What is it about?
Fractographic analysis has been used to investigate the fracture behavior of Computer-aided design/computer-aided manufacturing (CAD/CAM) composite crowns by subjecting them to compression tests. However, it is difficult to investigate details of the fracture, including its initiation and propagation, using in vitro tests. The aim of this study was to determine the fracture origins and the order of crack initiation of CAD/CAM composite crowns using in silico nonlinear dynamic finite element analysis (FEA).
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Why is it important?
The in silico model established in this study clarified the crack initiation of the CAD/CAM composite crowns and the order of crack initiation among the investigated products, suggesting that the present approach is useful for analyzing the fracture behavior of CAD/CAM composite crowns in detail.
Perspectives
•Crack initiation of CAD/CAM composite crowns was assessed. •Order of crack initiation of the crown specimens was analyzed. •Crack initiation was observed near the lingual side of the crowns. •Fracture patterns of the in vitro/in silico compression tests were matched. •In silico load-displacement curves were separated into two phases.
Dr Satoshi Yamaguchi
Osaka University Graduate School of Dentistry
Read the Original
This page is a summary of: Fracture origin and crack propagation of CAD/CAM composite crowns by combining of in vitro and in silico approaches, Journal of the Mechanical Behavior of Biomedical Materials, September 2020, Elsevier,
DOI: 10.1016/j.jmbbm.2020.104083.
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