Finite element analysis of a new system (IL) for supporting an implant-retained cantilever prosthesis.
A new system (the IL system) for supporting the distal extension of a cantilevered prosthesis is designed from a short implant and a special ball-type attachment. The finite element method was employed to analyze this system and the surrounding bone, as well as a conventional prosthesis, in two dimensions. Effective and maximum stresses in tension and compression were determined. A comparison of these quantities between the IL-supported prosthesis and a conventional prosthesis was carried out. It was observed that use of this system to support the distal extension of a cantilevered prosthesis dramatically lowers the stresses in the bone, cantilever, and implants. Therefore, this system may reduce failures within the implants, prostheses, and surrounding bone. Moreover, employment of a relatively long-span prosthetic extension in the posterior region of the jaw should be possible. This new system is recommended for completely and partially edentulous patients.
Lewinstein
I
I
Department of Prosthodontics, Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Israel.
Banks-Sills
L
L
Eliasi
R
R
D015921:Dental Implants; D003776:Dental Porcelain; D017267:Dental Prosthesis Design; D003799:Dental Stress Analysis; D003830:Denture, Partial, Fixed; D004548:Elasticity; D006047:Gold Alloys; D006801:Humans; D008954:Models, Biological; D010165:Palladium; D013314:Stress, Mechanical; D013718:Tensile Strength; D014025:Titanium
D015921:Dental Implants; D006047:Gold Alloys; D003776:Dental Porcelain; D010165:Palladium; D014025:Titanium