Abstract:Objective To observe the clinical effect of Ropivacaine on extraction of mandibular impacted tooth, and to compare it with Mepivacaine hydrochloride and Lidocaine. Methods A total of 78 cases who required removal of mandibular impacted wisdom teeth were selected. They were randomly divided into group A, group B and group C. For local anesthesia, 27 cases in the group A received 0.5% Ropivacaine hydrochloride and epinephrine (5 ml), 25 cases in the group B received 2% Mepivacaine hydrochloride and adrenaline (1.8 ml) and 26 cases in the group C received 2% Lidocaine hydrochloride and adrenaline (5 ml). The onset time of anesthesia effect, anesthetic duration, intraoperative and postoperative pain assessment and extraction time were observed in the three groups. Data analysis was carried out with SPSS 19.0 software package. Results There were significant differences in the onset time of anesthesia effect, anesthetic duration and postoperative pain degree between the groups A and C (P < 0.01); but there was significant difference only in anesthestic duration between the groups A and B (P < 0.01). There were no significant differences in the intraoperative pain among the three groups (P > 0.05). There was no significant difference in extraction time, use of the flap, bone removal, or degree of postoperative pain among the three groups using different anesthetics (P > 0.05). Conclusions Compared with Lidocaine, 0.5% Ropivacaine has the advantages in clinical extraction of mandibular impacted tooth, such as rapid onset time of anesthesia effect, longer anesthetic duration and milder postoperative pain; but it has similar effect with Mepivacaine.