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Full-Text Articles in Medicine and Health Sciences
The Use Of Titanium In Dentistry, Toru Okabe, Hakon Hero
The Use Of Titanium In Dentistry, Toru Okabe, Hakon Hero
Cells and Materials
The aerospace, energy, and chemical industries have benefitted from favorable applications of titanium and titanium alloys since the 1950's. Only about 15 years ago, researchers began investigating titanium as a material with the potential for various uses in the dental field, mainly because of its proven biocompatibility and other attractive properties. The present review examines updated information on the use of titanium in a major area of dentistry. Titanium-based alloys used for casting, casting equipment and procedures, casting investment materials, and porcelain veneering are discussed. Information about advances made in techniques other than casting, which could widen the applications of …
Room Temperature Aging Of Pd-Cu-Ga Dental Alloys, William A. Brantley, Zhuo Cai, Qiang Wu, Alan B. Carr, John C. Mitchell
Room Temperature Aging Of Pd-Cu-Ga Dental Alloys, William A. Brantley, Zhuo Cai, Qiang Wu, Alan B. Carr, John C. Mitchell
Cells and Materials
Specimens of three Pd-Cu-Ga dental alloys cast five years ago and subsequently stored at room temperature were reexamined and observed to have lower amounts of the eutectic constituents in the near-surface region than originally present, along with other microstructural changes. This previously unreported room temperature aging behavior of these alloys is attributed to the presence of high-diffusivity paths in the non-equilibrium ascast eutectic structures and to the essential role of the surface for the vacancy diffusion mechanism. These results may have important clinical significance for the ill vivo corrosion resistance and long-term biocompatibility of the Pd-Cu-Ga alloys.