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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한치과보철학회 The Journal of Advanced of Prosthodontics The Journal of Advanced of Prosthodontics 제9권 제5호
- 발행연도
- 2017.1
- 수록면
- 328 - 334 (7page)
이용수
초록· 키워드
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PURPOSE. This study evaluated fracture resistance with regard to ferrule lengths and post reinforcement on endodontically treated mandibular premolars incorporating a prefabricated post and resin core.
MATERIALS AND METHODS. One hundred extracted mandibular premolars were randomly divided into 5 groups (n=20): intact teeth (NR); endodontically treated teeth (ETT) without post (NP); ETT restored with a prefabricated post with ferrule lengths of either 0 mm (F0), 1 mm (F1), or 2 mm (F2). Prepared teeth were restored with metalcrowns. A thermal cycling test was performed for 1,000 cycles. Loading was applied at an angle of 135 degrees to the axis of the tooth using a universal testing machine with a crosshead speed of 2.54 mm/min. Fracture loads were analyzed by one-way ANOVA and Tukey HSD test using a statistical program (α=.05).
RESULTS. There were statistical differences in fracture loads among groups (P<.001). The fracture load of F2 (237.7 ± 83.4) was significantly higher than those of NP (155.6 ± 74.3 N), F0 (98.8 ± 43.3 N), and F1 (152.8 ± 78.5 N) (P=.011, P<.001, and P=.008, respectively).
CONCLUSION. Fracture resistance of ETT depends on the length of the ferrule, as shown by the significantly increased fracture resistance in the 2 mm ferrule group (F2) compared to the groups with shorter ferrule lengths (F0, F1) and without post (NP).
목차
등록된 정보가 없습니다.
참고문헌 (23)
참고문헌 신청
Al-Omiri MK / 2010 / Fracture resistance of teeth restored with post-retained restorations:an overview / J Endod 36 : 1439 ~ 1449
Buttel L / 2009 / Influence of post fit and post length on fracture resistance / Int Endod J 42 : 47 ~ 53
Cagidiaco MC / 2008 / Placement of fiber prefabricated or custom made posts affects the 3-year survival of endodontically treated premolars / Am J Dent 21 : 179 ~ 184
Fernandes AS / 2001 / Factors affecting the fracture resistance of post-core reconstructed teeth: a review / Int J Prosthodont 14 : 355 ~ 363
Fokkinga WA / 2005 / Ex vivo fracture resistance of direct resin composite complete crowns with and without posts on maxillary premolars / Int Endod J 38 : 230 ~ 237
Buttel L / 2009 / Influence of post fit and post length on fracture resistance / Int Endod J 42 : 47 ~ 53
Cagidiaco MC / 2008 / Placement of fiber prefabricated or custom made posts affects the 3-year survival of endodontically treated premolars / Am J Dent 21 : 179 ~ 184
Fernandes AS / 2001 / Factors affecting the fracture resistance of post-core reconstructed teeth: a review / Int J Prosthodont 14 : 355 ~ 363
Fokkinga WA / 2005 / Ex vivo fracture resistance of direct resin composite complete crowns with and without posts on maxillary premolars / Int Endod J 38 : 230 ~ 237
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