Journal of Jilin University Medicine Edition ›› 2017, Vol. 43 ›› Issue (01): 62-65.doi: 10.13481/j.1671-587x.20170113

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Comparison between three kinds of reciprocating nickel-titanium instruments in resin simulated canals

WANG Jing, WANG Chengkun, TANG Xiaoli, SUN Ying, ZHOU Yuanyuan, JIAO Shan   

  1. Department of Dental and Endodontics, Stomatology Hospital, Jilin University, Changchun 130021, China
  • Received:2016-06-23 Online:2017-01-28 Published:2017-02-08

Abstract:

Objective: To compare the shaping and cutting capabilities of three kinds of nickel-titanium instruments in resin simulated root canals,and to provide the reference for their clinical application.Methods: A total of 30 simulated resin blocks were randomly divided into Reciproc,One file,and WaveOne groups(n=10).The preparation time,reduction in weight after preparation,the changes in canal curvature and centering capability were measured.Results: The preparation time in WaveOne group was longer than other two groups (P<0.05).The reduction in weight after preparation had no significantly difference in three groups(P>0.05). The changes of canal curvature among the three groups were not significantly different (P>0.05).At the 5 mm point,the centering capabilities in Reciproc and One file groups were significantly better than that in WaveOne group (P<0.05),and the centering capabilities in One file group were significantly better than those in other two groups at the 6 and 7 mm points(P<0.05).Conclusion: WaveOne,Reciproc,and One file can maintain the original canal curvature. The efficacy of WaveOne is lower than other two groups;One file exhibits superior centering capability in the preparation of canal compared with other two groups.

Key words: single files, cutting capability, reciprocating movement, shaping capability

CLC Number: 

  • R781.05