Specially Designed Copings for Stability of Overdentures

Aim: The aim of this study was to describe the process of fabrication of specially designed MCOP and define their function in improving of stability. Purpose: In many clinical situations, exposed dentin surfaces of abutment teeth were restored with metal copings prior to fabrication of the overdentures. The aim of this study was to examine a procedure for fabrication of specially designed metal copings and assess their role in improving retention and stability of overdentures. Material and Methods: Two groups of patients were analyzed in this study: the experimental group consisted of 31 patients (-18 partially edentulous women aged 50 to 64 yrs., and 13 partially edentulous men, aged 53 to 65 yrs). There were 73 endodontically treated teeth and 8 vital abutments. The control group included 31 conventional partial acrylic resin denture wearers’ (-10 partially edentulous men and 21 women, aged 53 to 65 yrs). Milled retentive shoulders at right angles to the root axis were designed in COP for posterior abutments to have beneficial effect on the periodontal apparatus. Results: Retroalveolar radiographs that were made at the baseline and several weeks after cementing of MCOP were control for a decent position of the coping. The individual Cronbach’s alpha test result was 0.870 and 0.951 for experimental and control questionnaires, respectively. Conclusion: The results of this study indicated that metal copings provided stability of overdenture construction in selected patients.