To make an artificial bone or an artificial fang implant adapt and fix to a living body quickly when inserted in the living body or in a jawbone.
Crystallized stoichiometrical hydroxyapatite is coated as a bottom layer by laser application on the surface of a metal which constitutes an implant to prevent elution of the metal in the living body and to improve biocompatibility, and on the top of the coated metal, a natural bone or a natural tooth as it is or ion-substitutional hydroxyapatite having a similar composition of the above is continuously coated as an upper layer to speed up the fixation and osteoinduction. For coating with a similar composition of the upper coating layer, a target made of a stable crystal with the similar composition is made and accurately transcribed by laser application. For coating on the implant, targets of the bottom layer and the upper layer are disposed in parallel in a vacuum membrane forming chamber 21 and the targets are irradiated with laser beams successively for effective execution.
MIFUNE HIDEO
HIGUCHI YUICHI
ASAHI INTECC CO LTD