使用镍钛合金与不锈钢根管扩大针进行根尖微渗漏的比较。
Comparison of apical microleakage using Ni-Ti with stainless steel finger spreaders.
作者信息
Shahi Shahriar, Shakouie Sahar, Rahimi Saeed, Yavari Hamid Reza, Mohammadi Narmin, Abdolrahimi Majid
机构信息
Department of Endodontics, Dental School, Tabriz University of Medical Sciences, Tabriz, Iran.
出版信息
Iran Endod J. 2009 Fall;4(4):149-51. Epub 2009 Oct 10.
INTRODUCTION
The purpose of this in vitro study was to compare apical microleakage after obturation with Nickel-Titanium (NiTi) compared to Stainless Steel (SS) finger spreaders.
MATERIALS AND METHODS
Eighty straight single-rooted human teeth were instrumented using step-back technique. The specimens were randomly divided into four groups. The two experimental groups (n=30) and the negative control group (n=10) were obturated by lateral condensation technique with Ariadent gutta-percha and AH26 sealer. The roots in the positive control group (n=10) were instrumented but not obturated. In one group, SS and in another group NiTi spreaders were used. Microleakage evaluation was conducted using dye penetration method t-test was used for statistical analysis.
RESULTS
The results showed statistically significant differences between NiTi and SS groups (P=0.022), with the greatest dye penetration in SS group and the least in NiTi group.
CONCLUSION
According to the results of the present study using NiTi spreader decrease apical microleakage in endodontically treated teeth. [Iranian Endodontic Journal 2009;4(4):149-51].
引言
本体外研究的目的是比较与不锈钢（SS）根管充填器相比，使用镍钛（NiTi）根管充填器进行根管充填后的根尖微渗漏情况。
材料与方法
采用逐步后退技术对80颗直单根人牙进行预备。将标本随机分为四组。两个试验组（n = 30）和阴性对照组（n = 10）采用侧向加压技术，用Ariadent牙胶尖和AH26封闭剂进行根管充填。阳性对照组（n = 10）的牙根进行了预备但未进行充填。一组使用不锈钢根管充填器，另一组使用镍钛根管充填器。采用染料渗透法进行微渗漏评估，t检验用于统计分析。
结果
结果显示镍钛组和不锈钢组之间存在统计学显著差异（P = 0.022），不锈钢组的染料渗透最大，镍钛组最小。
结论
根据本研究结果，使用镍钛根管充填器可减少根管治疗后牙齿的根尖微渗漏。[《伊朗牙髓病杂志》2009年；4（4）：149 - 51]
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