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The Impact of Composite Structure on Its Elastic Response

Unit of Dental Morphology and Oral Physiology

P. Lambrechts

Department of Operative Dentistry and Dental Materials, Katholieke Universiteit Leuven, Capucijnenvoer 7, 3000 Leuven, Belgium

V. Van Doren

Institute for Applied Mathematics, Rijksuniversitair Centrum Antwerpen, Groenenborgerlaan 171, 2020 Antwerpen, Belgium

G. Vanherle

Department of Operative Dentistry and Dental Materials, Katholieke Universiteit Leuven, Capucijnenvoer 7, 3000 Leuven, Belgium

The non-destructive determination of Young's modulus of dental composites by means of the fundamental period was found to be reliable and accurate. Post-polymerization effects could clearly be detected. Exponential regression analysis showed a correlation coefficient of 0.92, after logarithmic transformation, with volumetric filler content.

The high accuracy and reliability of the measurements themselves are reflected in low standard deviations. The results are in excellent agreement with those of other investigations. Furthermore, the ease and speed of operation make this new procedure a powerful laboratory tool for material-testing and practical large-scale investigations.

Journal of Dental Research, Vol. 65, No. 5, 648-653 (1986)
DOI: 10.1177/00220345860650050301


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