ProFile을 이용한 근관형성 시 anticurvature filing 방법의 영향
Effect of anticurvature filing method on preparation of the curved root canal using ProFile
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
본 연구에서는 ProFile로 근관형성 시 anticurvature filing 방법의 영향을 평가하고자 하였다. 변형된 Bramante 법을 이용해 36개의 레진 블록을 치근단으로부터 8mm 부위와 근관의 최대 만곡 부위에서 절단한 후 재조립하였다. 근관형성의 동작에 따라 anticurvature filing motion, circumferential filing motion, straight up-and-down motion의 3가지 실험군으로 분류한 다음 ProFile로 근관을 형성하였으며, 술 전・후의 단면을 stereomicroscope로 촬영, 저장하고 중첩하여 근관 단면의 변화와 근관의 중심 이동률을 비교 평가하였다. 모든 위치에서 단면적 변화량, 만곡 내측으로의 형성량과 중심 이동률은 세 군 간에 유의한 차이가 없었으며, 만곡 외측으로의 형성량은 치근단으로부터 8 mm 부위에서 anticurvature filing motion, circumferential filing motion, straight up-and-down motion의 순으로 많았으나, 근관의 최대 만곡 부위에서는 차이가 없었다. 이상의 결과에서 만곡 근관의 위험 부위에서 ProFile로 근관형성 시 anticurvature filing motion의 영향은 다른 motion과 비교해 볼 때 유의할 만한 차이가 없는 것으로 생각된다.
Abstract
This study investigated the effect of anticurvature filing method on preparation of the curved root canal using ProFile Thirty six resin blocks were divided equally into three groups by instrumentation motions: anticurvature filing motion, circumferential filing motion and straight up-and-down motion. Each resin block was sectioned at 8 mm level from the apex and at the greatest curvature of the canal and reassembled in metal mold by a modified Bramante technique. All groups were instrumented with the ProFile system. At each levels, image of sectioned surface were taken using CCD camera under a stereomicroscope at ×40 magnification and stored. Distances of transportation at the inner and outer area of curvature and the centering ratio were determined and compared by statistical analysis, along with the assessment of the increase of root canal cross-sectional area. The results were as follows; 1. In all groups, there was no statistical difference in the mean increase of root canal cross-sectional area, the centering ratio, and the mean distances of transportation at the inner area of curvature at each level. 2. At 8 mm level from the apex, the mean distances of transportation at the outer area of curvature decreases in following order anticurvature filing motion, circumferential filing motion, straight up-and-down motion but, no significant difference at the greatest curvature of the canal among three groups. Effect of anticurvature filing motion using ProFile does not seem to be different from other instrumentation motions at the inner area of curvature in curved root canal.
참고문헌 (25)
- "Root canal morphology of the human mandibular first molar", pp.778~784 (1971)
- "The effect of preparation procedures on original canal shape and on apical foramen shape", pp.255~262 (1975)
- "Endodontic perforation which resulted in alveolar bone loss", pp.463~470 (1979)
- "The anticurvature filing method to prepare the curved root canal", pp.792~794 (1980)
- "Preparation of the root canal", pp.53~61 (1982)
- "Instrumentation of root canals in molar using the step-down technique", pp.550~554 (1982)
- "Comparison of the relative risk of molar root perforations using various endodontic instrumentation techniques", pp.437~439 (1983)
- "A comparison of root canal preparations using Ni-Ti hand", pp.146~151 (1995)
- "The effects of four instrumentation techniques on root canal shape", pp.273~277 (1988)
- "Shaping ability of Hero 642 rotary nickel-titanium instruments in simulated root canals Part 2", pp.255~261 (2000)
- "Shaping ability of Hero 642 rotary nickel-titanium instruments and stainless steel hand K-Flexofiles in simulated curved root canals", pp.215~20 (2001)
- "Shaping ability of Mity Roto 360 degrees and Naviflex rotary nickel-titanium instruments in simulated root canals", 24(2), pp.128~134 (1998)
- "A comparison of four instrumentation techniques on apical canal transportation", 21(1), pp.26~32 (1995)
- "A methodology for evaluation of root canal instrumentation", 13(5), pp.243~245 (1987)
- "The validity of simulated root canals for the investigation of the prepared root canal shape Int Endod J 18", pp.240~246 (1985)
- "A method for the construction of simulated root canals in clear resin blocks", pp.63~66 (1991)
- "Shaping ability of ProFile 04 taper series 29 rotary nickel-titanium instruments in simulated root canals Part 1", 30(1), pp.1~7 (1997)
- "Shaping ability of Hero 642 rotary nickel-titanium instruments in simulated root canals Part 1", 33(3), pp.248~254 (2000)
- "Dynamic torque and apical forces of ProFile 04 rotary instruments during preparation of curved canals", 35(4), pp.379~389 (2002)
- "del Rio CE Microscopic evaluation of three endodontic files pre- and post-instrumentation J Endod 24", 24(7), pp.461~464 (1998)
- "The risk of perforation in the curved canal anticurvature filing compared with the step-back technique", 20(1), pp.33~39 (1987)
- "A comparison of instrument-centering ability within the root canal for three contemporary instrumentation techniques", 37(4), pp.265~271 (2004)
- "Effect of various canal preparation techniques using rotary nickel-titanium files on the maintenance of canal curvature", 28(1), pp.41~49 (2003)
- "The efficiency of the NiTi rotary files in curved simulated canals shaped by novice operators", pp.146~155 (2003)
- "Shaping ability of four rotary nickel-titanium instruments to prepare root canal at danger zone", 29(5), pp.446~453 453 (2004)