[A three-dimensional anisotropic finite element analysis of modified bar-clip implant-borne overdenture in the edentulous mandible under punching loads].
The stress distributions of the modified bar-clip implant-borne overdenture in the edentulous mandible were performed under punching loads with both porcelain and resin chosen as the restorative materials by means of three-dimensional anisotropic finite element method. The purpose of this study was to investigate the patterns of stress distributions and to compare the effect of different restorative materials on the stress distributions under punching loads. The results showed that the value of stress peaks in implants with porcelain restorations seemed higher than those with resin restorations. On the contrary, in the bone-implant interface had little difference, except a comparative uniform stress distribution found in resin restorations. It implies that resin restoration produces a cushioning effect on reducing the stress peaks in implants themselves under punching loads. Both porcelain and resin restorations can be chosen as the restorative materials because of a little influence on the stress peaks in bone-implant interface under punching loads.
Chao
Y
Y
College of Stomatology, West China University of Medical Sciences, China.
Wei
H
H
D000328:Adult; D015921:Dental Implants; D003776:Dental Porcelain; D003828:Denture, Overlay; D020342:Finite Element Analysis; D006801:Humans; D007575:Jaw, Edentulous / Q000628:therapy*; D008334:Mandible; D012116:Resins, Plant; D013314:Stress, Mechanical
D015921:Dental Implants; D012116:Resins, Plant; D003776:Dental Porcelain