Objective To observe the clinical effect of young permanent anterior tooth restoration by frag-ment reattachment and resin build up. Methods A total of 176 young permanent anterior teeth were selected and di-vided into Group A and B, in which the subjects were treated with reattachment and rebuilt-up by the composite resin, respectively. And all cases were assessed clinically by 2 years of follow up. Results The success rates in Group A and B were 96.5%and 93.3%after three months of surgery, 89.5%and 86.7%after one year of surgery, 86.0%and 83.3% after two years of surgery respectively with no significant difference. The difference of complication rate in Group A and B was not significant. The score of adhesiveness in Group A was higher than Group B, but the scores of shape and color were lower. Conclusion The fragment reattachment and the composite resin build-up curative effect are reliable. The beautiful and satisfaction evaluation of the fragment reattachment are better than those of composite resin build-up.%目的：比较年轻恒牙冠折断端再接与复合树脂直接修复的临床疗效。方法选择176颗冠折年轻恒牙，86颗用断端再接修复，90颗用复合树脂修复冠缺损。对两种修复效果的满意度作问卷调查和2年临床疗效观察。结果断端再接修复组患者在术后3个月、1年、2年成功率分别为96.5%、89.5%和86.0%，而复合树脂修复组患者在术后3个月、1年、2年成功率分别为93.3%、86.7%和83.3%，两者差异均无统计学意义(P>0.05)。两组治疗方法并发症发生率差异无统计学意义。复合树脂修复组密合性能评分明显高于断端再接组，但外形和颜色评分明显低于断端再接组。结论前牙断端再接修复和光固化复合树脂修复年轻恒牙冠折疗效可靠，但美观满意评价断端再接修复优于复合树脂修复。
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