Title

Comparison of three conventional impression techniques for flabby tissues with intraoral digital scans

Authors

Mithlesh Bhagat¹*, Akriti Agrawal², Awaiz Ahmed³, Manaswini Draksharapu⁴, Priyadarshani⁵, Roopa Kanumuri⁶ & Md Kafeel Ahmed⁷

Affiliation

¹Department of Periodontology and Implantology, Mithila Minority Dental College and Hospital, Darbhanga, Bihar, India; ²Department of Dentistry, VIMSAR, Burla, Sambalpur, Odisha, India; ³Department of Pediatric Dentistry, Consultant, Dr. Awaiz's Dental Planet, Inside Shahgunj Kaman, Main Market Road, Old City, Bidar, Karnataka, India; ⁴Department of Prosthodontist, Mamata Dental College, Khammam, Telangana, India; ⁵Department of Conservative Dentistry and Endodontincs, Bhabha College of Dental Sciences, Bhopal, Madhya Pradesh, India; ⁶Department of Dental and Surgery, Private Practitioner, Zen Dental Studio, Nallagandla, Hyderabad, Telangana, India; ⁷Department of Periodontology and Implantology, MNR Dental College and Hospital, Sangareddy, Hyderabad, Telangana, India; *Corresponding author

Email

Mithlesh Bhagat - E-mail: mithleshbhgat993@gmail.com
Akriti Agrawal - E-mail: akriti.agrawal17@gmail.com
Awaiz Ahmed - E-mail: dr.awaizpedo@gmail.com
Manaswini Draksharapu - E-mail: manu30993@gmail.com
Priyadarshani - E-mail: priyadarshani.rai24@gmail.com
Roopa Kanumuri - E-mail: drroopa@zendentalstudio.co.in
Md Kafeel Ahmed - E-mail: drkafeelsohar@gmail.com

Article Type

Research Article

Date

Received November 15, 2025; Revised December 15, 2025; Accepted December 15, 2025, Published December 15, 2025

Abstract

Accurate impression making for flabby anterior maxillary ridges in edentulous patients remains challenging with conventional techniques, necessitating comparison of their trueness against intraoral digital scanning. Hence, the present study included twenty patients with maxillary edentulism and Siebert Class I or II anterior flabby ridges were included in this crossover clinical study. Four impression methods were performed for each participant: 1) Single-Step Mucocompressive Technique (SMT) with polyvinyl siloxane (PVS) in a stock tray; 2) Window Tray Technique (WTT) using a custom tray with zinc oxide eugenol and light-body PVS; 3) Modified Mucostatic Technique (MMT) with a spaced custom tray and light-body PVS; and 4) Intraoral Digital Scan (IDS) using a structured light scanner. The trueness of each technique was evaluated by superimposing the digital models onto the RSM and calculating the root mean square error (RMSE) in micrometers (μm). The window tray technique produced the most accurate impressions of flabby ridges.

Keywords

Flabby ridge, edentulous, impression technique, intraoral scanner, digital dentistry, complete denture.

Citation

Bhagat et al. Bioinformation 21(12): 4425-4429 (2025)

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.