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A Study on the Shaping Ability of Three Different Rotary Nickel-Titanium Instruments in Simulated Curved Root Canal  

Kim, Kyoung-A (Department of Dentistry, School of Dentstry, Chonbuk National University)
Chon, Seong-Min (Department of Dentistry, School of Dentstry, Chonbuk National University)
Kwon, Su-Mi (Department of Dentistry, School of Dentstry, Chonbuk National University)
Lee, Kwang-Won (Department of Dentistry, School of Dentstry, Chonbuk National University)
Yu, Mi-Kyung (Department of Dentistry, School of Dentstry, Chonbuk National University)
Publication Information
Journal of Dental Rehabilitation and Applied Science / v.23, no.4, 2007 , pp. 293-302 More about this Journal
Abstract
I. Objectives The purpose of this study was to compare the shaping ability between the single length technique performed with Mtwo instruments (VDW, Munich, Germany) and the crown-down technique using K3 (SybronEndo, West Collins, CA, USA) and RaCe (FKG, La Chaux-de-Fonds, Switzerland) instruments. II. Materials & Methods Forty five curved canals in resin blocks were equally divided in to three groups. Group 1 (Mtwo) was instrumented used the full length of canal according to the manufacturer's instructions. The simulated canals was prepared to an instrument size of 35, 0.04 taper canal terminus. In group 2 (Race) and group 3 (K3) was instrumented in a crown-down manner and prepared to an instrument size of 30, 0.06 taper canal terminus. Pre- and post-instrumentation images were scanned and assessment of canal shape was completed with a computer image analysis program. Material removal was measured at 7 measuring points, beginning 1mm from the end point of preparation. Differenced of centering ratio were statistically analyzed using One-way ANOVA followed by Duncan's test. II. Results & Conclusion There was no significant difference on 1, 2, 3 and 7mm measuring point. At 4 and 5 measuring point, significant difference showed between the Mtow instruments and other two instruments. (p<0.05)
Keywords
Mtwo instrument; rotary nickel-titanium instrument; simulated curved canal; shaping ability;
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Times Cited By KSCI : 1  (Citation Analysis)
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