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Nowadays, dental implant is the first therapeutic choice of the edentulous patients. A firm functional soft tissue seal between the transmucosal part of implants and the surrounding soft tissues is significant to the long-term survival of the implant as well as the stable osseointegration. There are many research on the osseointegration, but less in the transmucosal part of the implant. In this review, we combined the implant neck design of our own with the international study in this field, in order to discuss the relationship between the implant neck design and the marginal bone loss, interact with the soft tissue, the antibacterial activity.