Title

Accuracy of digital impressions in edentulous arches for implant-supported prostheses: An in vitro comparison

Authors

Ravi Ranjan Sinha¹*, Poda Alekhya¹, Yalavarthy Prathyusha¹, Harprit Kaur¹, Krishnaprasad T.R¹ & Biswajit Panda²

Affiliation

¹Department of Prosthodontics and Crown & Bridge, The Oxford Dental College, Bangalore, India; ²Kalinga Institute of Dental Sciences, KIIT, Deemed to be university, Bhubaneswar, Odisha, India; *Corresponding author

Email

Ravi Ranjan Sinha - E-mail: r.ravi.sinha@gmail.com
Poda Alekhya - E-mail: alekhyapodha@gmail.com
Yalavarthy Prathyusha - E-mail: drprathyushamovva@gmail.com
Harprit Kaur - E-mail: harpritgandhi@gmail.com
T.R. Krishnaprasad - E-mail: krishnaprasad651@gmail.com
Biswajit Panda - E-mail: biswa19.js17@gmail.com

Article Type

Research Article

Date

Received September 1, 2025; Revised September 30, 2025; Accepted September 30, 2025, Published September 30, 2025

Abstract

Accurate impressions are essential for the success of implant-supported prostheses, yet capturing edentulous arches remains challenging due to mucosal support and anatomical variability. This in vitro study compared the accuracy of conventional open-tray impressions with two intraoral scanners (IOS) in maxillary and mandibular edentulous models with six implant analogs. Ten impressions per group were analyzed by superimposing STL files and stone casts against a reference model to measure linear and angular deviations. Results showed significantly lower deviations in both digital groups compared to conventional impressions, with no significant difference between the two IOS types. These findings indicate that intraoral scanners provide superior accuracy and represent a clinically viable alternative for full-arch implant rehabilitations.

Keywords

Digital impression, edentulous arch, implant-supported prosthesis, intraoral scanner, accuracy, 3D analysis.

Citation

Sinha et al. Bioinformation 21(9): 2996-2999 (2025)

Edited by

Hiroj Bagde

ISSN

0973-2063

Publisher

Biomedical Informatics

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.