纤维桩核修复不同牙本质肩领前牙的临床研究

Clinical study on the effect of different ferrule on fiber post core restoration therapy of anterior teeth

目的：研究牙本质肩领对不同缺损前牙桩核修复后疗效的影响。方法：选取前牙残冠残根患者58例，共计71颗患牙。所有病例经预成纤维桩核修复后，根据剩余牙体组织量在残根颈部制备一定高度的牙本质肩领，分为龈下组、0～2mm组、大于2mm组，给予纤维桩冠烤瓷修复。随访观察3年，统计各组残根的治疗成功率并进行统计学分析。结果：龈下组、0～2mm组、大于2mm组的成功率分别为68.2%、92.3%和100%。经χ2检验，龈下组与0～2mm组，龈下组与大于2mm组相比治疗成功率具有显著性差异（P＜0.05）；0～2mm组与大于2mm组相比无统计学意义（P＞0.05）。结论：牙本质肩领可以提高前牙桩核系统的修复效果。

Objective To study the effect of ferrule length on the the survival of residual crown restorsd with prefabricated fiber post and core system. Methods 58 patients with 72 residual crown and roots of anterior tooth were selected. After all patients underwent prefabricated carbon fiber post-core therapy, dentin shoulder collars with different heights were installed at the residual roots of tooth according to the amount of left tissues. The patients were divided into subgingival group. 0-2mm group and greater than 2mm group, and were given fiber post with porcelain crown therapy. 3-year follow-up survey was conducted to summarize success rate of the treatment of residual roots of each group and conduct statistical analysis. Results The success rates of subgingival group, 0-2mm group and greater than 2mm group were 68.2%, 92.3% and 100%, respectively. χ2 test was adopted in this research, finding that gingival group with 0-2mm group, and gingival group with greater than 2mm group had significant difference (P <0.05) in success rate; 0-2mm group and greater than 2mm group showed no statistical significance (P >0.05). Conclusion The ferrule can enhance the restoration effect of the post core system of anterior teeth.