An implant is formed of titanium or titanium alloy, which osseointegration is embedded in the bone, the groove formed on the outer surface is formed to a width of 10μm or more 100μm or less, a depth of 1μm or more 30μm or less. The outer surface is formed to a surface roughness Sa is 1μm or more 5μm or less.本發明是以鈦或鈦合金形成並植入骨頭中以進行骨整合之固定物,其外表面具有寬度10μm以上、100μm以下且深度1μm以上、30μm以下之溝;外表面之三維粗糙度Sa形成為1μm以上、5μm以下。對外表面一面照射雷射光,一面掃瞄,而形成溝。並將外表面以酸蝕刻而粗化。10‧‧‧固定物10S‧‧‧外表面C‧‧‧前成骨細胞M‧‧‧細微溝(溝)
