Avaliação comparativa da latência e da duração do Cloridrato de Levobupivacaína 0,5% sem e com vasoconstritor em anestesia terminal infiltrativa

Abstract

The purpose of this study was to comparatively evaluate the time of latency and duration of two types of levobupivacaine 0,5%: plain and with epinephrine 1:200.000, in maxillary infiltrative anesthesia. The infiltration anesthesias were perfomed in the vestibule in the upper caninine chosen at random by the voluntee in a triple-blind study. The chosen tooth was anesthetized with both anesthetic solution in two sessions with a minimum interval of 48 hours. The time of latency and duration of pulpar anesthesia were analysed by eletric pulp tester (Analytic Technology) and the soft tissue duration was noted by the volunteer. The results showed statistical significant difference (p< 0,05) when there was vasoconstrictor addition in time of pulpar (p= 0,0004) and soft tissue (p= 0,0019) anesthesia; however, no significanct difference was obtained in latency period (p=0,6547). it was concluded that both Solutions were effective in obtaining anesthesia for hard and soft tlssues and the addition of 1:200.000 epinephrine prolonged the duration of anesthesia.