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  • Title: Can local anesthesia with ropivacaine provide postoperative analgesia in extraction of impacted mandibular third molars? A randomized clinical trial.
    Author: Amorim KS, Gercina AC, Ramiro FMS, Medeiros LA, de Araújo JSM, Groppo FC, Souza LMA.
    Journal: Oral Surg Oral Med Oral Pathol Oral Radiol; 2021 May; 131(5):512-518. PubMed ID: 33223455.
    Abstract:
    OBJECTIVE: The aim of this study was to compare the local anesthesia efficacy of ropivacaine 0.75% compared to lidocaine 2% with 1:100,000 epinephrine for postoperative analgesia following extraction of impacted mandibular third molars. STUDY DESIGN: In this randomized, double-blind crossover clinical trial, 30 participants underwent surgical removal of bilateral impacted mandibular third molars under local anesthesia using ropivacaine 0.75% or lidocaine 2% with 1:100,000 epinephrine. The pain was recorded on a visual analog scale at 4, 8, 12, 24, and 48 h postoperatively. The use of analgesics and the presence of adverse effects were recorded. RESULTS: The duration of soft tissue anesthesia in the ropivacaine group was significantly longer than that in the lidocaine group. The lidocaine group recorded significantly higher visual analog scale scores at all postoperative time intervals, except in the final 48-h period. Analgesic use was higher in the lidocaine group. Rescue medication was used by 2 patients in each group (6.7%). Significantly more postoperative bleeding was seen in the ropivacaine group. CONCLUSION: Ropivacaine 0.75% injection before the surgical procedure may be associated with preventive analgesia for extraction of impacted mandibular third molars.
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