背景：光固化复合树脂性能好，色泽美观持久，具有一定的的抗压强度，因此被广泛应用于口腔修复，但目前关于其修复成人正畸牙冠缺损的报道相对较少。 目的：探讨光固化复合树脂修复成人正畸牙冠缺损的可行性。 方法：纳入300例成人正畸牙冠缺损患者，其中男160例，女140例，年龄16-41岁，均实施光固化复合树脂充填修复。修复结束后随访36个月，了解修复大体外观效果、临床修复效果及不良反应发生情况。 结果与结论：①经修复，患者咬颌关系正常，光固化树脂冠十分稳固，外观与邻牙对侧同名牙对称，无叩痛，X射线片检查根尖无阴影；②随访36个月，300例患者中，修复成功268例，其余32例出现脱落，修复成功率为89.33%；300例患者中，对修复效果表示满意的有271例，满意率为90.33%，300例患者均未出现严重不良反应；③结果表明：光固化复合树脂修复成人正畸牙冠缺损的成功率及患者满意率高，且无严重不良反应。%BACKGROUND:Because ofgood performance, beautiful and permanent color, andcertain compressive strength,light-cured composite resinhas beenwidely used in dental restoration. Butthere are less reports about its usage inadultcrown restoration during orthodontic treatment. OBJECTIVE:To explore the feasibility of light-cured composite resin in the adult crownres to rationduring orthodontic treatment. METHODS:300 adultcases of crown defectss cheduled for orthodontic treatmentwere enroled, including 160 males and 140 females, aged from16 to 41years. Al the crown defects were filed with light-cured compositeresins. After 36-month folow-up, the gross appearances of repaired teeth,repairingeffect and adverse reactions were statisticaly recorded and analyzed. RESULTS AND CONCLUSION:Afterrestoration, patients exhibited normal occlusion,and thefiled crowns were fixed stably and firmlywhose appearance was symmetric withthat of thecontralateral isonym tooth of the adjacenttooth.In addition, patients complainedofno percussion pain, and no apical shade was shownby X-ray examination.At the end of the folow-up,crown restoration was successful in268of 300 cases,with a success rate of 89.33%, andthe filed crowns fel out inthe other32cases;271of 300 cases were satisfied with therepairingeffect, and the satisfaction rate was 90.33%. Besides, there were no serious adverse reactions in al the patients. These results show that light-cured composite resinfor adultcrown restoration duringor thodontict reatmen to btains ahigherrepair success rate and satisfaction rate,withno serious adverse reactions.
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