Title

Accuracy of digital and conventional implant impression techniques - A comparative clinical study

Authors

N. Jailaan Murshitha*, Prasad Aravind, K. Abhinav Mohan, Lino Paul, Unni Pympallil & Shabana Ebrahim

Affiliation

Department of Prosthodontics, Crown and Bridge, Mahe Institute of Dental Sciences and Hospital (MINDS), Chalakkara, Pallor, Mahe 673 310, U.T of Puducherry, India; *Corresponding author

Email

N. Jailaan Murshitha - E-mail: jailaanmurshi@gmail.com
Prasad Aravind - E-mail: araviprasu@gmail.com
K. Abhinav Mohan - E-mail: abhinavmoh@gmail.com
Lino Paul - E-mail: 1989linopaul@gmail.com
Unni Pympallil - E-mail: unnipympallil@gmail.com
Shabana Ebrahim - E-mail: dr.shabanaebrahim@gmail.com

Article Type

Research Article

Date

Received September 1, 2026; Revised September 30, 2026; Accepted September 30, 2026, Published September 30, 2026

Abstract

Because an incorrect transfer of 3D implant sites might result in an ill-fitting prosthetic replacement with problems including peri implantitis, screw loosening, screw fracture, prosthesis or implant fracture, precise implant impressions are crucial. Therefore, it is of interest to evaluate and compare the accuracy of digital and conventional implant impression techniques in partially edentulous cases with two posterior implants. Fifteen patients underwent both conventional polyvinyl siloxane impressions and digital intraoral scanning and the resulting master models were analyzed using laboratory scanning and three-dimensional reverse engineering software to assess inter-implant distance, angulation, rotation and surface mismatch. There was statistically insignificant differences were noted between the two impression techniques for inter-implant distance, angulation, rotation, or distal implant surface mismatch, whereas a significantly greater mesial implant surface mismatch was found with the digital impression technique (p = 0.02484). Strong positive correlations were observed between the two techniques for distance, angulation and rotation, while a moderate positive correlation was noted for mesial and distal implant surface mismatch. Thus, digital impressions showed accuracy comparable to conventional impressions for short-span posterior implant restorations and can be considered a reliable alternative for routine clinical application.

Keywords

Conventional impression, dental implant impression, digital impression, implant accuracy, intraoral scanner

Citation

Murshitha et al. Bioinformation 22(9): 5780-5785 (2026)

Edited by

Vini Mehta

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.