INVESTIGADORES
ARENAS Gustavo Francisco
artículos
Título:
Polymerization Shrinkage of a Resin Composite Determined by a Fiber Optic Fizeau Interferometer
Autor/es:
ARENAS GUSTAVO F.; NORIEGA SERGIO B.; VALLO CLAUDIA I.; DUCHOWICZ RICARDO
Revista:
OPTICS COMMUNICATIONS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2007 vol. 271 p. 581 - 586
ISSN:
0030-4018
Resumen:
A fiber optic sensing method based on a Fizeau-type interferometric scheme was employed for monitoring linear polymerization shrinkage in dental restoratives. This technique offers several advantages over the conventional methods of measuring polymerization contraction. This simple, compact, non-invasive and self-calibrating system competes with both conventional and other high-resolution bulk interferometric techniques. In this work, an analysis of the quality of interference signal and fringes visibility was performed in order to characterize their resolution and application range. The measurements of percent linear contraction as a function of the sample thickness were carried out in this study on two dental composites: Filtek P60 (3M ESPE) Posterior Restorer and Filtek Z250 (3M ESPE) Universal Restorer. The results were discussed with respect to others obtained employing alternative techniques.