Estimation of the retainer height biomechanical contribution in posterior resin-bonded fixed partial dentures: a structural-thermal coupled finite element analysis.

Medical & Biological Engineering & Computing
Wen-Jen Chang, Chun-Li Lin

Abstract

This study determines the RBFPD (resin-bonded fixed partial dentures) biomechanical aspects to retainer height using structural-thermal coupled finite element (FE) analysis under normal (37°C) and high (51°C) oral temperatures. Three RBFPD FE models with different retainer heights (100, 75, and 50% of the distance from 2 mm above the CE (cementum-enamel) junction to the occlusal surface) were created using image processing, contour stacking, and mapping mesh procedures. After FE model validation, the maximum first principal and von Mises stresses in the remaining tooth (σ(T)) and prosthesis (σ(P)), were recorded for all models under structural-thermal coupled analyses. The simulation results showed that the σ(T) and σ(p) values decreased with greater retainer height as a result of the increasing prosthesis stiffness and maximizing bonding area between the enamel and retainer at normal oral temperature (37°C). However, no significant stress differences were found according to the retainer height varying dimensions at high (51°C) temperatures. The RBFPD retainer height biomechanical response is dominated by the structural analysis result (at 37°C) and it is recommended that the prosthesis retainer have as great a height as possib...Continue Reading

References

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Citations

Aug 6, 2013·Biomechanics and Modeling in Mechanobiology·Kuo-Chih SuChih-Han Chang
Dec 15, 2015·Medical & Biological Engineering & Computing·Mateus Bertolini Fernandes Dos SantosAtais Bacchi
Mar 13, 2013·Computer Methods in Biomechanics and Biomedical Engineering·Kuo-Chih SuChih-Han Chang
Jul 14, 2017·British Dental Journal·G R Balasubramaniam
Oct 1, 2010·Journal of Oral Science·Miyuki YamashitaHideo Matsumura

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