Clinical and Radiographic evaluation of Implants Supporting Mandibular Overdentures Using Two Different Occlusal Schemes

Abstract

This study was carried out on ten implant supported mandibular overdentures divided into two groups " five dentures each". Bilateral balanced occlusion was selected with cuspid teeth used for the dentures of one group of the patients and with flat teeth used for the dentures of the other group. For every patient two implants were inserted in the mandibular canine areas to support the mandibular overdentuers using the submerged implant system. The osseointegrated implants were evaluated clinically and radiographically using the direct digital radiography " Digora system " for the densitometric and lineal analysis of the alveolar bone mesial and distal to every osseointegrated implant , the measurements for each group of patients were done at the time of implant loading, three months, six months and one year after loading. For every case the vector of the four measurements ( one measurement for each side of every implant) is calculated . The means , t-test values and standard deviation for the vectors of the readings of the overdentures of each group were calculated for both the densitometric and lineal analysis separately. By comparing the results of the densitometric and lineal analysis for the cases with the cuspid teeth occlusion according