Subjecting pure titanium and Ti-6A1-4V alloy to firing under various conditions, the extent of dissolution of their constituent elements was measured using ICP.
1. Even with variation of firing conditions, no remarkable differences were observed in the amount of titanium, aluminium and vanadium element dissolved in each solution in which the metals were immersed.
2. Upon immersion in NaCl solution, human saliva, lactic acid solution or hydrochloric acid, the extent of dissolution of titanium and vanadium element increased in that order. The extent of dissolved of aluminium element increased upon immersion in NaCl solution, lactic acid solution, hydrochloric acid or human saliva, in that order.
3. Although the extent of dissolution of titanium element was small, that observed for vanadium element which are believed to be cytotoxic was comparatively larger.
4. The extent of dissolution of aluminium and vanadium element were greater than that of titanium.