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目的观察牙冠延长术保留残根的临床效果。方法随机抽取2015年1月-2016年1月医院收治的68例因牙折、龋坏等导致牙断面处于龈下的残根残冠70颗牙。将68例患者70颗患牙按照随机数字表法分为试验组与对照组各34例35牙。对照组采用牙龈切除术治疗,试验组采用牙冠延长术治疗。比较2组患者的临床疗效,比较2组患者术前、术后6周、术后3个月龈袋探诊深度、龈沟出血度变化情况。结果治疗后试验组临床有效率为100.0%高于对照组的74.3%;治疗后6周、3个月2组患者龈袋探诊深度、龈沟出血度均较治疗前明显改善,且试验组均优于对照组,差异均有统计学意义(P<0.05)。结论在因牙折、龋坏等导致牙断面处于龈下的残根残冠修复治疗中,牙冠延长术保留和修复残根的效果显著,值得深入研究和推广。
Objective To observe the clinical effect of crown remnant preservation of residual roots. Methods Seventy-eight teeth of 70 cases of residual residual root crown with subdentity in the tooth section were randomly selected from January 2015 to January 2016 in our hospital. Sixty-eight patients (70 teeth) were divided into 34 teeth (35 teeth) in experimental group and control group according to random number table method. The control group was treated with gingival excision, and the experimental group was treated with crown extension. The clinical efficacy of the two groups were compared. The changes of gingival pocket bleeding depth and gingival sulcus bleeding were compared between the two groups before operation, 6 weeks after operation and 3 months after operation. Results After treatment, the clinical effective rate was 100.0% in the experimental group, which was significantly higher than that in the control group (74.3%). The gingival pocket exploration depth and gingival sulcus bleeding were significantly improved in both groups at 6 weeks and 3 months after treatment, All were better than the control group, the differences were statistically significant (P <0.05). Conclusions In the treatment of residual root residual crown due to tooth decay, caries damage and so on, the effect of retaining and repairing the residual root is significant and deserves further study and popularization.