A three-dimensional FEA of implants to investigate effects of angle implantation cases in implants success

Implants should be placed parallel to each other, paralleled to adjacent tooth and be vertically aligned with axial forces. However, in many clinical instances, achieving this may be impossible due to deficiencies in alveolar bone. Clinically, many implant cases with different angulation over the lower posterior area have been found. Therefore, implants must been placed in angled positions, complicating restoration using straight abutments but on the other hand, angled abutments have been introduced to correct such cases. As regards, the major load in the anterior region is being entered by tongue to teeth. According to particular situation of 2nd tooth that has low space and also height limitation due to the existence of the Sinus and Nerves in maxilla and mandible, respectively, therefore we examine the effect of angled installation of implants and use of the angled abutment. This paper was to analyze the bony stress with different types of implant`s fractures during the masticatory load applied by using the finite element method. We hope to discover desirable installation of implant and comparing the relation between design angle abutment, angled installation of implants and load distribution at the implant bone interface with vertical abutment implantation and evaluating how could decrease stress and promote better stress distribution on surrounding bone of single-unit dental implants. Therefore, 34 solid models of the lateral incisor were built up and were transferred to mesh models in FEM to perform a stress analysis.

Keywords:

Dental implant , FEM , Angle abutment , Angled installation