Dental composite resins: measuring the polymerization shrinkage using optical fiber Bragg grating sensors

H. Ottevaere; M. Tabak; K. Chah; P. Mégret; H. Thienpont

doi:10.1117/12.922127

9 May 2012 Dental composite resins: measuring the polymerization shrinkage using optical fiber Bragg grating sensors

H. Ottevaere, M. Tabak, K. Chah, P. Mégret, H. Thienpont

Proceedings Volume 8439, Optical Sensing and Detection II; 843903 (2012) https://doi.org/10.1117/12.922127
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

Polymerization shrinkage of dental composite materials is recognized as one of the main reasons for the development of marginal leakage between a tooth and filling material. As an alternative to conventional measurement methods, we propose optical fiber Bragg grating (FBG) based sensors to perform real-time strain and shrinkage measurements during the curing process of dental resin cements. We introduce a fully automated set-up to measure the Bragg wavelength shift of the FBG strain sensors and to accurately monitor the linear strain and shrinkage of dental resins during curing. Three different dental resin materials were studied in this work: matrix-filled BisGMA-based resins, glass ionomers and organic modified ceramics.

Citation Download Citation

H. Ottevaere, M. Tabak, K. Chah, P. Mégret, and H. Thienpont "Dental composite resins: measuring the polymerization shrinkage using optical fiber Bragg grating sensors", Proc. SPIE 8439, Optical Sensing and Detection II, 843903 (9 May 2012); https://doi.org/10.1117/12.922127

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