지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.1
- 수록면
- 301 - 308 (8page)
이용수
초록· 키워드
오류제보하기
Objectives: It was aimed to compare the cyclic fatigue resistances of ProTaper Universal (PTU), ProTaper Next (PTN), and ProTaper Gold (PTG) and the effects of sterilization by autoclave on the cyclic fatigue life of nickel-titanium (NiTi) instruments.
Materials and Methods: Eighty PTU, 80 PTN, and 80 PTG were included to the present study. Files were tested in a simulated canal. Each brand of the NiTi files were divided into 4 subgroups: group 1, as received condition; group 2, pre-sterilized instruments exposed to 10 times sterilization by autoclave; group 3, instruments tested were sterilized after being exposed to 25%, 50%, and 75% of the mean cycles to failure, then cycled fatigue test was performed; group 4, instruments exposed to the same experiment with group 3 without sterilization. The number of cycles to failure (NCF) was calculated. The data was statistically analyzed by using one-way analysis of variance and post hoc Tukey tests.
Results: PTG showed significantly higher NCF than PTU and PTN in group 1 (p < 0.05). Sterilization significantly increased the NCF of PTN and PTG (p < 0.05) in group 2. PTN in group 3 had significantly higher cyclic fatigue resistance than PTN group 4 (p < 0.05). Also, significantly higher NCF was observed for PTG in group 2 than in groups 3 and 4 (p < 0.05).
Conclusions: PTG instrument made of new gold alloy was more resistant to fatigue failure than PTN and PTU. Autoclaving increased the cyclic fatigue resistances of PTN and PTG.
목차
등록된 정보가 없습니다.
참고문헌 (25)
참고문헌 신청
/ / Dentsply Sirona Endodontics (US): ProTaper Next Brochure
Arias A / 2014 / Torque and force induced by ProTaper Universal and ProTaper Next during shaping of large and small root canals in extracted teeth / J Endod 40
Canalda-Sahli C / 1998 / The effect of sterilization on bending and torsional properties of K-files manufactured with different metallic alloys / Int Endod J 31 : 48 ~ 52
Chaves Craveiro de Melo M / 2002 / Fatigue resistance of engine-driven rotary nickel-titanium endodontic instruments / J Endod 28 : 765 ~ 769
Cheung GS / 2005 / Defects in ProTaper S1 instruments after clinical use: fractographic examination / Int Endod J 38 : 802 ~ 809
Arias A / 2014 / Torque and force induced by ProTaper Universal and ProTaper Next during shaping of large and small root canals in extracted teeth / J Endod 40
Canalda-Sahli C / 1998 / The effect of sterilization on bending and torsional properties of K-files manufactured with different metallic alloys / Int Endod J 31 : 48 ~ 52
Chaves Craveiro de Melo M / 2002 / Fatigue resistance of engine-driven rotary nickel-titanium endodontic instruments / J Endod 28 : 765 ~ 769
Cheung GS / 2005 / Defects in ProTaper S1 instruments after clinical use: fractographic examination / Int Endod J 38 : 802 ~ 809
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