Effect of soft denture liner on stress distribution in supporting structures under a denture.
This study examined the effect of a soft denture liner on the distribution of stresses in the denture-supporting structures. Dentures without a linear and with three configurations of a soft liner were simulated by using a two-dimensional viscoelastic finite-element stress analysis. The stress intensity at functional force-bearing areas decreased when a soft denture liner was used. However, the stresses in the bone increased remarkably up to 3.0 seconds after loading. Because of the time-dependent effect of stresses applied to soft denture liners, denture patients who clench or brux may not benefit as greatly from soft denture liners. The study indicates that viscoelastic finite-element analysis is helpful for evaluating soft denture liners. Soft denture liners appear to be useful for improving the stress distribution in the supporting structures under dentures.
Department of Removable Prosthodontics, School of Dentistry, University of Tokushima, Japan.
F
F
Kawano
A
A
Koran
K
K
Asaoka
N
N
Matsumoto
D000539:Alveolar Process / Q000502:physiology*; D003799:Dental Stress Analysis; D003822:Denture Liners; D003824:Denture, Complete; D004548:Elasticity; D005881:Gingiva; D006801:Humans