부산대학교 도서관

BACKGROUND:: In recent years, the clinical use of glass fiber and carbon fiber post has obtained a more satisfactory result, but the bonding between the fiber post and root canal dentin also need further research. OBJECTIVE:: To compare the fracture resistance ability of three post-core systems in the repair of the first premolar, and to analyze the influential factors. METHODS:: Totally 36 single rooted first premolars from orthodontic patients were divided into A, B and C three groups, respectively after endodontic treatment (group A: MACRO-LOCK quartz fiber with FIBERCONETM post-core system, group B: Nr-Cr post-core system; group C: MACRO-LOCK quartz fiber post-core system). After restoration with Nr-Cr PFM full crown, they were fixed in universal testing machine for loading, until the specimen destroyed instantly, to record the load to fracture (in Newton) and the load-displacement curve. RESULTS AND CONCLUSION:: The median fracture values of three groups were as follows: Group A: (403.99±15.91) N, Group B: (304.31±16.95) N, Group C: (233.48±22.56) N. The group A showed a significantly higher level of fracture strength compared to the other groups and the fracture model of MACRO-LOCK quartz fiber with FIBERCONETM post-core system allowed the possibility of re-preparation (P < 0.05). The MACRO-LOCK quartz fiber with FIBERCONETM post-core system showed a significantly higher level of fracture strength compared to the other groups and strengthened the flared roots.Zhang Q, Yu HT. Comparison of the fracture resistance of different fiber posts in combination with auxiliary piles in restoration of flared roots. Zhongguo Zuzhi Gongcheng Yanjiu yu Linchuang Kangfu. 2011;15(47): 8855-8858. [http://www.crter.cn http://en.zglckf.com]