Force Transfer by Implant Supported Bar Retained Overdentures Using Three dimensional Photoelastic Stress Analysis
소속 상세정보
신상완/Harold W. Preiskel
Martin Sherriff
KMID : 0362719950330010047
Abstract
Three photoelasic resin edentulous mandible analogues with mandible analogues with two Branemark titanium fixtures in the canine regions were constructed to evaluate the magnitude and direction of stresses resulting from two methods of employing
bar
attachments. After stress freezing under unilateral loading of 5Kg, three-dimensional photoelastic stress analysis was undertaken.
Bar attachments without spacers produced higher stresses on structures around the implant than designs with spacers. Torquing stresses induced by cantilevered extensions were surprisingly high and these torquing stresses were concentrated on the
distocervical contact point and labio-apical contact point between the implant and the surrounding structures.
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