A FINITE ELEMENT ANALYSIS ON THE DEFLECTION OF IMC IN THE TOOTH AND IMPLANT SUPPORTED FIXED PARTIAL DENTURE

Kim, Chang Ho; Choi, Ah Young; Kay, Kee Sung; Cho, Kyu Zong

Abstract

A lot of the research paper was reported about the result of influence of IMC (Intramobile connector)in the IMZ implant placed solely in the alveolar bone, but reports about the effect of IMC on functional load at state of connecting with natural teeth were rare. The major purpose of this study was find the mechanical character of IMC itself by using the finite element analysis program after simulated variance of condition connected with the natural teeth and implant on functional load. When first and second premolar was lost, IMZ implant was placed with a diameter of 3.3 mm and a length of 13mm with IMC in second premolar area. Rigid connection was done and the non-figid connection was located on the female part of the canine abutment and the implant respectively and then both the infraocclusion of 30um and the non-infraocclusion under the load of 40kg applied to the portion of the natural teeth, the pontic and the implant. The displacement and the stress of it was estimated and analyzed IMC itself of the rigid connection and the non-rigid connection was grouped. The following results were obtainded. 1. In all groups, the displacement of Y-axis was greater than that of X-axis and the aspect of displacement showed that IMC was displaced downward and to the center. 2. There was no differences in the displacement of IMC regardless of the connection type. 3. In the displacement of IMC, I 4 was the least, I 1 and I 3 are similar and I 2 was the greatest. 4. There was no differences in the peak value of miximal stress of IMC regardless of the connection type. 5. In the peak value of maximal stress of IMC, I 4 was the least, I 1 and I 3 ere similar, and I 2 was the largest.