Aim: To investigate the effects of sandblast and acid etching treatments on Ti and Ti6Al4 V surface morphology and osteoblast bioactivity. Methods: Samples were divided into four groups: Ti control group,SLA Ti group,Ti6Al4 V control group,and SLA Ti6Al4 V group. The control groups were polished with different rough emery papers,and the SLA groups were sandblasted by Al3O2 particles and acid etched by using a mixture of hydrochloric acid and sulfuric acid. After above treatments the sample surface morpholog...