Eficácia do anestésico tópico em duas técnicas anestésicas: estudo cego randomizado.

Abstract

In order to reduce the patients discomfort in the face of local injectable anesthesia, there was a growing need for better topical anesthetics. Several types are available for application before small procedures in dentistry and are widely accepted by patients. The objective of this study was to compare the topical anesthetic benzocaine 20% with a placebo, against the possible efficacy of both solutions in the control of pain during the injection of a 30 gauge needle. The randomized controlled study was carried out at Clinic School of Dentistry of the Universidade Federal of Campina Grande (UFCG) with 16 volunteers. The same patient underwent two surgical procedures for the extraction of dental elements 18 and 28, in different consultations, in which benzocaine 20% was used in the first consultation and the placebo in the second consultation, the same anesthetic and surgical procedure was used for all the research participants. The Visual Analogue Scale (VAS) After statistical analysis of the scores, we obtained that the anesthetic benzocaine 20% compared to placebo obtained a significant difference in needle penetration in the bilateral maxillary vestibule region (p = 0.02), already during the penetration of the needle in the region of the palatal mucosa a benzocaine 20% did not present significant difference when compared to placebo (p = 0.53). We can conclude that there was no evaluation of benzocaine in the palatal region, in the perception of pain, when compared to placebo.