Medicine and Health

The Effects of Prosthetic Material on Stress Distribution


This research is a finite element analysis, which involved the evaluation of dental implant systems characterized by prostheses of a different material. The study sought to determine the difference in stress distribution on the crowns, abutments, implants, and bones, as determined by the material used in designing the crowns. For clarity and distinction, the setups were named system 1 and 2. System 1 consisted of metal-ceramic crowns, while zirconia crowns were used in system 2. In both setups, titanium abutments were used. An equal load of 50 N was applied in both systems, and the stress distribution on the bone, crown, implant, and abutment determined and recorded. The length and diameter of the implants were constant, 10 mm and 3.3 mm respectively. There was a significant difference in stress distribution between the two systems, as far as the bone, crown, and abutment were concerned. Therefore, the dental implant systems with metal-ceramic prostheses produce less stress on the alveolar bone and the abutment complex, and greater stress on the prosthesis. On the other hand, dental implant systems having zirconia prostheses produce higher levels of stress on the alveolar bone and the abutment complex and less stress on the prosthesis.