Fracture of restored teeth is a problem in restorative dentistry since it has been estimated that 92 percent of fractured teeth have been previously restored. In a restored tooth, the stresses that occur at the tooth-restoration interface during loading could become large enough to fracture the tooth and/or restoration. The tooth preparation process for a dental restoration is therefore a classical optimization problem: tooth reduction must be minimized to preserve tooth tissue whilst stress levels must be kept low to avoid fracture of the restored tooth. The objective of the present study was to propose alternative optimized designs for a second upper premolar cavity preparation by means of structural shape optimization based on the finite element method and biological adaptive growth. Restored tooth models using the optimized cavity shapes exhibited significant reduction of stresses along the tooth-restoration interface. In the best case, the maximum stress value was reduced by more than 50 percent.
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ASME 7th Biennial Conference on Engineering Systems Design and Analysis
July 19–22, 2004
Manchester, England
ISBN:
0-7918-4174-X
PROCEEDINGS PAPER
Structural Optimization of Dental Restorations Using the Principle of Adaptive Growth
Guillaume Couegnat,
Guillaume Couegnat
Ecole des Mines D’Albi, Carmaux, France
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Siu L. Fok,
Siu L. Fok
University of Manchester, Manchester, UK
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Jonathan E. Cooper,
Jonathan E. Cooper
University of Manchester, Manchester, UK
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Alison J. E. Qualtrough
Alison J. E. Qualtrough
University of Manchester, Manchester, UK
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Guillaume Couegnat
Ecole des Mines D’Albi, Carmaux, France
Siu L. Fok
University of Manchester, Manchester, UK
Jonathan E. Cooper
University of Manchester, Manchester, UK
Alison J. E. Qualtrough
University of Manchester, Manchester, UK
Paper No:
ESDA2004-58069, pp. 495-503; 9 pages
Published Online:
November 11, 2008
Citation
Couegnat, G, Fok, SL, Cooper, JE, & Qualtrough, AJE. "Structural Optimization of Dental Restorations Using the Principle of Adaptive Growth." Proceedings of the ASME 7th Biennial Conference on Engineering Systems Design and Analysis. Volume 2. Manchester, England. July 19–22, 2004. pp. 495-503. ASME. https://doi.org/10.1115/ESDA2004-58069
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