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Relationship between Stiffness of Restorative Material and Stress Distribution for Notch-shaped Non-carious Cervical Lesions  

Kim, Kwang-Hoon (Department of Mechanical Design Engineering, Pusan National University)
Park, Jeong-Kil (School of Conservative Dentistry, Pusan National University)
Son, Kwon (Department of Mechanical Design Engineering, Pusan National University)
Publication Information
International Journal of Precision Engineering and Manufacturing / v.9, no.3, 2008 , pp. 64-67 More about this Journal
Abstract
This study investigated the influence of composite resins with different elastic moduli and occlusal loading conditions on the stress distribution of restored notch-shaped non-carious cervical lesions (NCCL) using 3D finite element analysis. Two different materials, Tetric Flow and Z100, were used as representative flowable hybrid resins for the restoration of NCCL. A static point load of 500 N was applied at the buccal and palatal cusps. The ratios of stress reduction to energy dissipation were better in the compressive state than the tensile state regardless of the restorative material. The total dissipation ratios for Tetric Flow were 1.5% and 4.2% larger than those for Z100 under compression and tension, respectively. Therefore, tensile stress poses more of a risk for tooth fracture, and Tetric Flow is a more appropriate material for restoration.
Keywords
Energy dissipation; Finite element; Non-carious cervical lesion; Restorative material; Stiffness;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 1  (Related Records In Web of Science)
Times Cited By SCOPUS : 1
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