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目的:观察在年轻恒牙活髓切断术中应用矿化三氧化复合物(MTA)作为盖髓剂的临床疗效。方法:选择6.5～12.5岁患者的32颗深龋去腐露髓和意外露髓的年轻恒磨牙,平均分为MTA治疗组和光固化氢氧化钙对照组,分别用MTA和光固化氢氧化钙作直接盖髓剂进行活髓切断术治疗。18个月后进行临床评价,观察MTA和光固化氢氧化钙盖髓后牙齿的临床症状、牙髓活力、牙本质桥形成及根尖孔形成情况。结果:应用MTA直接盖髓的患牙18月后修复性牙本质桥形成,X线片提示根尖部喇叭口闭合,根尖暗影消失,牙髓保持活力,牙髓存活率为93.75%,显著高于对照组的81.25%,两组比较有统计学差异(P<0.05)。结论:MTA在年轻恒牙活髓保存治疗中是一种较理想的盖髓剂。
Objective: To observe the clinical efficacy of mineralized trioxide complex (MTA) as a pulp capping agent in young permanent pulp live pulpotomy. Methods: Thirty-two young molars with deciduous caries of deciduous caries and uninvolved exposed pulp from 6.5 to 12.5 years old were divided equally into MTA group and light-cured calcium hydroxide control group. MTA and light-cured calcium hydroxide were used as the direct Capping agent for pulpotomy treatment. Eighteen months later, clinical evaluation was carried out to observe the clinical symptoms, pulp vitality, dentin bridge formation and apical foramen formation of MTA and photodynamic capping capping. Results: The impacted dentin bridge formed by MTA direct pulp capping was formed 18 months later. The X-ray film showed that the apical foramen was closed, the apical shadow disappeared and the dental pulp remained viable. The dental pulp survival rate was 93.75% Higher than 81.25% of the control group, there was a significant difference between the two groups (P <0.05). Conclusions: MTA is an ideal capping agent in the preservation of young permanent teeth.