Atividade anestesica da bupivacaina e ropivacaina em bloqueio do nervo alveolar inferior para cirurgias de terceiros molares inclusos

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

The advantages of using long-acting local anesthetics in oral surgery have been demonstrated in a limited number of clinical studies. The purpose of this double-blind and cross-over study, was to evaluate and compare the efficacy of 2 local anesthetics - bupivacaine and ropivacaine - in the concentration of 0.5% containing 1:200,000 epinephrine for inferior alveolar nerve block. Thirty healthy individuals participated in the study on a voluntary basis. All subjects received bupivacaine and ropivacaine injections (3,6 ml), one anesthetic for each side of the mandible, for surgical removal of impacted mandibular third molar teeth, on separate occasions. The onset time and duration of pulpal anesthesia were assessed by electric pulp tester in the inferior canines, second pre-molars and second molars; no response from the subject to the maximum output (80 reading) of the pulp testes was used as the criterion for pulpal anesthesia; the onset time and duration of lip anesthesia were also assessed. Injection discomfort was assessed by Visual Analogue Scale. The results were evaluated by using Student-t test (p<0.05). No differences were found between the solutions, except for a lower onset of lip anesthesia (p=0,016) with the use of ropivacaine. Under the conditions of this study bupivacaine and ropivacaine showed similar anesthetic efficacy. This leads to the conclusion that ropivacaine can be useful as a long acting anesthetic for inferior alveolar nerve block and could replace bupivacaine in oral surgery due to the decreased toxicity related in the literature

ASSUNTO(S)

anestesia em odontologia ropivacaina odontologia operatoria ropivacaine bupivacaine analgesia anestesiologia dentes - extração bupivacaina local anesthetics terceiros molares - anestesia local

ACESSO AO ARTIGO

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