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Influence of torque tightening on the position stability of the abutment in conical implant-abutment connection.


Semper Hogg W, Zulauf K, Mehrhof J, Nelson K

Int J Prosthodont 2015;28:538-41 (Grant CF21101)

Abstract

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.

SOURCE

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