Clinical Evaluation of Color-Adjusting Composite Resin Following In-Office Dental Bleaching

One challenge faced by dental professionals is that, unlike natural tooth structure, composite restorations do not lighten when exposed to bleaching agents. As a result, functional restorations may need replacement after bleaching to match the newly whitened teeth. However, replacing a composite restoration can lead to unnecessary removal of tooth structure, potentially weakening the tooth and increasing its susceptibility to further iatrogenic damage. This study will investigate the ability of Omnichroma restorations to shade-match tooth structure after bleaching. The null hypotheses will be: 1. Single-shade RBC will not exhibit similar shade and optical behavior to conventional RBC across all anterior restorations following bleaching. 2. Patient satisfaction regarding color blending between the restoration and tooth structure will not differ according to the type of material used. 3. Dentist satisfaction regarding color blending between the restoration and tooth structure will not differ according to the type of material used.

NCT Number	NCT06884813
Lead Sponsor	King Abdullah University Hospital
Conditions	Composite Resins
Enrollment	120 participants
Start Date	2025-03-10
Primary Completion	2026-05-01 (estimated)
Study Completion	2026-08-01 (estimated)
Updated on ClinicalTrials.gov	2025-03-24