CREEP OF CONVENTIONAL AND MICROFILLED DENTAL COMPOSITES

被引：30

作者：

PAPADOGIANIS, Y ^{[1
]}

BOYER, DB ^{[1
]}

LAKES, RS ^{[1
]}

机构：

[1] UNIV IOWA,DEPT BIOMED ENGN,IOWA CITY,IA 52242

来源：

JOURNAL OF BIOMEDICAL MATERIALS RESEARCH | 1984年 / 18卷 / 01期

关键词：

COMPOSITE MATERIALS - Creep;

D O I：

10.1002/jbm.820180104

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The creep of microspecimens of two conventional and two microfilled composites was studied using a torsional creep apparatus. Small stresses below the materials' proportional limits were maintained for 3 hr and recovery was monitored for 30 hr. Creep curves were obtained at 21. 5, 37, and 50 degree C, and three torque levels. The composites exhibited linear viscoelastic behavior at low deformations. The magnitude of creep depended on the amount and type of resin in the composites. The materials did not recover their original shape after 30 hr after the stress was removed. No transitions were observed in the temperature range employed. The shear moduli decreased with temperature and are in reasonable agreement with literature values obtained with other tests.

引用

页码：15 / 24

页数：10

共 9 条

[1] CORRELATION BETWEEN STRENGTH OF BONDING TO ENAMEL AND MECHANICAL-PROPERTIES OF DENTAL COMPOSITES [J].