牙髓血运重建术和氢氧化钙用于年轻恒牙活髓切断的临床观察

目的牙髓血运重建术、氢氧化钙治疗行活髓切断术的年轻恒牙的临床疗效并进行对比分析。方法选取98例（98颗患牙）7~16岁行下颌前磨牙活髓切断术的患儿作为研究对象，按照随机数字表法平均分为观察组（49例，行牙髓血运重建术）和对照组（49例，行氢氧化钙根尖诱导成形术治疗），完全治疗6个月后， 对比分析两组的临床疗效。结果观察组总有效率（95.92%）高于对照组（69.39%），不良反应发生率（8.16%）低于对照组（34.68%），差异有统计学意义（P＜0.05）；观察组患牙根管壁厚度（ 2.54±0.32） mm及牙体长度（21.50±1.70） mm分别高于对照组牙根管壁厚度（2.21±0.31） mm及牙体长度（20.80±3.50） mm， 差异有统计学意义（ P＜0.05）。结论牙髓血运重建术比氢氧化钙糊剂在年轻恒牙活髓切断术治疗中更具优势，操作简便，可有效提高治疗的成功率、降低并发症发生率。

Clinical observation of pulp revascularization and calcium hydroxide for pulpal cut of young permanent teeth

ObjectiveTo compare the clinical effects of pulp revascularization and calcium hydroxide in the treatment of young permanent teeth with pulpotomy, and thento explore the advantages of pulp revascularization in the treatment of young permanent teeth with unexpected pulp exposure. MethodsNinety-eight patients(98 teeth) from 7 to 16 years old who underwent pulpotomy of mandibular premolars were divided into two groups according to random number table method. The two groups included observation group(49 patients underwent pulp revascularization) and control group(49 patients underwent calcium hydroxide apexification). After 6 months of complete treatment, the clinical effects of two groups were compared and analyzed. ResultsThe total effective rate of the observation group(95.92%) was significantly higher than that of the control group(69.39%). The incidence of adverse reactions of the observation group(8.16%) was lower than that of the control group (34.68%) with statistical significance(P＜0.05),and the thickness of the root canal wall(2.54±0.32) mm and the length of the teeth（21.50±1.70） mm in the observation group were higher than the root canal wall（2.21±0.31) mm and the length of teeth（20.80±3.50） mm respectively. The difference was statistically significant(P＜0.05). ConclusionPulp revascularization is superior to calcium hydroxide paste in pulpotomy for young permanent teeth. It can improve the success rate significantly, promote the root development of young permanent teeth effectively, and make clinical treatment more efficient.