3D Volumetric Plaque Assessment on Teeth, Composite Restorations, and Ceramic Veneers Using an Intraoral Scanner

The goal of this observational study is to evaluate and compare a 3D intraoral scanner-based, computer-assisted approach for assessing dental biofilm/plaque accumulation on natural teeth and restorative surfaces with a conventional clinical plaque index (Turesky modified Quigley-Hein Plaque Index, TMQHPI) in systemically healthy adults. The main questions it aims to answer are: * How well does the plaque-covered surface measurement derived from 3D intraoral scanner data agree with TMQHPI scores after plaque disclosure? * How sensitively do the two methods detect changes in plaque levels after supervised toothbrushing? * Do plaque accumulation patterns differ between natural tooth surfaces and restorative materials (direct composite restorations and indirect ceramic veneers), and where are plaque-retentive areas most frequently located? Participants (≥18 years) will receive routine professional mechanical plaque removal as part of standard clinical care. They will then be asked to avoid mechanical and/or chemical plaque control for 4 days. At the follow-up visit, participants will undergo: 1. An intraoral scan and standardized photographs of the full dental arch, 2. Plaque disclosure followed by repeat scanning/photography and TMQHPI scoring by a periodontist, 3. Supervised toothbrushing using the modified Bass technique for 2 minutes, followed by a final scan and photographs. Digital models will be used to quantify plaque-covered surface measures and to generate 3D maps of plaque-retentive areas.

NCT Number	NCT07421687
Lead Sponsor	Trakya University
Conditions	Dental Plaque Accumulation, Oral Hygiene, Oral Health, Dental Materials, Dental Plaque Imaging Methods, Dental Plaque Index
Enrollment	45 participants
Start Date	2026-03-16
Primary Completion	2027-03-16 (estimated)
Study Completion	2027-03-24 (estimated)
Updated on ClinicalTrials.gov	2026-02-23