牙髓血运重建术治疗年轻恒牙根尖周炎的临床疗效

A clinical study on the revascularization of immature permanent teeth with apical periodontitis

目的:观察牙髓血运重建术治疗年轻恒牙根尖周炎的临床疗效。方法:纳入因牙外伤或畸形中央尖折断致急、慢性根尖周炎的8～13岁患儿9例共10个恒牙,进行牙髓血运重建治疗。术后每3～6个月进行临床和影像学检查。结果:术后复查期6～24个月,观察到3种类型的愈合方式:(1)有7个牙根管长度和厚度增加,牙根继续发育或根尖孔闭合;(2)有2个牙根管内出现钙化;(3)有1个牙根尖周病变愈合但根尖孔未闭合。结论:牙髓血运重建术能够促进年轻恒牙根尖周炎的愈合及牙根继续发育,但硬组织在根管壁上过度沉积可能导致根管内钙化。

AIM ： To evaluate the clinical effects of the pulp revascularization for immature teeth with apical periodontitis. METHODS： 10 immature teeth with apical periodontitis in 9 patients（8~13 years old） were treated with pulp revascularization. The clinical examinations and X-ray examination were performed after treatment. The patients were followed up for 6-24 months. RESULTS： 3 types of responses were observed： ①Increased thickening of the canal walls and continued root maturation; ②Severe calcification in the canal; ③Apical periodontitis was cured and the root canal with an open apex. CONCLUSION： The pulp revascularization is effective for managing immature permanent teeth with apical periodontitis. Excessive deposition of hard tissue might cause calcification in canal space.