Abstract: Disclosed is an orthodontic implant having a head part formed at an upper end thereof, a connection part for connection of an elastic member, a tool engagement part for engagement of a tool, a uniform diameter part, and a screw part having a predetermined length to be driven into an alveolar bone, which are sequentially formed in a downward direction. The screw part of the present invention has a sectional shape of an inverted cone which is widened at an upper end thereof and pointed at a lowered end thereof, and a pre-selected upper portion of a thread of the screw part, which portion corresponds to one or more leads of the thread, is formed to have a flattened crest of a predetermined width, and the remaining portion of the threads of the screw part are formed to have sharp-edged crest.

Abstract: An implant for teeth orthodontics to fix firmly the orthodontic appliance ligated to malaligned teeth, to decide freely the pulling direction of a bracket mounted on malaligned teeth, and to minimize the size of the exposed part of an implant after implanting into dentine of teeth. The present invention is composed of a screw part at its bottom side to be implanted into dentine of teeth, a plain part at its middle side to be contacted with gingival tissue, and a head part at its upper side having a groove for manipulation of the implant by tools, a wire slot for a wire to be inserted therein, and a ligation part for a wire to be ligated.