三氧化矿物凝聚体用于乳牙深龋活髓切断的疗效观察

目的观察三氧化矿物凝聚体（mineral trioxide aggregate，MTA）和甲醛甲酚糊剂（formocresol，FC）对乳牙进行活髓切断术治疗的临床疗效。方法选取深龋未露髓乳牙进行活髓切断术，随机分为两组：MTA组64颗，采用MTA盖髓；FC组70颗，采用FC盖髓。在术后3、6个月、1年复诊拍摄X线片并观察临床疗效。结果MTA组成功60颗，失败4颗。FC组成功64颗，失败6颗，两组结果比较，差异无统计学意义。结论MTA是一种有效的乳牙活髓切断药物，在临床上能够广泛应用。

Clinical Effect of Pulpotomy Employing Mineral Trioxide Aggregate on Primary Teeth with Deep Caries

Objective To compare mineral trioxide aggregate （MTA）with formocresol （FC）clinically as a pulpotomy agent in primary teeth with deep caries. Methods One hundred and thirty-four primary teeth were selected. Selected teeth were randomly assigned to control group（conventional FC pulpotomy were performed）and experimental group（MTA pulpotomy were performed）respectively. Patients were recalled for clinical evaluations after 3,6,12months. Results There was no statistically significant difference between the success rate of teeth treated with FC（91.43%）and those treated with MTA（93.75%）. Conclusion Currently available evidence suggest that MTA as a pulpotomy medicament did not have a higher clinical success compared with FC. Both MTA and FC are effective pulpotomy agents for primary teeth with deep caries.