Mohamed Tharwat Hamed
Faculty of Dentistry, Department of Oral & Maxillofacial Prosthodontics, Saudi ArabiaPublications
-
Research
Influence of Coefficient of Friction on Stress Distribution in Implant Components and Surrounding Bone
Author(s): Mohamed Tharwat Hamed*, Hisham Abdullah Mously, Abou Bakr Hosam Hashem and Ghada Hussein Naguib
Introduction: The proper screw preload delivery is affected by several factors, among which the coefficient of friction is responsible for affecting the delivery of proper amount of preload torque. It is believed that the delivered preload increases due to reduction in coefficient of friction. Aims: The study aims to investigate maximum von Misses equivalent stresses generated within different parts of the assembly of ɸ 4.1 mm and 10 mm long Straumann implant. Material and Methods: The implant is inserted in place of the mandible first molar because of tightening screw. An analysis considered the screw surfaces as frictional and concluded that the frictional moment and the axial force opposed the advancement of the screw during its tightening. These loads were utilized for the implementation of thre.. Read More»