Effects of ultraviolet irradiation on the in vitro apatite-forming ability of nano crystalline titania layer 2

Abstract

Nano-crystalline titania (anatase) layers were prepared on titania substrates by chemical treatment and subsequent thermal treatment. The obtained sample was coded as CHT. Ultraviolet (UV) light was irradiated on CHT under ambient conditions for 1h. The UV-CHT and CHT were soaked in a simulated body fluid (SBF, Kokubo solution) for 1 day in order to evaluate their in vitro apatite-forming ability. CHT deposited more apatite particles than UV-CHT. This result indicated that the UV irradiation under ambient condition is not always effective for providing nano-crystalline titania layer with in vitro apatite-forming ability.