正畸牵引与烤瓷修复前牙龈下断根的应用效果分析

Effect analysis of Orthodontic traction and porcelain in the treatment of anterior teeth subgingival quit

目的 探讨正畸牵引后烤瓷修复前牙龈下断根的效果.方法 选择前牙断根至龈下的患者63例,采用随机数字表法分为观察组和对照组,对照组应用常规处理方法,观察组患者采用正畸牵引与烤瓷修复的方法.比较两组治疗有效率及一般治疗情况.结果 观察组治愈12例,有效17例,无效2例,总有效率为93.55％ （29/31）；对照组治愈9例,有效14例,无效9例,总有效率为71.88％ （23/32）.观察组治疗有效率显著高于对照组（x2=5.1323,P=0.0235）.观察组患齿松动度、牙龈情况、牙周状况及骨质吸收的治疗有效率分别为93.55％、93.55％、100.00％和96.77％,均显著高于对照组（71.88％、68.75％、71.88％、75.00％）（均P＜0.05）.两组烤瓷冠固位情况差异无统计学意义（P＞0.05）.结论 正畸牵引后烤瓷修复对前牙龈下断根的治疗具有良好的效果.

Objective To investigate the effect of Orthodontic traction and porcelain in the treatment of ante- rior teeth subgingival quit. Methods 63 patients with anterior teeth subgingival quit were randomly assigned into ob- servation group and control group, the control group were treated with conventional processing methods, the observa- tion group were treated with orthodontic traction and porcelain repair method, the efficient and general treatment were compm＇ed. Results In the observation group, there were 12 cases cured, 17 cases effective, 2 cases ineffective, the total effective rate was 93.55% （29/31） ; in the control group, tilere were 9 cases cured, 14 cases effective, 9 cases ineffctive, the total effective rate was 71.88% （23/32）. There were significandy difference between two groups （ X2 = 5. 1323, P = 0. 0235 ）. Tooth loose degrees, gingival condition and periodontal status and treatment of bone re- sorption rates of the observation group were 93.55%, 93.55% , 100.00% and 96.77% , significantly higher than the control（71.88%, 68.75% , 71.88% , 75.00% ） , the differences were statistically significant （all P 〈0.05）. Crown retention between the two groups showed no significant difference between cases （ P 〉 0.05 ）. Conclusion orthodontictraction has good effect in the treatment of former porcelain subgingival root pruning.