Biomechanics of internal connection in mandibular implant-supported prosthesis under effect of loadings and number of implants: A 3D finite element analysis.

Introduction: The success of bone-implant prostheses depends on several factors, among them an adequate distribution and passive adaptation of occlusal loading.

Objective: this study evaluated the stress distribution in mandibular implant-supported prosthesis with internal connection morse taper interface, under effect of number of implants (4 or 5) and loadings (bilateral 100 N, bilateral 300 N).

Materials And Methods: the virtual models were subjected to analysis by 3D finite element method, across four experimental conditions.

Biomechanical Analysis of Implant-Supported Prostheses with Different Implant-Abutment Connections.

This study evaluated the influence of implant-abutment connections on stress distribution through 3D finite element analysis. Three-dimensional models of an implant-supported fixed prosthesis in the jaw retained by four implants with different connection systems (external hex and Morse taper) were analyzed. External hex connection promoted higher microstrain values, which were concentrated on the cervical region of the distal implants extending into the trabecular bone, while Morse taper connection provided a more even distribution of the microstrain on all implants.

Stress evaluation of implant-abutment connections under different loading conditions: a 3D finite element study.

This study evaluated the effects of axial and oblique occlusal loading on implant-supported partial dentures with different connection systems (external hexagon, internal hexagon, and Morse taper). Upon axial loading, all systems presented similar stress values. Stress values increased under oblique loading.