| 摘要 |
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.
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