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目的:观察通过正畸和牙周治疗方法,使龈下前牙残根经桩核冠达到保存性修复的临床效果。方法:选择26例单颗前牙断端位于龈下3 mm以内的残根,经完善的根管治疗后2周,采用正畸牵引和牙周治疗,牵出龈下残根于龈上,保持患牙及牙龈稳定3个月后,再行桩核冠修复,对修复后的患牙进行2年内的跟踪随访。结果:26例龈下残根经桩核冠修复后,24例修复体边缘密合,无松动,牙龈无炎症。X线片示根尖无阴影,患者对修复效果满意。1例患牙在修复8个月后,出现桩核冠脱落,1例患牙修复14个月时出现牙颈部牙襞裂,修复成功率92.3%。结论:正畸联合牙周治疗对龈下3 mm以内的前牙残根可成功保留,以进行桩核冠固定修复。
OBJECTIVE: To observe the clinical effect of orthodontic and periodontal treatment on the preservation of the residual root of the subgingival anterior tooth via the post-core crown. Methods: Twenty-six single stumps with subgingival anterior end located within 3 mm of subgingival margin were selected. Two weeks after perfecting root canal treatment, orthodontic traction and periodontal treatment were selected. Maintain the teeth and gums stable for 3 months, and then pile post crown restoration, repair of the affected teeth within 2 years of follow-up. Results: Twenty-six cases of subgingival residual roots were restored with post-core and crown. The edges of 24 cases of prosthesis were close and no looseness was found. There was no inflammation in the gingiva. X-ray showed apical no shadow, the patient satisfaction with the repair. One patient suffered from dental crown decay after 8 months of repair, and one patient suffered from dental crowning at the 14th month of repair. The success rate of repair was 92.3%. Conclusion: Orthodontics combined with periodontal treatment can successfully preserve the residual roots of the anterior teeth within 3 mm of the subgingival for the fixation of post-core crown.