Keywords
Abstract
The current study aimed to determine the effect of different implant impression splinting techniques on dimensional accuracy. Five analog implant pairs were fixed in 5 jaw models using auto polymerizing resin. After completing the polymerization for 1 week, the impression copings were connected to the analogs. Then, the models were scanned by a laboratory scanner, and the results were used as reference data. In the next step, impression copings were splinted with flowable composite material. Then, the copings were separated from the analogs and connected to one of the analogs by turning 180 degrees, and the copings were scanned with a scanner. This process was repeated for auto polymerizing acrylic resin [which was cut in the middle and then connected by the same material], BIS-acryl composite resin, and light cure glass ionomer. The scanner output was entered into the GOM Inspect software, and the obtained information was saved in three-dimensional form and STL format. The distance, depth, and angle of implants were measured by software, and Friedman's non-parametric test was used for statistical analysis in different splinting materials. Data from this study showed that no significant differences were seen regarding implant distances [p=0.121], implant depths [p=0.334], and implant angles [p=0.856] using different splinting materials compared to the master model. In conclusion, we may demonstrate that due to insignificant differences regarding linear, depth, and angular errors between implants and master model as well as acceptable values of the errors, studied splinting materials are recommended to achieve accurate impressions in implant treatments.
References
Martínez-Rus F, García C, Santamaría A, Özcan M, Pradíes G. Accuracy of definitive casts using 4 implant-level impression techniques in a scenario of multi-implant system with different implant angulations and subgingival alignment levels. Implant Dent 2013;22[3]:268-276.
Alikhasi M, Alsharbaty MHM, Moharrami M. Digital implant impression technique accuracy: A systematic review. Implant Dent 2017;26[6]:929-935.
Alexander Hazboun GB, Masri R, Romberg E, Kempler J, Driscoll CF. Effect of implant angulation and impression technique on impressions of NobelActive implants. J Prosthet Dent 2015;113[5]:425-431.
Papaspyridakos P, Gallucci GO, Chen C-J, Hanssen S, Naert I, VandenbergheB. Digital versus conventional implant impressions for edentulous patients: Accuracy outcomes. Clin Oral Implants Res 2016; 27[4]:465-472.
Papaspyridakos P, Hirayama H, Chen CJ, Ho CH, Chronopoulos V, Weber HP. Full-arch implant fixed prostheses: A comparative study on the effect of connection type and impression technique on accuracy of fit. Clin Oral Implants Res 2016;27[9]:1099-1105
Negahdari R, Barzegar A, Mortazavi Milani A, Sheikh Ahmadi Y, Rahbar M. Comparison of the accuracy of fixture-level implant impressions using two different materials for splinting. J Adv Periodontol Implant Dent 2022:1-7.
Dodia MA, Lagdive SB, Shah RJ, Patel NN. The effect of various splinting materials on the accuracy of implant impressions: an in vitro study. Int J Prosthodont Restor Dent 2022:12[1]:16-24.
Jayaswal A. A comparative evaluation of the positional accuracy of multiple implants by open tray impression technique using three different splinting materials: An in vitro study. Univ J Dent Sci 2021;7[2]:29-35.
Chaudhary NK, Gulati M, Pawah S, Tiwari B, Pathak C, Bhutani M. An in vitro study to assess the positional accuracy in multiple implants using different splinting materials in open-tray impression technique. Indian J Dent Sci 2021;13:108-117.
Tan MY, Yee SHX, Wong KM, Tan YH, Tan KBC. Comparison of three-dimensional accuracy of digital and conventional implant impressions: Effect of interimplant distance in an edentulous arch. Int J Oral Maxillofac Implants 2019;34:366–380.
Ribeiro P, Herrero-Climent M, Diaz-Castro C. Accuracy of implant casts generated with conventional and digital impressions-An in vitro study. Int J Environ Res Public Health 2018;15:1599.
Mandelli F, Gherlone E, Keeling A, Gastaldi G, Ferrari M. Full-arch intraoral scanning: Comparison of two different strategies and their accuracy outcomes. J Osseointegration 2018;10:65–74.
Flugge TV, Schlager S, Nelson K, Nahles S, Metzger MC. Precision of intraoral digital dental impressions with iTero and extraoral digitization with the iTero and a model scanner. Am J Orthod Dentofacial Orthop 2013;144:471–478.
Shankar SD, Doddamani S. To evaluate and compare the accuracy of definitive casts using various splinting methods on implant level impressions in All-on-Four treatment: An in vitro study. J Indian Prosthodont Soc 2020; 20:193-201.
Neshandar M, Baloch F, Mousavisedighi SS, Bitaraf T. Evaluation of the effect of two types of auto-polymerizing acrylic resin splints on dimensional accuracy in open tray impression technique. J Res Dent maxillofac Sci 2019;4[4]:23-27.
Nayar S, Rathinavel PM, Bhuminathan S, Raghavendrajayesh S, Vidhya J. Impression technique in implantology: A review. Res J Pharm Biol Chem Sci 2015;5:1934-1940.
Jemt T. In vivo measurements of precision of fit involving implant-supported prostheses in the edentulous jaw. Int J Oral Maxillofac Implants 1996;11:151-158.
Ibrahim TO, Ghuneim WA. Composite resin versus two different splinting techniques on evaluation of impression accuracy for dental implants. Life Sci J 2013;10[12s]:1013–1018.
Amornvit P, Sanohkan S, Peampring C. Studying the optical 3D accuracy of intraoral scans: An in vitro study. J Healthc Eng 2020;2020:1-9.
Joda T, Bragger U. Patient-centered outcomes comparing digital and conventional implant impression procedures: a randomized crossover trial. Clin Oral Implants Res 2016;27:e185e9.
Ibrahim TO, Ghuneim WA. Composite resin versus two different splinting techniques on evaluation of impression accuracy for dental implants. Life Sci J 2013;10[12s]:1013–1018
Vigolo P, Fonzi F, Majzoub Z, Cordioli G. An evaluation of impression techniques for multiple internal connection implant prostheses. J Prosthet Dent 2004;92[5]:470-476.
Kavadia V, Kourtis S, Zoidis P, Sarafianou A. The influence of impression coping splinting on the accuracy of the open-tray technique. Gen Dent 2019 May-Jun;67[3]:e5-e9.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright (c) 2025 Zahra Rezaei Pourmashizi, Parviz Amini