방사선 미세컴퓨터단층촬영을 이용한 네종류 file systems의 중심유지능에 관한 비교
A comparison of canal centering abilities of four root canal instrument systems using X-ray micro-computed tomography
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1995.23. Esposito PT, Cunningham CJ. A comparison of canalpreparation with nickel-titanium and stainless steelinstruments. J Endod 21:173-176, 1995.24.Bryant ST, Dummer PMH, Pitoni C, Bourba M,Moghal S. Shaping ability of .04 and .06 taper ProFilerotary nickel-titanium instruments in simulated rootcanals. Int Endod J 32:155-164, 1999.25. Peters OA, Scho¨ nenberger K, Laib A. Effects of fourNi-Ti preparation techniques on root canal geometryassessed by micro computed tomography. Int Endod J34:221-230, 2001.A comparison of canal centering abilities of four root canal in strument systems using X-ray micro-computed tomography대한치과보존학회지: Vol. 32, No. 1, 200768방사선 미세컴퓨터단층촬영을 이용한 네 종류 file systems의 중심유지능에 관한 비교고혜숙유현미박동성*성균관대학교 의과대학 삼성서울병원 치과보존과이 연구의 목적은 네 종류 file systems의 중심유지능과 근관성형 전후의 상아질 삭제량을 비교하는 것이다. 10-20도의 만곡을 갖는 발거된 20개의 하악 제1대구치의 근심근관(총 40개의 근관)을 근관성형 전에 X선 미세단층촬영 스캐너를 이용하여 스캔하였다. 제 1군은 근관부를 넓힌 후 stainless steel K-Flexofile을 사용하여
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