The Influence of Torque Tightening on the Position Stability of the Abutment in Conical Implant-Abutment Connections.
The influence of repeated system-specific torque tightening on the position stability of the abutment after de- and reassembly of the implant components was evaluated in six dental implant systems with a conical implant-abutment connection. An established experimental setup was used in this study. Rotation, vertical displacement, and canting moments of the abutment were observed; they depended on the implant system (P = .001, P < .001, P = .006, respectively). Repeated torque tightening of the abutment screw does not eliminate changes in position of the abutment.
Wiebke Semper
WS
Hogg
Kris
K
Zulauf
Jürgen
J
Mehrhof
Katja
K
Nelson
D001696:Biomechanical Phenomena; D000044:Dental Abutments; D059605:Dental Implant-Abutment Design; D017268:Dental Prosthesis Retention; D006801:Humans; D008422:Materials Testing; D012399:Rotation; D013499:Surface Properties; D019415:Torque