الفهرس 
Treatment Options for completely edentulous patientsOnly 14 pages are availabe for public view
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Abstract
A three-dimensional finite element analysis study was carried out to evaluate the effect of splinting dental implants on the stress distribution in the supporting structures in implant supported overdentures supported by two implants and if stress distribution would differ if the bar was used for both retention and support (represented by the model with surface contact between the bar and the overdenture) or for support only (represented by the model with line contact between the bar and the overdenture) where in :
Model 1: the implants were splinted with a bar with line contact between the bar and overdenture.
Model 2: the implants were splinted with a bar with surface contact between the bar and overdenture.
Model 3: the implants were unsplinted.
A model of the mandible and overdenture was constructed. Two interforaminal implants were placed in this model. The implants were either independent or connected with a bar. The relation of the bar and overdenture was either having a surface or a line contact.
The material properties for compact bone, spongy bone, titanium alloy, cobalt chromium alloy, acrylic resin and air were identified.
The models were meshed and were restrained at their inferior border to avoid total body displacement. Static vertical tissue-ward loads of 100N were applied unilaterally and bilaterally for the three models and the analysis was conducted.
The stresses induced in bone around the implants were collected and tabulated to compare between splinte and unsplinted designs.
The results revealed that no difference between splinted and unsplinted implants under bilateral loading while there was a difference under unilateral loading. No difference was observed when the contact between the bar and the overdenture was either point or surface contact, i.e. when the bar was used as either a supportive or a supportive and retentive element respectively.