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目的探讨牙冠延长术保留残根的临床治疗效果。方法 62例牙体缺损牙龈下有缺损患者(70颗牙),根据牙根长度的不同将70颗患牙分为甲组和乙组,其中根长>1.5 cm的40颗患牙为甲组,30颗根长1.2~1.5 cm患牙为乙组,患者同时接受牙冠延长术,同时在术后6周后接受常规修复,分别比较两组术前、术后6周及修复后3个月的治疗效果。结果甲组治疗总有效率95%明显高于乙组70%,差异有统计学意义(P<0.05);两组患牙术后6周及修复后3个月牙周探诊深度、龈沟出血指数相较治疗前均有显著提高,差异有统计学意义(P<0.05);两组患牙不同时段探诊深度、龈沟出血指数比较差异无统计学意义(P>0.05)。结论在牙体缺损的残根进行修复时,采用牙冠延长术治疗能够有效保留残根残冠,效果显著,具有显著的使用价值。
Objective To investigate the clinical effect of crown remnant preservation of residual root. Methods Totally 70 teeth were divided into group A and group B according to the length of the root. Twenty-four teeth with a root length> 1.5 cm were Group A, 30 teeth with a root length of 1.2-1.5 cm were treated with Group B, patients underwent crown extension at the same time, and received routine repair 6 weeks after the operation. The preoperative, postoperative 6 and postoperative 3 months Therapeutic effect. Results The total effective rate of group A was 95% higher than that of group B (70%) (P <0.05). The average probing depth of periodontal exploration of the two groups at 6 weeks and 3 months after repair, Bleeding index was significantly higher than before treatment, the difference was statistically significant (P <0.05); two groups of teeth probing depth at different time points, the sulcus bleeding index was no significant difference (P> 0.05). Conclusion When the residual root of tooth defect is repaired, the use of crown extension surgery can effectively retain the residual root crown, the effect is significant, with significant value.