (self-cure acrylic and light cure a

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Sampaio-Fernandes, Manuel António, Ricardo Pinto, Paulo Rocha Almeida, Maria Margarida Sampaio-Fernandes, Duarte Marques, and Maria Helena Figueiral. "Trueness of Extraoral Digital Impressions for Full-Arch Implant Impressions—In Vitro Study." Materials 17, no. 12 (2024): 2932. http://dx.doi.org/10.3390/ma17122932.

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Direct scanning of silicone impressions is a valid technique. However, studies in implant-supported rehabilitations are lacking. This in vitro study aims to compare the trueness of impressions obtained with two types of silicone and their corresponding stone casts, using two laboratory scanners in a full-arch implant rehabilitation. A master cast with six dental implants was scanned with a 12-megapixel scanner to obtain a digital master cast. Ten implant impressions were made using two silicones (Zhermack and Coltene) with the open-tray technique. The impressions and stone casts were scanned b

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Tripathi, Shuchi, Pooran Chand, Raghuwar D. Singh, Ramashankar Siddharth, and Balendra P. Singh. "A Noval Approach of Altered Cast Technique in Bilateral Partial Maxillectomy Patient with Severely Restricted Mouth Opening." ISRN Dentistry 2011 (October 31, 2011): 1–4. http://dx.doi.org/10.5402/2011/607175.

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Patients with extensive head and neck injuries due to trauma and/or extensive surgical procedures often exhibit a severely limited ability to open the mouth. For the dentist involved in prosthodontic treatment of such patients, restricted mouth opening commonly leads to compromised impressions and prostheses especially in cases where both hard and soft palatal parts have been resected. In prosthodontic treatment, the loaded impression tray is the largest item requiring intraoral placement. During impression procedures, wide mouth opening is required for proper tray insertion and alignment. Thi

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Neshandar, M., F. Baloch, Ss Mousavisedighi, and T. Bitaraf. "Evaluation of the Effect of Two Types of Autopolymerizing Acrylic Resin Splints on Dimensional Accuracy in Open Tray Impression Technique." Journal of Research in Dental and Maxillofacial Sciences 4, no. 4 (2019): 23–27. http://dx.doi.org/10.29252/jrdms.4.4.23.

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Burns, Jason, Richard Palmer, Leslie Howe, and Ron Wilson. "Accuracy of open tray implant impressions: An in vitro comparison of stock versus custom trays." Journal of Prosthetic Dentistry 89, no. 3 (2003): 250–55. http://dx.doi.org/10.1067/mpr.2003.38.

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Sampaio-Fernandes, Manuel António, Ricardo Pinto, Paulo Rocha Almeida, Maria Margarida Sampaio-Fernandes, Duarte Marques, and Maria Helena Figueiral. "Accuracy of Extraoral Digital Impressions with Multi-Unit Implants." Applied Sciences 13, no. 15 (2023): 8769. http://dx.doi.org/10.3390/app13158769.

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The aim of this in vitro study was to evaluate the accuracy of impressions made using two different silicones and corresponding stone casts in full-arch implant rehabilitation, using two laboratory scanners. A master model with six dental implants was created, scanned with a 12-megapixel scanner and used as digital master model. Ten implant impressions were obtained via two silicone impressions systems—Coltene® and Zhermack®—using the open-tray technique and poured gypsum. Two extraoral scanning systems (S600 ARTI Zirkonzhan® and Identica T500 Medit®) were used to scan the impressions and ston

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Maiti, Subhabrata, MSai Teja Reddy, Nabeel Ahmed, and DhanrajM Ganapathy. "Evaluation of accuracy and time taken to make an open tray implant impressions with two techniques." Journal of Advanced Pharmaceutical Technology & Research 13, no. 6 (2022): 437. http://dx.doi.org/10.4103/japtr.japtr_308_22.

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Emara, Nermine Fayez, Safaa E. Asal, and Tamer M. N. Mostafa. "Comparative study of conventional and digital implant impression techniques with different implant angulations (in-vitro study)." Tanta Dental Journal 22, no. 1 (2025): 8–14. https://doi.org/10.4103/tdj.tdj_10_24.

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Abstract Purpose Comparing cast accuracy of unsplinted open tray implant impression technique to digital impressions at different implant angulations using two measurement methods [Coordinate Measuring Machine (CMM) and Geomagic software]. Materials and methods Two mandibular completely edentulous epoxy resin models (A and B) representing a clinical scenario: model A four implant analogs parallel to each other, two at the canine region and two at the first molar region, and model B four implant analogs with different angulation; two at the canine region with 15º angles, and two at the first mo

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Sekar, Abinaya, Saravanakumar Mariappan, Chitra Shankar Krishnan, et al. "Evaluation of accuracy of different elastomeric materials in open tray implant level technique for single tooth impressions." Journal of Dental Implant Research 41, no. 4 (2022): 91–101. http://dx.doi.org/10.54527/jdir.2022.41.4.91.

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IRANI, Dany, and Mayssaê EL AHMADIÉ. "Effects of impression material and implant angulation on the impression accuracy of external connection implants: An in vitro study." International Arab Journal of Dentistry 11, no. 1 (2020): 11–18. http://dx.doi.org/10.70174/iajd.v11i1.451.

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A precise impression is mandatory to obtain passive fit in implant-supported prostheses. The aim of this study was to evaluate the effect of impression material and implant angulation on the impression accuracy of external-connection implants. Four customized epoxy resin master models, with twoimplant analogs placed parallel or with different degrees of divergence (10, 20 and 30 degrees), were fabricated with their corresponding passively fitted reference frameworks. Ten impressions were taken, for each model, with vinyl polysiloxane (VPS) and polyether (PE) using custom open tray impression t

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Rajagopal, Menon Prasad, Pradeep Samuel, Subin Eranhikkal, and Rahul Nageshraj. "Letter to Editor: Concerns regarding the published article, “A technique for facilitating open tray implant impressions” by Wolfart et al." Journal of Prosthetic Dentistry 124, no. 6 (2020): 820. http://dx.doi.org/10.1016/j.prosdent.2020.03.037.

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Krishnakumar, Karthika, and Ritesh Kalaskar. "Comparative evaluation of digital and tray impression technique as a method of recording anatomical details of cleft lip and palate in neonates – A randomized controlled clinical trial." Journal of Indian Society of Pedodontics and Preventive Dentistry 43, no. 2 (2025): 244–51. https://doi.org/10.4103/jisppd.jisppd_533_24.

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ABSTRACT Background: Cleft lip and palate (CLP), affecting 1 in 700–1000 live births, cause feeding difficulties in neonates due to oronasal communication, requiring feeding plates. Traditional impression methods risk material aspiration and distortion. Aim: The study aimed to assess the efficacy of digital impressions for recording CLP anatomical details in neonates. Setting and Design: Conducted as a single-center, open, parallel-arm, single-blinded randomized controlled clinical trial over 18 months, the study involved healthy, nonsyndromic neonates aged 1–15 days with Veau’s class III CLP.

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Aliyev, V., E. Rustamov, and D. Ashrafov. "TECHNOLOGY AND FEATURES OF OBTAINING IMPRESSIONS DURING IMPLANTATION USING THE ALL-ON4 METHOD." Scientific heritage, no. 151 (December 26, 2024): 28–29. https://doi.org/10.5281/zenodo.14556002.

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A temporary prosthesis for the period of implant healing, which is 3-4 months, performs an aesthetic function and stabilizes the implants by connecting them. Otherwise, the recommendations for the rehabilitation period are the same as for any other implantation. Following a gentle diet is mandatory for every patient after surgery. The course of the rehabilitation period largely depends on the patient and on compliance with all the doctor’s recommendations. To summarize, we can say that the All-on-4 technique is indicated in situations where it is not possible to install distant (distal)

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Yilmaz, Burak, and Stefan Wolfart. "Response to Letter to the Editor regarding “Wolfart and Yilmaz: A technique for facilitating open-tray implant impressions. J Prosthet Dent 2019;122:417-9.”." Journal of Prosthetic Dentistry 124, no. 6 (2020): 820–21. http://dx.doi.org/10.1016/j.prosdent.2020.09.009.

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Elumalai, Ambedkar, Saravanakumar Mariappan, ChitraShankar Krishnan, et al. "Evaluation of rotational resistance, and rotational and vertical discrepancy of three different elastomeric impression materials with open tray implant level impressions on a special model." Journal of Dental Implant Research 40, no. 3 (2021): 66–75. http://dx.doi.org/10.54527/jdir.2021.40.3.66.

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Alikhasi, Marzieh, Hakime Siadat, Alireza Nasirpour, and Mahya Hasanzade. "Three-Dimensional Accuracy of Digital Impression versus Conventional Method: Effect of Implant Angulation and Connection Type." International Journal of Dentistry 2018 (June 4, 2018): 1–9. http://dx.doi.org/10.1155/2018/3761750.

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Purpose. The aim of this in vitro study was to compare the accuracy of different implant impression techniques of the maxillary full arch with tilted implants of two connection types. Materials and Methods. Two maxillary edentulous acrylic resin models with two different implant connections (internal or external) served as a reference model. Each model had two anterior straight and two posterior angulated implants. Ninety impressions were made using an intraoral scanner (Trios 3Shape) with scan bodies for digital impression (groups DII and DIE), a custom open tray with additional silicone for

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Pera, Francesco, Paolo Pesce, Francesco Bagnasco, et al. "Comparison of Milled Full-Arch Implant-Supported Frameworks Realised with a Full Digital Workflow or from Conventional Impression: A Clinical Study." Materials 16, no. 2 (2023): 833. http://dx.doi.org/10.3390/ma16020833.

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Background: The aim of the present study was to investigate the accuracy of a new digital impression system, comparing it to the plaster impression technique in the realization of full-arch implant-supported metal frameworks. Methods: We took 11 scans (8 of the upper maxilla and 3 of the lower jaw) on a sample of nine patients previously rehabilitated with fixed full-arch screw-retained prostheses following the Columbus Bridge Protocol (CBP) with four to six implants (total: 51) since at least 4 months. Two impressions were taken for each dental arch: one analogic plaster impression using pick

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