A comparative study of apically extruded debris and irrigant exudation by using three kinds of nickel-titanium rotary instruments

doi:10.3969/j.issn.2095-4344.2015.03.022

Abstract

Abstract:

BACKGROUND: Apically extruded debris and irrigant exudation can be produced during the root canal preparation, which lead to severe postoperative pain. Studies have shown that nickel-titanium rotary instruments used during the root canal preparation can generate less apical debris than hand instruments.

OBJECTIVE: To compare three commonly used nickel-titanium rotary instruments, ProTaper, ProFile, K3, and hand instrument, K-file, in the root canal preparation and to detect the amount of apically extruded debris and irrigant exudation.

METHODS: Forty extracted teeth with simple root were randomly divided into four groups, and ProTaper, ProFile, K3, and K-file were respectively used for root canal preparation. Then, the apical debris and irrigants generated were collected and weighed using an electronic scale.

RESULTS AND CONCLUSION: The amount of apically extruded debris and exuded irrigants generated by the K-file method was larger than that using the other methods (P < 0.05), while the amount of apically extruded debris and exuded irrigants was the least using the K3 method (P < 0.05). There was no difference in the apically extruded debris between the three types of Ni-Ti rotary instruments (P > 0.05). The amount of exuded irrigants generated by the K3 instrument was significantly lower than that generated by the ProTaper and ProFile (P < 0.05), but there was no difference between the latter two instruments (P > 0.05). In the group of K-file, the amount of exuded irrigants was positively correlated to the amount of the apically extruded debris (P < 0.05); however, there was no significant correlation in the three kinds of nickel-titanium rotary instruments. These findings indicate that the Ni-Ti instruments are preferred for root canal preparation.

中国组织工程研究杂志出版内容重点：生物材料；骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性；组织工程

全文链接：

Key words: Root Canal Preparation, Tooth Apex, Root Canal Irrigants

CLC Number:

R318

Wang Li-na, Liu Qi-cheng, Lin Zhi-xin, Shi Chun, Niu Wei-dong. A comparative study of apically extruded debris and irrigant exudation by using three kinds of nickel-titanium rotary instruments[J]. Chinese Journal of Tissue Engineering Research, 2015, 19(3): 450-454.

Figures/Tables 2

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