关键词: 超声荡洗, 成人, 根尖诱导成形术, Metapex糊剂, 根管冲洗

Abstract: Objective    To explore the effect of ultrasonic root canal irrigation on the treatment outcome of apexification for adults. Methods    Totally 60 cases of adult patients who underwent apexification in Department of Stomatology，Deyang Stomatological Hospital，from March 2013 to August 2016 were selected for the study. They were randomly divided into a control group and an observation group，with 30 cases in each group. Patients in two groups were given apexification by taking Metapex paste as inductive material after preparing and sterilizing the root canal. The control group was given conventional syringe irrigation，and the observation group was given ultrasonic irrigation. The incidence rate of pain was observed for 3 days after operation to compare clinical efficacy of the two groups. Results    Within 3 days after the operation，the incidence rate of pain in the observation group（36.67%）was higher than that in the observation group（13.33%）；there was a statistically significant difference（χ2 = 4.356，P = 0.037）. In a 2-year follow-up after treatment，the effective rate in the observation group（93.33%）was higher than that in the control group（73.33%），and the difference was also statistically significant（χ2 = 4.32，P = 0.038）. Conclusion    Ultrasonic irrigation in root canal can significantly reduce the postoperative pain in the apexification treatment for adults and improve the treatment effectiveness，which has good clinical efficacy.

Key words: ultrasonic irrigation, adult, apexification, Metapex paste, root canal irrigation