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《Journal of Dental Prevention and Treatment》 2010-04
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Clinical Effect of Mtwo Rotary Nickel-titanium Instruments in Root Canals Preparation

ZHAO Ying-zi. Department of Endodontology, Shenyang Stomatological Hospital, Shenyang 110002, China  
Objective To observe clinical efficacy of root canal preparation of new rotary nickel-titanium instruments-Mtwo. Methods Eighty teeth, 178 root canals, were randomly divided into experimental group and control group. In root canal preparation, Mtwo rotary nickel-titanium instruments and improved step-back technique were used in the experimental group, while the hand stainless steel K-file and the step-back technique were applied in the control group use. Both groups’ root canals were obturated by lateral compaction technique. The time for root canal preparation, complications after root canal preparation and obturated effect were compared. Results With regard to root canal preparation time ,experimental group was significantly shorter than the control group. After root canal preparation, the experimental group has fewer complications than the control group. Conclusion Mtwo rotary nickel-titanium instruments were faster and more effective than routine technique in root canal preparation.
【CateGory Index】: R781.05
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