Three-dimensional finite element analysis of stress distribution in composite resin cores with fiber posts of varying diameters

被引：51

作者：

Okamoto, Kazuhiko ^{[1
]}

Ino, Teruo ^{[1
]}

Wase, Naoki ^{[1
]}

Shimizu, Eitaroh ^{[1
]}

Suzuki, Megumi ^{[1
]}

Satoh, Goh ^{[1
]}

Ohkawa, Shuji ^{[1
]}

Fujisawa, Masanori ^{[1
]}

机构：

[1] Meikai Univ, Sch Dent, Div Prosthodont, Dept Restorat & Biomat Sci, Sakado, Saitama 3500283, Japan

来源：

DENTAL MATERIALS JOURNAL | 2008年 / 27卷 / 01期

关键词：

finite element analysis; composite resin core with fiber post; fiber post diameter;

D O I：

10.4012/dmj.27.49

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Using three-dimensional finite element analysis (3D-FEA), stress distributions in the remaining radicular tooth structure were investigated under the condition of varying diameters of fiber post for fiber post-reinforced composite resin cores (fiber post and core) in maxillary central incisors. Four 3D-FEA models were constructed: (1) fiber post (phi 1.2, phi 1.4, and phi 1.6 mm) and composite resin core; and (2) gold-cast post and core. Maximum stresses in the tooth structure for fiber post and core were higher than that for gold-cast post and core. In the former models, stresses in the tooth structure as well as in the composite resin were slightly reduced with increase in fiber post diameter. These results thus suggested that to reduce stress in the remaining radicular tooth with a large coronal defect, it is recommended to accompany a composite resin core with a fiber post of a large diameter.

引用

页码：49 / 55

页数：7

共 19 条

[1] Resistance to fracture of endodontically treated teeth restored with different post systems [J].