Implant screw mechanics and the settling effect: overview.

One of the most serious and prevalent problems associated with the restorative aspect of dental implants is loosening and fracturing of screws. Implant screws should be retightened 10 minutes after the initial torque application as a routine clinical procedure to help compensate for the settling effect. Mechanical torque gauges should be used instead of hand drivers to ensure consistent tightening of implant components to torque values recommended by implant manufacturers.

[1]  R L Sakaguchi,et al.  Elongation and preload stress in dental implant abutment screws. , 1995, The International journal of oral & maxillofacial implants.

[2]  T Jemt,et al.  Loads and designs of screw joints for single crowns supported by osseointegrated implants. , 1992, The International journal of oral & maxillofacial implants.

[3]  M E Razzoog,et al.  PROVIDING OPTIMUM TORQUE TO IMPLANT PROSTHESES: A PILOT STUDY , 1993, Implant dentistry.

[4]  L A Lang,et al.  The effect of the use of a counter-torque device on the abutment-implant complex. , 1999, The Journal of prosthetic dentistry.

[5]  D. Gratton,et al.  EFFECT OF PRELOAD TORQUE ON THE ULTIMATE TENSILE STRENGTH OF IMPLANT PROSTHETIC RETAINING SCREWS , 1994, Implant dentistry.

[6]  J A Holloway,et al.  Implant screw mechanics. , 1998, Dental clinics of North America.

[7]  P P Binon,et al.  The effect of eliminating implant/abutment rotational misfit on screw joint stability. , 1996, The International journal of prosthodontics.

[8]  O C Tebrock,et al.  A measurement of torque values obtained with hand-held drivers in a simulated clinical setting. , 1993, Journal of prosthodontics : official journal of the American College of Prosthodontists.

[9]  J I Nicholls,et al.  Stress fatigue: basic principles and prosthodontic implications. , 1995, The International journal of prosthodontics.

[10]  S Winkler,et al.  The effect of implant diameter, restoration design, and occlusal table variations on screw loosening of posterior single-tooth implant restorations. , 2001, The Journal of oral implantology.

[11]  Kenneth G Boberick,et al.  Relationship between implant preload and screw loosening on implant-supported prostheses. , 2002, The Journal of oral implantology.

[12]  R. G. Craig.  Restorative dental materials , 1971 .

[13]  R L Sakaguchi,et al.  Nonlinear contact analysis of preload in dental implant screws. , 1995, The International journal of oral & maxillofacial implants.