三氧化物多聚体应用于活髓切断术的临床疗效研究

目的评价三氧化物多聚体(MTA)用于活髓切断术的临床效果。方法选取外伤冠折露髓的年轻恒前牙48颗,随机分为2组,每组24颗。氢氧化钙组用氢氧化钙盖髓,MTA组用MTA盖髓,追踪观察3年并进行临床评价。结果MTA组成功22颗,失败2颗,氢氧化钙组成功20颗,失败4颗,2组差异无统计学意义。结论MTA是一种较理想的直接盖髓剂。

Clinical comparing of Pulpotomies Employing Calcium Hydroxide and Trioxide Mineral Aggregate

Objective To compare mineral trioxide aggregate (MTA) with calcium hydroxide[Ca(OH)2] clinically and radiographically as a pulpotomy agent in immature permanent teeth. Methods Forty-eight immature permanent teeth with pulpal exposure due to complicated enamel dentin fractures, were selected. All selected teeth were randomly assigned to control group (conventional Ca(OH)2 pulpotomy performed) and experimental group (MTA pulpotomy used), respectively. An exactly same and standardized was applied in both groups. Patients were recalled for clinical and radiographic evaluations after 3, 6, 12 months and annually thereafter. Results There was no statistically significant difference in the success rate of teeth treated with Ca(OH)2 (83.3%) in comparison to those treated with MTA (91.7%). Conclusion MTA may be useful as a substitute for calcium hydroxide in pulpotomy procedures. Further research, however, is required to clarify this conclusion.