Stress analysis of fiber-reinforced polyetheretherketone dental implants in four types of jawbone
Objective To study the stress of implants composed of carbon fiber-reinforced polyetheretherketone(CFR-PEEK)or glass fiber-reinforced polyetheretherketone(GFR-PEEK)for oral implantation in different jawbone type.Methods Each part model was obtained by software,including the upper anterior crowns,maxillary bone block,implants,screws and a-butments models.The above structures were accurately assembled to acquire four types of jaw-bone implant models.After being imported into software,the models were loaded on oblique forces of 100 N for mechanical analysis by three-dimensional finite element analysis.The von mises stress of cortical bone,cancellous bone and implants were recorded.Results The com-parison of von mises stress showed that compared with conventional titanium,CFR-PEEK and GFR-PEEK as implants were stressed beyond ultimate tensile and compressive strength in ClassⅠ,Ⅲ and Ⅳ peak jawsbone,whereas in Class Ⅱ jawsbone were better stressed.Conclusion In comparison with traditional implants,the fiber-reinforced polyetheretherketone dental im-plants were indication for class Ⅱ bone.Furthermore,due to overloaded stress in other types of bone condition,the strength of PEEK-based composite material is in demand of further modifi-cation.
implantcarbon fiber-reinforced polyetheretherketoneglass fiber-reinforced poly-etheretherketonebone qualityfinite element analysis
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