PMID: 8603210Sep 1, 1995Paper

Cross-sectional design and fatigue durability of cantilevered sections of fixed implant-supported prostheses

Journal of Prosthodontics : Official Journal of the American College of Prosthodontists
R B Stewart, G H Staab

Abstract

Characterizing the fatigue behavior of cantilevered implant-supported prostheses requires an understanding of both the material and its intended application. The relationships between applied load, component geometry, and the fatigue characteristics of a specific material often can be difficult to establish. Four different cross-sectional designs of cantilevered frameworks used clinically were tested for fatigue durability, and the results were compared with theoretical tip deflections and stresses. Fatigue tests were conducted on specimens with I-, U-, and L-shaped and elliptical cross-sections after static stress analysis. Specimens with uniform cantilevered length were sprued, invested and cast from the same high-palladium alloy. Statistical results, SEM evaluation of fracture surfaces, and theoretical predictions provided further insight into the framework design. Based on intraoral space restrictions, corrections for dimensional changes inherent in casting, the mean number of cycles to failure for each cross-sectional geometry, and the performance of design groups as predicted by static analysis can be ranked in order from best to worst as I, L, U, and then elliptical. SEM evaluation showed varying degrees of porosity and ...Continue Reading

References

Jul 1, 1992·The Journal of Prosthetic Dentistry·R B StewartE Y Chao
Feb 1, 1986·Mayo Clinic Proceedings·W R LaneyP I Brånemark
Mar 1, 1994·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·G H Staab, R B Stewart

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Citations

Apr 12, 2003·The Journal of Prosthetic Dentistry·Donna M Hecker, Steven E Eckert
Oct 15, 2014·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Steven J SadowskyDonald A Curtis
Mar 1, 2019·International Journal for Numerical Methods in Biomedical Engineering·Jaejong ParkAlok Sutradhar

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