A prospective, non-randomized, single-arm interventional clinical study with a before-after design will be conducted to assess changes in CIELab color parameters and the Whiteness Index for Dentistry (WID) following a standardized combined dental bleaching protocol. The study aims to evaluate the contribution of the a\* parameter (green-red axis) to overall dental whiteness.
Protocol Amendment History
1 amendment
This ClinicalTrials.gov record has been amended once since 2026-04-23.