Hamed Safari

Learn More
STATEMENT OF PROBLEM A fundamental problem in fully understanding the dynamic nature of screw loosening is lack of recognition of the entire process of screw tightening and retightening. PURPOSE The purpose of this study was to explain the dynamic nature of abutment screw retightening by using finite element methods to investigate the effect of the(More)
STATEMENT OF PROBLEM To prevent screw loosening, a clear understanding of the factors influencing secure preload is necessary. PURPOSE The purpose of this study was to investigate the effect of coefficient of friction and tightening speed on screw tightening based on energy distribution method with exact geometric modeling and finite element analysis. (More)
STATEMENT OF PROBLEM Implants in posterior regions of the jaw require short dental implants with long crown heights, leading to increased crown-to-implant ratios and mechanical stress. This can lead to fracture and screw loosening. PURPOSE The purpose of this study was to investigate the dynamic nature and behavior of prosthetic components and preimplant(More)
  • 1