TF镍钛锉在老年人磨牙根管治疗中的临床疗效评价

目的 评价TF镍钛锉（下称TF锉）在老年人磨牙根管治疗中的临床疗效.方法 临床选取老年人磨牙146颗,随机分为试验组和对照组,每组73颗牙,分别采用TF锉和不锈钢K锉进行根管预备,比较两组在根管预备时间、根管填充效果和术后疼痛等方面的差异.结果 老年人磨牙根管预备平均时间：试验组4 min 5 s,明显少于对照组10min 40s（P＜0.05）；试验组无根管偏移及台阶形成,更好地保持根管的解剖初形,对照组有4例台阶形成；术后疼痛发生率试验组10.9％,明显低于对照组32.8％ （P＜0.05）；根管适充率试验组93.2％明显高于对照组80.8％.结论 应用TF锉预备老年人磨牙根管,能更好地保持根管解剖初形,明显减少术后疼痛发生,省时、省力、安全高效,提高了根充效果.

Evaluation of clinical efficiency of TF nickel titanium file in root canal treatment in elder molars

Objective Evaluate clinical efficiency of TF nickel titanium file in root canal treatment in eider molars. Methods Select 146 elder molars, which were divided into experimental group and control group randomly, 73 molars in each group. TF nickel titanium file were used in experimental group and stainless steel k-file were used in control group to prepare root canal. Time of root canal preparation, filling effect andpostoperative pain was compared between two groups. Results Average root canal preparation time and incidence rate of postoperative pain in experimental groups was significantly reduced compared with the control group （P~0.05）. In experimental group, no root canal deviation or step forming was observed and better anatomical shape of root canal was kept. While in the control group, 4 cases of step forming were observed. Moreover, 93.2% root canals in experimental group are properly filled, significantly higher than that in control group （P〈0.05）. Conclusions Use of TF nickel titanium file in preparing root canal of elder molar is time and labor saving with safety and high efficiency. Also it could keep better anatomical shape of root canal, significantly decrease incidence rate of postoperative pain, and improve filling effect.