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Medical & Biological Engineering & Computing

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01.04.2009 | Original Article

Mechanical interactions of cuspal-coverage designs and cement thickness in a cusp-replacing ceramic premolar restoration: a finite element study

verfasst von: Yen-Hsiang Chang, Wen-Hsueng Lin, Wen-Chieh Kuo, Chia-Yu Chang, Chun-Li Lin

Erschienen in: Medical & Biological Engineering & Computing | Ausgabe 4/2009

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Abstract

The aim of this study was to investigate the biomechanical interactions between cuspal preparation designs and cement thickness in a cusp-replacing ceramic premolar restoration. The cavity was designed in a typical MODP (mesial-occlusal-distal- palatal) restoration failure shape when the palatal cusp has been lost. Twelve 3D finite element (FE) models with four cavity preparations (without coverage and with buccal cuspal coverage in 1.0, 1.5 and 2.0 mm reducing in cuspal height) and three cement thicknesses (50, 100 and 150 μm) were constructed to perform the simulations. The results indicated that enamel and cement stresses in designs with no buccal cusp replacement or a 1.0 mm thick buccal cusp replacement were higher than the designs with 1.5 and 2.0 mm thick replacement. No apparent differences were found in the dentin, enamel, and cement stresses based on cement thicknesses of 50, 100, or 150 μm. This study concluded that when cusp replacement is indicated, reduction of the buccal cusp by 1.5 mm at least could reduce stress.

Vorheriger Artikel Mechanobiological bone growth: comparative analysis of two biomechanical modeling approaches

Nächster Artikel Normal and osteoarthritic hip joint mechanical behaviour: a comparison study

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Titel: Mechanical interactions of cuspal-coverage designs and cement thickness in a cusp-replacing ceramic premolar restoration: a finite element study
verfasst von: Yen-Hsiang Chang
Wen-Hsueng Lin
Wen-Chieh Kuo
Chia-Yu Chang
Chun-Li Lin
Publikationsdatum: 01.04.2009
Verlag: Springer-Verlag
Erschienen in: Medical & Biological Engineering & Computing / Ausgabe 4/2009
Print ISSN: 0140-0118
Elektronische ISSN: 1741-0444
DOI: https://doi.org/10.1007/s11517-008-0379-y

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