چكيده فارسي :
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.
