Probing the Origins and Control of Shrinkage Stress in Dental Resin-Composites. II. Novel Methods of Simultaneous Measurement of Polymerization Shrinkage Stress and Conversion

Published

October 1, 2004

Author(s)

H Lu, J W. Stansbury, Sabine H. Dickens, F Eichmiller, Christopher N. Bowman

Abstract

In this study, we have probed the interrelationships between polymerization shrinkage stress development and the polymerization progress with a novel experimental technique. This technique is capable of measuring the shrinkage stress, using a cantilever beam tensometer, and double bond conversion, using a non-invasive fiber optic Near-IR system , simultaneously in real-time on the same sample. The results from both filled and unfilled Bis-GMA/TEGMA (70/30) systems showed that the shrinkage stress buildup was concentrated in the latter stages of polymerization, with its dramatic increase linked to the asymptotic approach of conversion to its limiting value.

Citation

Journal of Biomedical Materials Research Part B-Applied Biomaterials

Volume

71B

Issue

No. 1

Pub Type

Journals

Keywords

origins, probing, shrinkage

Citation

Lu, H. , Stansbury, J. , Dickens, S. , Eichmiller, F. and Bowman, C. (2004), Probing the Origins and Control of Shrinkage Stress in Dental Resin-Composites. II. Novel Methods of Simultaneous Measurement of Polymerization Shrinkage Stress and Conversion, Journal of Biomedical Materials Research Part B-Applied Biomaterials (Accessed May 19, 2024)