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Nondestructive quantification of leakage and its correlation with material performance parameters



Jirun Sun, Rui Fang, Nancy Lin, Naomi Eidelman, Sheng Lin-Gibson


Current methods to determine debonding/leakage at the tooth-composite interphase are qualitative or semi-quantitative. Our previous work introduced a 3D imaging technique to determine and visualize leakage and its distribution at the interface of cavity wall and composite restoration in model cavities. In this study, an automated program was developed to quantify leakage in terms of area and volume. 3D leakage distribution obtained via image analysis program was compared with that visualized by dye penetration. The relation between leakage and various material performance parameters including processability, shrinkage, stress, and shrinkage strain-rate were determined using a series of experimental composites containing different filler contents. This powerful method provides insight to understand the correlation between leakage and material properties.


Composites, Dental restorative material, FTIR microspectroscopy, Microleakage, Photopolymerization, Polymerization shrinkage, X-ray microcomputed tomography, Shrinkage strain-rate


Sun, J. , Fang, R. , Lin, N. , Eidelman, N. and Lin-Gibson, S. (2009), Nondestructive quantification of leakage and its correlation with material performance parameters, Biomaterials, [online], (Accessed July 18, 2024)


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Created July 29, 2009, Updated October 12, 2021