Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
권호 표지

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

만곡 근관에서 다양한 엔진 구동형 Nickel-Titanium 파일의 근관 성형능력에 대한 연구

  • 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)
  • 김경아 (전북대학교 치과대학 치과보존학교실) ;
  • 전성민 (전북대학교 치과대학 치과보존학교실) ;
  • 권수미 (전북대학교 치과대학 치과보존학교실) ;
  • 이광원 (전북대학교 치과대학 치과보존학교실) ;
  • 유미경 (전북대학교 치과대학 치과보존학교실)
  • Published : 2007.12.30
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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

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