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目的:探讨使用光导桩修复薄弱前牙牙根的临床效果。方法:选择薄弱前牙牙根90例(均已完成根管治疗),分为三组,每组30例,常规根管制备,第一组采用光导桩进行根管重塑,常规制作钴铬合金烤瓷桩冠。第二组采用TR-12车针进行根管重塑,常规制作钴铬合金烤瓷桩冠,第三组不进行根管重塑,直接常规制作钴铬合金烤瓷桩冠。临床比较第一组与第二组间根管重塑的时间,修复18个月复查统计其根折发生情况。结果:采用光导桩进行根管重塑组,临床操作时间少于TR-12车针进行根管重塑组,且两者间差异具有统计学意义(P<0.05)。光导桩和TR-12车针进行根管重塑后根折数量均少于不进行根管重塑组,具有统计学意义(P<0.05)。光导桩重塑组与TR-12车针重塑组两者间差异无统计学意义(P>0.05)。结论:采用光导桩对薄弱前牙牙根进行重塑,提高了根管壁的强度,减少了根折率,且临床操作简便,节省了椅旁操作时间。
Objective: To investigate the clinical effect of using light guide post to repair the weak tooth root. Methods: Totally 90 cases of weakened anterior tooth root were selected and divided into three groups, 30 cases in each group. Conventional root canal preparation was performed. In the first group, root canal remodeling was carried out with light guide post. Cobalt-chromium alloy Porcelain post crown. The second group used TR-12 needles for root canal remodeling, conventional production of cobalt-chromium alloy porcelain post crown, the third group without root canal remodeling, direct conventional production of cobalt-chromium alloy post crown. Clinical comparison between the first group and the second group of root canal remodeling time, repair 18 months to review the statistics of the occurrence of root fracture. Results: The root canal remodeling group with light guide posts had less clinical operation time than the TR-12 needle for root canal remodeling group, and the difference was statistically significant (P <0.05). The number of root fracture of the guide post and the TR-12 needle was less than that of the root canal remodeling group (P <0.05). There was no significant difference between the light guide pile remodeling group and TR-12 needle remodeling group (P> 0.05). CONCLUSION: The light guide post is used to remodel the weak tooth root, which improves the strength of the root canal wall and reduces the root flexion rate. The clinical operation is simple and the chair side operation time is saved.