The present invention relates to oligopeptides applicable to a dental implant, which are selected from the group consisting of PEP7 (SEQ ID No. 1), PEP71 (SEQ ID No. 2), EP72 (SEQ ID No. 3), PEP73 (SEQ ID No. 4), PEP74 (SEQ ID No. 5), PEP75 (SEQ ID No. 6) and PEP76 (SEQ ID No. 7). The oligopeptides of the present invention have very high reactivity for a BMP-specific receptor to increase osteoblastic differentiation and calcification, thereby showing improved osteointegration and osteogenesis.