Endodontics| Volume 93, ISSUE 4, P469-473, April 2002

A comparison of ropivacaine and lidocaine with epinephrine for intraligamentary anesthesia


      Objective. The purpose of this study was to compare the efficacy of 2 different concentrations of ropivacaine with lidocaine containing epinephrine for intraligamentary anesthesia. Study Design. Ethical approval was obtained and a randomized, double-blind, cross-over volunteer investigation was conducted. Twenty-four volunteers had intraligamentary injections of 2% lidocaine with 1:80,000 epinephrine, 0.75% ropivacaine, or 1% ropivacaine at the upper lateral incisor and lower first bicuspid teeth. The response of the test teeth to electrical pulp testing and the reaction of the gingiva to sharp probing were assessed up to 29 minutes after injection. Injection discomfort and side effects were also recorded. Data were analyzed by using the chi-square test and analysis of variance. Results. Lidocaine with epinephrine was more successful than the ropivacaine solutions in obtaining pulpal anesthesia (chi-square = 12; P <.002) and produced longer-lasting pulpal (F = 21; P <.001) and soft tissue (F = 16; P <.001) anesthesia. Injection discomfort and incidence of side effects were similar between solutions, and none produced serious adverse effects. Conclusion. Lidocaine with epinephrine is more effective than ropivacaine as an intraligamentary anesthetic. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2002;93:469-73)
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