Avaliação da fototerapia pré-operatória na sensibilidade dental no clareamento dental

Abstract

BACKGROUND: Despite the aesthetic benefit of tooth whitening, side effects are reported in the literature, among them, the most common in teeth with pulp vitality, is tooth sensitivity. The tooth sensitivity is characterized by a sharp pain of short duration in response to thermal stimuli typically, evaporative, tactile, osmotic or chemical and can not be attributed to any other form of dental defect or pathology. To minimize tooth sensitivity, different methods have been proposed, including the Low Level Laser Therapy (LLLT). However, so far there are few data in the literature referring to the use of LLLT in the run-up treatment to prevent tooth sensitivity caused by tooth whitening. Thus, the aim of this work was to investigate whether there is effective use of LLLT in the prevention of tooth sensitivity. METHODS: For the study were selected 24 patients divided into three groups: control, NSAIDs and LBI. In LBI group, the teeth 12/11/21/22 and 32/31/41/42 were irradiated in the apical region 1 hour before the whitening procedure. To evaluate the sensitivity threshold was used pulp tester. Patients were measured in the threshold teeth 11 and 41 before bleaching, before administration of anti-inflammatory or LLLT before and 10 minutes after the end of the bleaching treatment has been performed. The patients underwent two sessions of bleaching treatment clinic, with 38% hydrogen peroxide. CONCLUSION: The results showed that LLLT can minimize tooth sensitivity due to the practice of dental bleaching action with hydrogen peroxide 38%.