The purpose of the present invention is to provide a dental implant system which interposes a connecting factor in a circular shape between an artificial dental root and an abutment, and can combine the abutment with the artificial dental root without a connecting screw. The present invention comprises: an artificial dental root (110) which has an insertion unit (111) which is inserted into and fixed to a jaw bone, and an abutment mounting unit (112) which is provided on the insertion unit (111); an abutment (120) which comprises an inner surface unit (120a) which is coupled to accommodate the abutment mounting unit (112) at an interval, and an outer surface unit (120b) on which an artificial tooth is put; and a circular connecting factor (130) which comprises an inner side cross section (130a) close to the abutment mounting unit (112) for combining the abutment (120) with the artificial dental root (110), and an outer side cross section (130b) close to the inner surface unit (120a).COPYRIGHT KIPO 2018본 발명은 턱뼈에 고정되게 식립되는 식립부(111) 및 식립부(111) 위에 마련되는 지대주 장착부(112)를 갖는 인공치근(110), 지대주 장착부(112)가 틈새를 두고 수용되게 결합되는 내면부(120a) 및 인공치아가 얹히게 되는 외면부(120b)를 갖는 지대주(120); 및 지대주(120)를 인공치근(110)에 결합하기 위하여 지대주 장착부(112)에 밀착되는 내측단면(130a) 및 내면부(120a)에 밀착되는 외측단면(130b)을 갖는 환형의 연결요소(130)를 포함한다.