In the the present invention is dental implant having a fastening structure in which the fixed body (fixture) and the abutment (abutment) is elastically coupled relates to a dental implant for related, more particularly, to an artificial tooth, the fixture (fixture) and the combination of the abutment (abutment) of the lower fastening the shaft to the incision part because of the formed plurality of elastic legs of the locking projection or locking groove or signed stepped same fastening means is provided with an elastic fastening leg and the locking projection or locking groove or by has a lower fastening shaft portion a fastening means is formed non-fastening the supporting leg is not provided at the same time as fastening stepped or varying the vertical position of the fastening means to a plurality of the elastic fastening leg, it can reduce the size of the warpage allowed space required it fastened to some sections of the fixed body (fixture) abutment (abutment) lower fastening shaft elastic fastening securing the thickness of the legs than larger or elastic fastening leg formed on the fastened to a small diameter compared to the products of the prior art projection or the clamping groove or fastening stepped it is possible to set the size of the engaging means is formed in the same shape larger by increasing significantly the strength of the elastic fastening leg improve the effective shock absorption, durability or increase the clamping force significantly improve the retention and over the prior art can create a fixed body of a small diameter for the patient with a thin bone relates to a dental implant, which can facilitate the implant without the addition of extra bone graft.본 발명은 인공치아에 관련된 치과용 임플란트에 관한 것으로, 보다 상세하게는 고정체(fixture)와 지대주(abutment)가 탄성결합되는 체결 구조를 갖는 치과용 임플란트에 있어서, 고정체(fixture)와 결합되는 지대주(abutment)의 하부 체결축부에 절개부로 인해 형성된 다수의 탄성레그 중 체결돌기 또는 체결 홈 또는 체결 단턱 같은 체결 수단이 구비된 탄성 체결 레그와 체결 돌기 또는 체결 홈 또는 체결 단턱 같은 체결 수단이 구비되지 않은 비체결 지지 레그를 동시에 형성한 하부 체결 축부를
