Avaliação comparativa da latência e da duração do cloridrato de evobupivacaína 0,5% sem e com vasoconstritor em anestesia terminal infiltrativa
Comparative study of the latency period and duration of levobupicaine 0.5% plain and with vasoconstrictor in maxillary infiltrative anesthesia
Barros, E.G.; Marquez, I.M.; Zanetta-Barbosa, D.
Rev. odontol. UNESP, vol.35, n2, p.165-170, 2006
Resumo
Este estudo avaliou comparativamente o período de latência e a duração do cloridrato de levobupivacaína 0,5% sem vasoconstritor e com epinefrina 1:200.000 (NOVABUPI®) após anestesia terminal infiltrativa na maxila. As injeções com as duas soluções foram realizadas no mesmo canino superior escolhido previamente pelo voluntário, de forma aleatória, em um estudo triplo-cego, anestesia essa feita com intervalo de, no mínimo, 48 horas. O período de latência e a duração da anestesia pulpar foram analisados pelo teste de sensibilidade elétrico (Fabricante Analytic Technology, USA), e o tempo de duração em tecidos moles foi relatado pelo voluntário. Os resultados obtidos revelaram diferenças estatisticamente significantes (p < 0,05) em relação à adição do vasoconstritor, quanto à duração da anestesia pulpar (p = 0,0004) e a duração em tecidos moles (p = 0,0019), porém, com relação ao período de latência, não houve diferença estatisticamente significante (p = 0,6547). Concluiu-se que ambas as soluções foram eficazes na perda da sensibilidade dos tecidos duros e moles e a adição de epinefrina 1:200.000 prolongou o tempo de duração do cloridrato de levobupivacaína 0,5%.
Palavras-chave
Levobupivacaína, teste elétrico, vasoconstritor
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 volunteer 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, USA) 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 tissues and the addition of 1:200.000 epinephrine prolonged the duration of anesthesia.
Keywords
Levobupivacaine, eletric pulp tester, vasoconstrictor
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