DENTAL BLEACHING IN THE OFFICE WITH LOW CONCENTRATION GEL IN A PATIENT WITH A HISTORY OF CANCER - 6 YEARS OF CONTROL

• DOI: 10.22533/at.ed.159342318017

• Palavras-chave: tooth whitening, dentin sensitivity, hydrogen peroxide, nanotechnology, dental aesthetics.

• Keywords: tooth whitening, dentin sensitivity, hydrogen peroxide, nanotechnology, dental aesthetics.

• Abstract:

  Although tooth bleaching is a well accepted and conservative method, much has been investigated regarding the co-carcinogenic potential of agents based on hydrogen peroxide (H₂O₂). In view of the different bleaching techniques, the procedure performed in a dental office has been identified as the technique that offers greater safety and control, being the most indicated for patients who smoke, drink alcohol and have an individual or family history of cancer. Thus, the present case report aims to demonstrate the long-term clinical success of a 16-year-old patient with a history of acute lymphocytic leukemia (ALL) and a complaint of the color of his teeth. After prophylaxis of the teeth and registration of the initial color of A3 on the VITA scale, the gums were protected with a photopolymerizable barrier, followed by 4 applications of a low concentration whitening agent, containing nanometric particles of nitrogenated titanium dioxide (TiO_N), the first at 15% photocatalyzed with LED light source/blue laser, and the second at 10% photocatalyzed with LED light/violet laser. The protocol used was 3 photocatalyses for 2 min with intervals of 30 s between each application, totaling 30 min of gel action on the teeth per session. A total of his bleaching sessions were carried out, reaching color A1. At the end of each session, teeth polishing, application of desensitizer and laser therapy followed the whitening protocol. Six years after the second session, the patient remains satisfied with the whitening achieved, without any damage to his systemic health.