대한치과보존학회:학술대회논문집 (Proceedings of the KACD Conference)
- 대한치과보존학회 2003년도 제120회 추계학술대회 제 5차 한ㆍ일 치과보존학회 공동학술대회
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- Pages.547-547
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- 2003
Comparison of root canal preparation by three Ni-Ti instruments
- Shibutani, Takuya (Conservative Dentistry, Tokushima University, School of Dentistry) ;
- Ozaki, Kazumi (Conservative Dentistry, Tokushima University, School of Dentistry) ;
- Matsuo, Takashi (Conservative Dentistry, Tokushima University, School of Dentistry)
- 발행 : 2003.11.01
초록
The aim of this study was to compare the effects of three Ni-Ti instruments on leaning ability by evaluating the volumetric and morphological changes in the apical 6mm of the root canals before and after preparation, using three-dimensionally reconstructed root canals of extracted human teeth. Forty-five teeth were used in this study. They were opened the chambers and removed the all pulp remnants ultrasonically. Subsequently, the canal wall was coated with silver paste and prepared using ProTaper, ProFile and GT rotary files according to the manufacturers instructions. Before and after root canal preparation, all the specimens were scanned with micro computed tomography and examined the differences in dentine volume removed, canal straightening, the proportion of the unchanged area and canal transportation. Quantitative analysis revealed that instrumentation increased in canal volume ranging between 0.081 and
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