预防性使用MTA控制外伤恒前牙牙根外吸收的临床疗效观察

Observation of effect of using mineral trioxide aggregate to prevent external resorption in traumatic permanent anterior teeth

目的:探讨牙根发育完成的外伤冠折露髓恒牙使用MTA预防性控制根吸收的临床疗效。方法:对109颗牙根发育完成的冠折露髓恒牙随机分为预防性使用MTA治疗组(55颗)和常规治疗组(54颗),完成根管治疗。2年后,通过临床症状及X线根尖片判断疗效。结果:预防性使用MTA治疗组控制根吸收成功率为98.07%,对照组成功率为86.00%,两组间比较差异有统计学意义(P<0.05)。结论:外伤恒前牙使用MTA预防性控制根吸收临床疗效好,值得临床应用。

Objective：To evaluate the effect of using mineral trioxide aggregate to prevent external resorption in traumatic permanent anterior teeth. Method： 55 traumatic permanent anterior teeth with completed apices referred to our hospital for root canal treatment received an procedure with MTA, and 54 traumatic permanent anterior teeth was filled with gutta-fiow. Patients were recalled after 2 years to evaluate the effect. Result： The success rate of MTA group was 98.07 % and control group was 86.00 %. There was significant different in two groups （P 〈 0.05）. Conclusion： The effect of MTA in nreventing external resorntion of traumatic nermanent anterior teeth is effective, MTA is worth clinical annlvinm