title: Tightening characteristics for screwed joints in osseointegrated dental implants.
abstract: The significance of tightening abutment screws and gold cylinders to osseointegrated fixtures with the correct torque is demonstrated, and a simple relationship between applied torque and screw preload is derived by use of mechanical engineering principles. The principles of a number of tightening methods are outlined and assessments made of their accuracy. The difference between optimum and design torque is highlighted. The necessity and means of achieving optimum torque to ensure a reliable joint in clinical practice is discussed.
authors.affiliation: Department of Mechanical and Process Engineering, University of Sheffield, England.
authors.forename: R L
authors.initials: RL
authors.lastname: Burguete
authors.forename: R B
authors.initials: RB
authors.lastname: Johns
authors.forename: T
authors.initials: T
authors.lastname: King
authors.forename: E A
authors.initials: EA
authors.lastname: Patterson
mesh_terms: D000044:Dental Abutments; D003758:Dental Implantation, Endosseous / Q000379:methods* / Q000592:standards; D015921:Dental Implants; D017268:Dental Prosthesis Retention; D003799:Dental Stress Analysis; D006047:Gold Alloys; D006801:Humans; D013718:Tensile Strength
chemical_list: D015921:Dental Implants; D006047:Gold Alloys