Holographic detection of a tooth structure deformation after dental filling polymerization

An experimental technique to reveal the effects of dental polymer contraction is established to choose the most appropriate polymerization technique. Tooth deformation following a dental filling polymerization is analyzed using double-exposure holographic interferometry. A caries-free, extracted hum...

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Bibliographic Details
Published in:Journal of Biomedical Optics 2007-03, Vol.12 (2), p.024026-024027
Main Authors: Pantelic, Dejan, Blazic, Larisa, Savic-Sevic, Svetlana, Panic, Bratimir
Format: Article
Language:English
Subjects:
biomechanics
Composite Resins
Deformation
dental composites
Dental Marginal Adaptation - classification
Elasticity
Finite element method
Holes
holography
Holography - methods
Human
Humans
Image Interpretation, Computer-Assisted - methods
In Vitro Techniques
interferometry
Mathematical analysis
Mathematical models
Molar, Third - anatomy & histology
Molar, Third - physiology
Polymerization
Stress, Mechanical
Stresses
Treatment Outcome
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Summary:An experimental technique to reveal the effects of dental polymer contraction is established to choose the most appropriate polymerization technique. Tooth deformation following a dental filling polymerization is analyzed using double-exposure holographic interferometry. A caries-free, extracted human molar is mounted in dental gypsum and different cavity preparations and fillings are made on the same tooth. Dental composite fillings are polymerized by an LED light source especially designed for this purpose. Holographic interferograms are made for occlusal (class I), occlusomesial (class II), and mesioocclusodistal (class II MOD) cavities and fillings. Maximum intercuspal deformation ranges from for the class I cavity to for the MOD class cavity. A finite element method (FEM) is used to calculate von Mises stress on a simplified tooth model, based on experimental results. The stress varies between 50 and , depending on the cavity type.
ISSN:1083-3668
1560-2281
DOI:10.1117/1.2714056