Computer assisted to determine the influence of connector design and stress distribution in Incoris TZI (Zirconia) fixed partial denture

摘要

In dentistry, computer assisted systems have been used to simulate and navigate the treatment planes i.e. computer-assisted design (CAD), which assists in minimizing the high costs of the product development process and allows the developers to simulate the same conditions that would take place under physical standards and conditions. In addition to the cost and time reduction benefits, CAD allows the product to be modified immediately before building prototypes and the final product. Finite element analysis (FEA) is another computer system, which used to determine stress distribution on teeth and jaw bones. Researchers also used FEA to analyze the effects of occlusal loads on crown margins and core materials of variable thickness. Finally the three dimensional (3-D) software packages are integrated with specific hardware systems to design and mill fixed partial dentures (FPDs). The present study are used all of the previous computer systems tools to assist the dentist and researchers to evaluate the effect of two connector designs on the fracture resistance and the stress distribution of the newly introduced monolithic full contoured Zirconia FPDs. The study concludes that radius of curvature at the occlusal embrasure had no significant effect on the fracture resistance and stress concentration of zirconia FPDs.