Shade Matching of Universal Versus Conventional Nanohybrid Resin Composites in Class IV Restorations After Bleaching

The aim of the current study is to assess the shade matching potential of single shade universal resin composite versus conventional nanohybrid resin composite in class IV restorations after bleaching

Inclusion Criteria:Candidates must have one or more existing class IV restoration.Cases indicated for bleaching.Cooperative patient approving to participate in the trial.Exclusion Criteria:Patients with severe medical conditions that might interfere with the study.Patients with rampant caries or xerostomia.Smoking.Patients with history of hydrogen peroxide sensitivity , periodontal inflammation.Lack of compliance.Tempromandibular joint disorders.Disabilities.