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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2010.1
- 수록면
- 380 - 386 (7page)
이용수
초록· 키워드
오류제보하기
Objectives: The introduction of nickel-titanium alloy endodontic instruments has greatly simplified shaping the root canal systems. However, these new instruments have several unexpected disadvantages. One of these is tendency to screw into the canal. In this study, the influence of taper on the screw-in effect of the Ni-Ti rotary instrument were evaluated.
Materials and Methods: A total of 20 simulated root canals with an S-shaped curvature in clear resin blocks were divided into two groups. ProFile .02, .04, .06 (Dentsply-Maillefer) and GT rotary files .08, .10, .12(Dentsply) were used in Profile group, and K3 .04, .06, .08, .10, and .12 (SybronEndo, Glendora) were used in K3 group. Files were used with a single pecking motion at a constant speed of 300 rpm. A special device was made to measure the force of screw-in effect. A dynamometer of the device recorded the screwin force during simulated canal preparation and the recorded data was stored in computer with designed software. The data were subjected to one-way ANOVA and Tukey's multiple range test for post-hoc test. p value of less than 0.05 was regarded significant.
Results: The more tapered instruments generated more screw-in forces in Profile group (p < 0.05). In K3group, 0.08, 0.10. and 0.12 tapered instruments showed more screw-in force than 0.04 tapered one, and 0.08 and 0.12 tapered instruments showed more screw-in force than 0.06 tapered one (p < 0.05).
Conclusions: The more tapered instruments seems to produce more screw-in force. To avoid this screw-in force during instrumentation, more attention may be needed when using more tapered instruments. [J Kor Acad Cons Dent 2010;35(5):380-386.]
목차
등록된 정보가 없습니다.
참고문헌 (23)
참고문헌 신청
Camps JJ / 1995 / Torsional and Stiffness properties of nick-titanium k-files / Int Endod J 28 : 239 ~ 243
David B / 1983 / Twenty years of endodontic success and failure / J Endod 9 : 198 ~ 202
Diemer F / 2004 / Effect of Pitch Length on the Behavior of Rotary Triple Helix Root Canal Instruments / J Endod 30 : 716 ~ 718
Friedman S / 1995 / Evaluation of success and failure after endodontic therapy using a glass ionomer cement sealer / J Endod 21 : 384 ~ 390
Glosson CR / 1995 / A comparison of root canal preparations using nickel-titanium hand, nickel-titanium engine-driven, and K-flex endodontic instruments / J Endod 21 : 146 ~
David B / 1983 / Twenty years of endodontic success and failure / J Endod 9 : 198 ~ 202
Diemer F / 2004 / Effect of Pitch Length on the Behavior of Rotary Triple Helix Root Canal Instruments / J Endod 30 : 716 ~ 718
Friedman S / 1995 / Evaluation of success and failure after endodontic therapy using a glass ionomer cement sealer / J Endod 21 : 384 ~ 390
Glosson CR / 1995 / A comparison of root canal preparations using nickel-titanium hand, nickel-titanium engine-driven, and K-flex endodontic instruments / J Endod 21 : 146 ~
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