MTA修复在年轻恒牙活髓保存治疗术中的应用效果

目的 分析三氧化矿物聚合物（MTA）对年轻恒牙活髓保存术的修复效果。方法 选择我院2020年1月-2021年1月收治的恒牙活髓保存术年轻患者84例为研究对象，随机分为A、B两组，各42例。A组予以MTA修复治疗，B组予以根尖诱导成形术治疗，比较两组总有效率、根尖周指数（PAI）、牙髓干细胞（DPSCs）吸光度、牙髓活力测试正常比率与不良反应率。结果 A组患者的总有效率高于B组，差异有统计学意义（P＜0.05）；A组PAI以1级为主，B组以2级为主，两组PAI 1级与2级比例比较，差异有统计学意义（P＜0.05）；A组不同时间的DPSCs吸光度大于B组，牙髓活力测试的正常比率高于B组，不良反应总发生率低于B组，差异有统计学意义（P＜0.05）。结论 MTA修复可以保护牙齿根尖周功能，改善牙髓活力，具有较高的修复安全性和有效性。

The Application Effect of MA Repair in the Preservation of Activated Pulp of Young Permanent Teeth

Objective To analyze the restoration effect of mineral trioxide aggregate (MTA) on preservation of activated pulp of young permanent teeth. Methods A total of 84 young patients with permanent tooth pulp preservation admitted to our hospital from January 2020 to January 2021 were selected as the research objects and randomly divided into two groups, with 42 cases in each group. Group A was treated with MTA repair, and group B was treated with apexification.The total effectiverate, periapical index (PAI), dental pulp stem cell (DPSCs) absorbance, normal ratio of pulp vitality test and adverse reaction rate were compared between the two groups. Results The total effectiverate of group A was higher than that of group B, and the differencewas statistically significant(P<0.05). The PAI of group A was mainly grade 1, and that of group B was mainly grade 2, there was significantdifferencein the proportion of PAI grade 1 and grade 2 between the two groups (P<0.05). The absorbance of DPSCs at different time points in groupA was higher than that in group B, the normal ratio of pulp vitality test was higher than that in group B, and the total incidence of adverse reactions was lower than that in group B, and the differencewas statistically significant(P<0.05). Conclusion MTA repair can protect the periapical function of teeth and improve the pulp vitality, which has high repair safety and effectiveness