Design Evaluation of Expandable Implants by the Finite Element Method

유한요소법에 의한 근단부 팽창형 임프란트 모델의 설계평가

The expandable implant employs an inner expansion screw in order to expand several legs of implant. Compressive stresses are produced at the bone tissue surrounding the implant, and the contact area between the implant and the bone tissue is increased, which result in increased resistance to horizontal and vertical pressure loads. The stress distribution in implant is also an important factor. Three types of implant models including an existing one have been investigated by using the Finite Element Method, and an improved design model has been suggested.