Abstract:Objective To compare the effect of piezosurgery and T-shaped splitting in the extraction of impacted mandibular molars.Methods A total of 122 patients who underwent extraction of impacted mandibular molars in Affiliated Hospital of Chifeng University from January 2018 to December 2021 were selected and divided into research group and control group, with 61 patients in each group. The control group was treated with piezosurgery, and the study group was treated with T-shaped splitting to extract the affected teeth. The operative duration and intraoperative blood loss of the two groups were recorded, and the anxiety in the two groups was observed. The postoperative pain was compared between the two groups, and the incidence of surgery-related complications in the two groups was analyzed.Results There was no significant difference in the operative duration and intraoperative blood loss between the two groups (P > 0.05). The anxiety in the study group was lower than that in the control group (P < 0.05). There was no significant difference in the pain between the two groups of patients on the first day after the operation (P > 0.05). There was no statistical significance in the differences of prostaglandin E2 (PGE2), substance P (SP) and 5-hydroxytryptamine (5-HT) before and 3 days after the operation between two groups (P > 0.05). There was no statistically significant difference in overall incidence of postoperative complications between the two groups (P > 0.05).Conclusions Both piezosurgery and T-shaped splitting achieve satisfactory surgical outcomes for the extraction of impacted mandibular molars. Though the surgical efficacy is comparable between the two approaches, T-shaped splitting is more conducive to relieving the anxiety of patients during the operation.