This invention relates to a dental implant, comprising a main body part, an abutment part, and a connection part. The main body part has at least one thread zone and a main body outer diameter, and the at least one thread zone has a plurality of threads. The abutment part is used for fixing a false tooth. The connection part is used for connecting the main body part and the abutment part. The main body part, the connection part, and the abutment part are integrally formed. The connection part has a first zone connected with the main body part. The outer diameter of the first zone is smaller than the main body outer diameter tightly adjacent to the first zone, making the connection part of the dental implant of this invention have an indented structure to attract the attachment of the alveolar bone and the growth of soft tissues, to form a biological width at the junction of the soft tissues and the hard tissues to stop oral bacteria from invading the alveolar bone tissue, so as to solve the problem of conventional dental surgery prone to have bone atrophy and satisfy the clinical problem of front teeth aesthetics.本發明係關於一種牙科植體，包括：一本體部、一支台部及一連接部。該本體部具有至少一螺紋區及一本體外徑，該至少一螺紋區具有複數個螺紋。該支台部用以固定一假牙。該連接部用以連接該本體部及該支台部，該本體部、該連接部及該支台部係一體成型製作，該連接部具有一第一區域，該第一區域連接該本體部，該第一區域之外徑小於緊鄰於該第一區域之該本體外徑，使本發明牙科植體之連接部具有內縮結構，以吸引齒槽骨貼附及軟組織生長，使軟組織與硬組織交界區形成生物寬度，阻擋口內細菌侵入齒槽骨組織，以解決習知牙科易產生骨萎縮的問題，且可滿足前牙美觀的臨床問題。
