An implant fixture according to the present invention comprises: a fixture body (110) having a guide hole (115) formed into the central axis thereof so that the bottom portion thereof is implanted in the alveolus, wherein a shaft-coupling portion (127) of an abutment (120) is inserted and shaft-coupled in the top end thereof and a fastening adapter (130) detachably installed inside the guide hole (115) to resiliently press against the outer surface of the shaft-coupling portion (127) of the abutment (120) and fix same. The present invention does not use an existing screw-type coupling method, but uses the fastening adapter provided inside the guide hole of the fixture body to detachably couple the fixture and the abutment so that a dental procedure is made convenient, the fastening of the abutment during the procedure is performed while the abutment is positioned accurately, a resilient member is inserted in a cut slot (127a) of the shaft-coupling portion in order to absorb chewing pressure when needed and reduce stress generated between the fixture and the alveolus when occlusal force is exerted, thereby minimizing a large amount of stress on the surface of the cortical bone that is a cause leading to alveolar bone loss, the sensation experienced by a patient of having a foreign object in his/her mouth is minimized, and the service life of the implant unit can be extended.La présente invention concerne une fixation dimplant comprenant : un corps de fixation (110) présentant un trou de guidage (115) formé dans son axe central de sorte que sa partie inférieure est implantée dans lalvéole dentaire, une partie daccouplement par tige (127) dune butée (120) étant insérée et couplée par tige dans son extrémité supérieure et un adaptateur de fixation (130) installé de manière détachable à lintérieur du trou de guidage (115) pour appuyer de manière résiliente contre la surface externe de la partie daccouplement par tige (127) de la butée (120) et fixer celle-ci. La présent
