Abstract: Objective: This case reports an application of combined internal and external bleaching technique on devitalized maxillary anterior teeth with intrinsic discoloration to materialize the aesthetic need of the patient. Diagnosis and treatment: 3 treatment courses of internal/external bleaching were performed on the nonvital maxillary anterior tooth using 36% hydrogen peroxide gel after obtaining specific diagnosis and written informed consent of the patient, following with resin restoration. The patient was followed up 4 and 10 months after the treatment. Results: After 3 treatment courses of internal/external bleaching, the discolor has been corrected. The following-up 4, 10 months after the treatment showed stable color maintenance, and the color of the resin was compatible with the bleached tooth. Conclusions: Combined internal and external bleaching technique can be a minimally invasive option for discolored nonvital teeth to reach satisfying aesthetic effect.

Key words: nonvital tooth, anterior tooth, intrinsic discoloration, hydrogen peroxide, bleaching technique