MTA用于龋源性露髓年轻恒牙部分活髓切断治疗的初步研究

目的：应用三氧化矿化聚合物（MTA）对龋源性露髓的年轻恒牙进行部分活髓切断术治疗并评价临床效果。方法：采用MTA作活髓保存剂,对26例29颗因龋露髓的年轻恒磨牙采用部分活髓切断术治疗,随访18个月,评价其疗效。结果：MTA部分活髓切断术治疗龋源性露髓年轻恒磨牙成功率为96.55%,67.85%治疗成功患牙有牙本质桥形成。结论：部分活髓切断术是治疗龋源性露髓年轻恒牙的有效方法,MTA是可供选用的较为理想的活髓保存剂。

Preliminary Study of Mineral Trioxide Aggregate for Partial Pulpotomy in Cariously Exposure Pulps of Young Permanent Molars

Objective： To evaluate the preliminary clinical outcome of mineral trioxide aggregate for partial pulpotomy on young permanent molars with carious pulp expose.Methods： 29 cariously exposured young permanent molars of 26 patients were treated with a partial pulpotomy technique,using MTA as a pulp dressing agent.Patients were scheduled for follow-up after 2 week,1,3,6,12,18 months to undergo clinical and radiological examination. Results： 28 of the treated teeth did not show any clinical or radiographic signs of failure during the follow - up period. One teeth developed pulp neocrosis due to the loss of restoration. The success rate of this treatment was 96.55%. Among the successfully treated teeth,67.85 % of the pulp adjacent to the MTA dressing exhibited dentin bridges. Conclusion： Partial pulpotomy may be a successful and effective treatment for cariously exposed young permanent molars and MTA may be a suitable dressing agent for it.