Estimation of the retainer height biomechanical contribution in posterior resin-bonded fixed partial dentures: a structural-thermal coupled finite element analysis |
| |
Authors: | Wen-Jen Chang Chun-Li Lin |
| |
Institution: | (1) Department of Information Management, Chang Gung University, 259 Wen-Hua 1st Road, Kwei-Shan, Tao-Yuan, 333, Taiwan;(2) Department of Biomedical Engineering, National Yang-Ming University, No. 155, Sec. 2, Linong Street, Taipei, 112, Taiwan |
| |
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 (σT) and prosthesis (σP), were recorded for all models under structural-thermal coupled analyses. The simulation results showed that the σT and σp 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 possible to decrease the stress values. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|