| 摘要 |
PURPOSE: A nut for reinforcement of orthodontic fixing treatment is provided, which increases endurance against a rotational power loaded to the nut after implantation of the nut in dental root, thereby improving treatment efficiency. CONSTITUTION: The nut called as micro-implant nut comprises head portion(5) and angled portions(2), circular portion(6) and threaded portion(3); additionally, several longitudinal grooves(4) formed at top end of the threaded portion(3) immediately below the angled portion(2). The implant nut is designed to fill compact bone in the grooves when the compact bond is regenerated in a constant time period after implantation of the nut into the dental root in order to endure rotational power as well as traction force.
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