The present invention provides a dental implant that can be fitted immediately into a tooth socket after native tooth extraction and preparation of the tooth socket and without having to drill into the bone. The dental implant comprises a core enveloped by an expandable anchor comprising a plurality of joined segments. The core is displaced within an inner chamber of the anchor and generates an expansion force causing the joined segments to be displaced linearly away from the central axis of the implant where the coronal and apical ends of each joined segment are displaced in parallel paths normal to the central axis of the implant.