Uso da fotobiomodulação pré anestesia odontológica e seus efeitos na eficácia anestésica: estudo clínico controlado randomizado duplo-cego

Abstract

Dental fear and phobia are prevalent throughout the world, and local anesthesia is one of the procedures most feared by patients. Various complementary therapies have emerged to reduce the pain caused by needle insertion and the need for repetition, but to date, there is no evidence of a defined protocol. This study aimed to assess whether photobiomodulation used as preanesthetic therapy in the pterygomandibular anesthesia technique could act to modulate puncture pain and increase the effectiveness of the local anesthetic. To this end, 49 individuals took part in this controlled, randomized, double-blind clinical study and were divided into a control group (n=25) and an experimental group (n=24). The control group underwent the standard anesthetic technique, while the experimental group had an infrared laser applied (100mW at 808nm, 8J for 8 seconds at a single point) immediately before anesthesia at the puncture site. The VAS scale was used to measure the perception of pain before and after anaesthesia. To assess anaesthetic efficacy, we used an electrical test for latency, the number of tubes used and the percentage of anaesthetic failure. Anxiety levels were also assessed using the Beck Questionnaire and systemic effects using cardiovascular indicators. In view of all the outcomes measured, it can be concluded that there was no statistical difference between the groups evaluated.