Open AccessReal-time measurement of internal stress of dental tissue using holography
Author(s) -
Dejan Pantelić,
Larisa Blažić,
Svetlana Savić-Šević,
Branka Murić,
Darko Vasiljević,
B. Panić,
Ilija Belić
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.006823
Subject(s) - holography , materials science , optics , holographic interferometry , stress (linguistics) , deformation (meteorology) , internal stress , interference (communication) , composite material , physics , computer science , computer network , linguistics , philosophy , channel (broadcasting)
We describe a real-time holographic technique used to observe dental contraction due to photo-polymerization of dental filling during LED lamp illumination. An off-axis setup was used, with wet in-situ processing of the holographic plate, and consequent recording of interference fringes using CCD camera. Finite elements method was used to calculate internal stress of dental tissue, corresponding to experimentally measured deformation. A technique enables selection of preferred illumination method with reduced polymerization contraction. As a consequence, durability of dental filling might be significantly improved.