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目的观察年轻恒前牙断冠再接的临床疗效。方法选取23颗年轻恒前牙冠折的病例,采用日本可乐丽牙本质粘合处理剂、可乐丽粘合剂、德国登士柏TPH3纳米复合树脂材料粘接自体断冠,按粘接模式分为两组,试验组12颗牙用内部倒凹加舌侧排溢道和唇侧洞斜面制备患牙和断冠粘接,对照组11颗患牙采用不制备患牙直接粘接。通过两年的观察,比较临床治疗效果。结果两年后试验组12颗断冠再接脱落2颗,对照组11颗断冠再接脱落5颗。两组之间有显著性差异。结论运用内部倒凹加舌侧排溢道和唇侧洞斜面制备患牙及断冠的方法粘接断冠是适宜治疗恒前牙冠折的简便的过渡性修复方法。
Objective To observe the clinical effect of reconnecting young permanent anterior teeth. Methods Twenty-three young cases of permanent crown fractures were selected and treated with Coke’s dentin adhesive treatment agent, Kuraray adhesive and Germany’s Duck’s TPH3 nanocomposite resin, For the two groups, the experimental group of 12 teeth with internal concave plus lingual side overflow and labial hole oblique tooth preparation and broken crown adhesion, the control group of 11 teeth with no teeth prepared by direct bonding. Through two years of observation, compare the clinical treatment effect. Results After two years, the experimental group of 12 broken crown off two fall again, the control group of 11 broken crown then fall off 5. There was a significant difference between the two groups. Conclusions It is a simple and convenient method of transitional repair for the treatment of the anterior crown fractures by using the method of internal recessing plus lingual side-row spill and lip-side slope to prepare the affected tooth and the broken crown.