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>Stress Distribution in the Singlehyphen;Unit Osseointegrated Dental ImplantFinite Element Analyses of Axial and Offhyphen;Axial Loading
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Stress Distribution in the Singlehyphen;Unit Osseointegrated Dental ImplantFinite Element Analyses of Axial and Offhyphen;Axial Loading
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机译：Stress Distribution in the Singlehyphen;Unit Osseointegrated Dental ImplantFinite Element Analyses of Axial and Offhyphen;Axial Loading
NA;Occlusal overload may contribute to the extensive crestal bone loss often noted around latehyphen;failure dental implants. A particularly high risk of traumatic overload occurs with the posterior singlehyphen;unit implant restoration because the restoration itself is usually wider than the implant, creating the potential for a cantilever effect with high bending moments. The objective of this study was to evaluate the simulated effects of axial and offhyphen;axial vertical loads on stress gradients at the implantsol;bone interface of a singlehyphen;unit osseointegrated roothyphen;form endosseous dental implant. A twohyphen;dimensional finite element model was generated. A 490hyphen;N load was applied at 0, 2, 4, and 6 mm from the vertical axis of the implant. Offhyphen;axis loading resulted in greatly increased compressive stresses within the crestal cortical bone on the side to which the load was applied and similarly increased tensile stresses on the side opposite the load. These stresses increased considerably with each mm increase off axis of the applied load. These data suggest that offaxis loading of singlehyphen;unit implant restorations provides a significant contribution to increased stresses at the implantsol;cortical bone interface. The distance off axis at which the load is applied is also significant. lpar;Implant Dent 2000semi;9colon;207hyphen;218rpar;
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