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Clinical Evaluation of Color-Adjusting Composite Resin Following In-Office Dental Bleaching
Sponsor: King Abdullah University Hospital
Summary
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.
Official title: Clinical Evaluation of a Single-Shade, Color-Adjusting Composite Resin Following In-Office Dental Bleaching: A Randomized Clinical Trial
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
120
Start Date
2025-03-10
Completion Date
2026-08-01
Last Updated
2025-03-24
Healthy Volunteers
Yes
Conditions
Interventions
Conventional nanohybrid multishade composite and hydrogen peroxide 40% in-Office Tooth Whitening System
Teeth restored with conventional multi shade nanohybrid Resin Based Composite (RBC) Filtek Z350Xt (3M ESPE, San Paul, MN, USA) subjected to bleaching using Opalescence Boost 40% In-Office Tooth Whitening System (Ultradent, Utah, USA)
Single shade nanohybrid composite and hydrogen peroxide 40% in-Office Tooth Whitening System
Teeth restored with One-shade Resin Based Composite (Omnichroma, Tokuyama Dental, Tokio, Japan) subjected to bleaching using Opalescence Boost 40% In-Office Tooth Whitening System (Ultradent, Utah, USA)
Locations (1)
Jordan University of Science and Technology
Irbid, Jordan