摘要目的 对比无机三氧化物聚合体(MTA)和CH糊剂在根尖诱导成形术中的临床疗效.方法 将120颗牙根未完全发育完成的年轻恒牙随机平分为两组,用无机三氧化物聚合体(MTA)和CH糊剂,分别进行根尖诱导成形术,术后3个月复诊一次,随访2年,对比观察临床疗效.结果 MTA组平均就诊次数3.1次,平均治疗周期14.1 d,根尖诱导成功率96.7%;CH组平均就诊次数7.2次,平均治疗周期363.2 d,根尖诱导成功率71.7%,两组根尖诱导成功率比较有统计学差异(P＜0.01).结论 MTA进行根尖诱导成形术,周期短,疗效确切,成功率高,有望替代传统氢氧化钙诱导制剂.

abstractsObjective To compare the clinical efficacy of apexification used mineral trioxide aggregate (MTA)or calcium hydroxide (CH). Methods 120 teeth with open apices were randomly divided into two groups. One group was treated with MTA and the other group was treated with CH. All the patients were observed the clinical reaction every 3 months after treatment and followed up for 2 years. Results The average visit times were 3.1 in MTA group and 7.2 in CH group. The average period was 14.1 days in MTA group and 363.2 days in CH group. After 2 years, the rate of successful apex closure in MTA group(96.7% )was better than that in CH group(71.7% ) ,and it was significanfly different ( P ＜ 0.01 ). Conclusion MTA can abbreviate therapy period,improve the rate of success in apexfication and treat teeth with open apices more effectively. It is a suitable replacement for calcium hydroxide for the apexification procedure.