본문 바로가기
KERD
논문KCI 등재

학생들이 사용한 세 종류 Ni-Ti file systems의 근관성형 효율 비교

Relative effcacy of three Ni-Ti file systems used by undergraduates

0

조회

0

다운로드

1

인용

0

참고문헌

주제분류치의학

초록

이 연구의 목적은 Ni-Ti file을 사용한 경험이 없는 학생들이 세 종류 Ni-Ti file systems을 사용하였을 때 근관형성 효율을 비교하는 것이다. Ni-Ti file의 사용 경험이 없는 부산대학교 치과대학 4학년 학생 50명이 세 종류의 Ni-Ti file systems - ProFile (PF; Dentsply Maillefer, Ballaigues, Switzerland), manual ProTaper (MPT; Dentsply Maillefer, Ballaigues, Switzerland), rotary ProTaper (RPT; Dentsply Maillefer, Ballaigues, Switzerland) -을 사용하여 각 system으로 하나의 근관씩, 모두 150개의 레진 블락 근관모형(Endo Training Bloc; Dentsply Maillefer, Ballaigues, Switzerland)을 형성하였다. 근관형성에 사용된 file의 파절이나 변형 및 근관형성 후 형태의 이상을 조사하고, 스캐너로 근관 형성 전후의 이미지를 채득하여 중첩 비교함으로써 근단부로부터 1mm, 3mm, 그리고 5mm 높이에서의 삭제된 근관의 폭경, 근관의 변위량, 그리고 중심변위율 등을 산출하고 통계학적 비교 분석을 하였다. 그리고 세 가지 systems에 관한 학생들의 주관적인 선호도를 조사하였다. 그 결과 졸업을 앞둔 치과대학 재학생들도 특별한 문제점 없이 세 가지 Ni-Ti file systems을 사용한 근관형성이 가능함을 확인하였다. 세 실험군을 비교하였을 때, 양적인 삭제 능력은 두 ProTaper systems (manual and rotary)이 ProFile玲 비해 우세하였지만, 근관의 변위는 두 ProTaper systems에서 더 많이 유발되었다. 근관 중심 이동률 등의 질적 평가를 포함하여 학생들의 선호도를 종합적으로 고려할 때, 삭제 능력에 있어서는 rotary ProTaper怜 더 효율적이지만 안전성을 고려하면 ProFile永 추천된다. 정규 교육과정에 Ni-Ti file systems의 도입을 위해서 초심자와 관련한 더 많은 연구가 진행되어야 하겠다.

Abstract

The purpose of this study was to compare and evaluate the shaping ability of the three different Ni-Ti file systems used by undergraduate students. Fifty undergraduate students prepared 150 simulated curved root canals in resin blocks with three Ni-Ti file systems - ProFile (PF), Manual ProTaper (MPT), Rotary ProTaper (RPT). Every student prepared 3 simulated root canals with each system respectively. After root canal preparation, the Ni-Ti files were evaluated for distortion or breakage. Assessments were made according to the presence of various types of canal aberrations. The pre- and post-instrumented canal images were attained and superimposed. The instrumented root canal width were measured and calculated for the net transportation (deviation) and the centering ratio. Under the condition of this study, both ProTaper systems allowed significantly more removal of root canal wall than the ProFile system. In the important other aspects such as the centering ratio, there was no significant differences between the systems. Novice dental students were able to prepare curved root canals with any kinds of Ni-Ti file systems with little aberration and great conservation of tooth structure. Students want to learn effective methods and at the same time simple rotary procedures. The rotary ProTaper systems were one of the most compatible to these students from the point of view of cutting ability. The ProFile system was also compatible in safe and gentle shaping.

참고문헌 (30)

  1. "Comparing apical preparations of root canals shaped by nickel-titanium rotary instruments and nickel-titanium hand instruments", 27(3), pp.196~202 (2001)
  2. "A comparison of canal preparation with nickel-titanium and stainless steel instruments", 21(4), pp.173~6 (1995)
  3. "Comparison of hand stainless steel and nickel titanium rotary instrumentation", 30(6), pp.432~5 (2004)
  4. "Analysis of Ni-Ti versus stainless steel instrumentation in resin simulated canals", 23(4), pp.232~235 (1997)
  5. "The use of computed tomography when comparing nickel-titanium and stainless steel files during preparation of simulated curved canals", 34(6), pp.452~457 (2001)
  6. "Shaping ability of Hero 642 rotary nickel-titanium instruments and stainless steel hand K-Flexofiles in simulated curved root canals", 92(2), pp.215~220 (2001)
  7. "A comparison of shaping ability using ProFile and Flex-R endodontic instruments in simulated canals", 28(4), pp.316~321 (2002)
  8. "breakage and distortion in severely curved roots of molars", 30(4), pp.234~237 (2004)
  9. "Progressive versus constant tapered shaft design using NiTi rotary instruments", 36(4), pp.288~295 (2003)
  10. "ProTaper NT system", 48(1), pp.87~111 (2004)
  11. "Effect of experience on quality of canal preparation with rotary nickel-titanium files", 88(6), pp.714~718 (1999)
  12. "A reconstructed computerized tomographic comparison of Ni-Ti rotary GT files versus traditional instruments in canals shaped by novice operators", 34(6), pp.476~484 (2001)
  13. "Root canal shaping with manual stainless steel files and rotary Ni-Ti files performed by students", 36(4), pp.246~255 (2003)
  14. "Root-canal shaping with manual and rotary Ni-Ti files performed by students", 36(11), pp.715~723 (2003)
  15. "Teaching an engine-driven preparation technique to undergraduates", 36(7), pp.476~82 (2003)
  16. "Undergraduate endodontic teaching in the United Kingdom", 30(4), pp.234~239 (1997)
  17. "The effects of four instrumentation techniques on root canal shape", 14(6), pp.273~277 (1988)
  18. "An analysis of canal centering using mechanical instrumentation techniques", 25(6), pp.441~445 (1999)
  19. "Questionnaire survey on the use of rotary nickel-titanium endodontic instruments by Australian dentists", 37(4), pp.249~259 (2004)
  20. "Influence of torque control motors and the operator's proficiency on ProTaper failures", 96(2), pp.229~233 (2003)
  21. "Preparation of severely curved simulated root canals using engine-driven rotary and conventional hand instruments", 5(1), pp.17~25 (2001)
  22. "Influence of rotational speed torque and operator proficiency on failure of Greater Taper files", 35(1), pp.7~12 (2002)
  23. "Shaping ability of ProTaper nickel-titanium files in simulated resin root canals", 37(9), pp.613~623 (2004)
  24. "A comparison of the shaping abilities of 4 nickel-titanium rotary instruments in simulated root canals", 95(2), pp.228~233 (2003)
  25. "Comparative investigation of two rotary nickel-titanium instruments Shaping ability in simulated curved canals", 37(4), pp.229~238 (2004)
  26. "Comparison of apical transportation between ProFile and ProTaper NiTi rotary instruments", 37(6), pp.359~364 (2004)
  27. "A survey of endodontic practice amongst Flemish dentists", 35(9), pp.759~767 (2002)
  28. "Undergraduate curriculum guidelines for endodontology", 34(8), pp.574~580 (2001)
  29. "Comparative analysis of torsional and bending stresses in two mathematical models of nickel-titanium rotary instruments", 29(1), pp.15~9 (2003)
  30. "Comparative analysis of torsional and bending stresses in two mathematical models of nickel-titanium rotary instruments", 29(1), pp.15~9 (2003)

관련 논문AI추천

이 간행물의 다른 논문 (8건)