Host: The Japanese Society for Dental Materials and Devices
Commercial pure titanium (Ti) was annealed in an ambient air, and formed oxide films on its surface. A part of the specimens were removed the oxide films by abrasion. The both of the specimens were immersed in APF, which was mixed solution of 2.0% NaF and 1.7% H3PO4. The effect of surface oxide films, which were formed by annealing, on degradation of titanium in APF was measured by thermal desorption spectrometer. Amounts of hydrogen in the specimens could detect as a function of heating temperature. The different detection curves were obtained between the specimens with and without the oxide films by annealing. It was concluded that the s
