Variables Affecting the Fracture Toughness of Dental Composites-Reference-Cited by-同舟云学术

Variables Affecting the Fracture Toughness of Dental Composites

Published:1987-06 Issue:6 Volume:66 Page:1140-1145
ISSN:0022-0345
Container-title:Journal of Dental Research
language:en
Short-container-title:J Dent Res

Author:

Ferracane J.L.¹,Antonio R.C.¹,Matsumoto H.¹

Affiliation:

1. Baylor College of Dentistry, Department of Dental Materials, 3302 Gaston Avenue, Dallas, Texas 75246, Sunstar, Incorporated, 5-30-1 Kamihamuro, Takutsuki-shi, Osaka, Japan 569

Abstract

The fracture toughness of a variety of dental composites was evaluated using notched bending specimens, with and without pre-cracks. The pre-crack simulates more accurately a sharp, natural flaw in a material than does a notch, and is standard procedure in fracture-toughness evaluation. The fracture toughness was related to the filler composition and degree of conversion in the composite resins. In general, fracture toughness was highest in the more heavily filled resins, independent of degree of conversion in the matrix. The results also show that producing a pre-crack in certain composites reduced the value of their fracture toughness compared with notched-only specimens.

Publisher

SAGE Publications

Subject

General Dentistry

Link

http://journals.sagepub.com/doi/pdf/10.1177/00220345870660060901

Reference21 articles.

1. The effect of interfacial bonding on the toughness of glass filled polymers

2. Time-dependent Deformation of Composite Resins — Compositional Considerations

3. Fracture properties of composite and glass ionomer dental restorative materials

4. Hertzberg, R.W. (1976): Deformation and Fracture Mechanics of Engineering Materials, New York: John Wiley and Sons, pp. 274, 283.

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