Title
Digital versus conventional impression accuracy for complete-arch implant rehabilitation: An in vitro study
Authors
Krishnendhu Sai*, Byju Paul Kurian, Litto Manual, Shalu Sara Aby, Sandra S Anand, Fathima Mohamad Najeeb & Vrinda Nandakumar
Affiliation
Department of Prosthodontics, Mar Baselios Dental College, Kothamangalam, Kerala, India; *Corresponding author
Byju paul Kurian - E-mail: dr.byjupaulkurian@gmail.com; Phone: +91
9447049455
Litto Manual - E-mail: littodoc@hotmail.com; Phone: +91 9496633333
Shalu Sara Aby - E-mail: Shalusara1019@gmail.com; Phone: +91
9620304421
Sandra S Anand - E-mail: sandraanand990@gmail.com; Phone: +91
8606489623
Fathima Mohamad Najeeb - E-mail: fathimaarzan@gmail.com; Phone: +91
9746384232
Vrinda Nandakumar - E-mail: nvrinda22@gmail.com; Phone: +91
9986126426
Krishnendhu Sai - E-mail: krishnendhunadesh@gmail.com; Phone: +91 9778373177
Article Type
Research Article
Date
Received March 1, 2026; Revised March 31, 2026; Accepted March 31, 2026, Published March 31, 2026
Abstract
Accurate implant position transfer remains critical for passive fit in full-arch implant prostheses, particularly challenging with angulated implants in edentulous mandibles. This in vitro study compared ten digital impressions (TRIOS scanner) versus ten conventional splinted open-tray polyether impressions using an edentulous mandibular model with six implants. Three-dimensional deviations were measured via coordinate measuring machine, revealing no statistically significant differences between techniques via independent t-test analysis. Conventional impressions demonstrated slightly superior X- and Y-axis precision, while digital impressions shows marginally better Z-axis trueness, both proves clinically acceptable. These findings advance prosthodontic practice by validating both digital and conventional impression techniques for complete-arch implant rehabilitation while highlighting conventional method predictability for complex cases.
Keywords
Digital impression, conventional impression, implants, accuracy
Citation
Sai et al. Bioinformation 22(3): 1854-1859 (2026)
Edited by
Vini Mehta
ISSN
0973-2063
Publisher
License
This is an Open Access article which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. This is distributed under the terms of the Creative Commons Attribution License.
