PROBLEM TO BE SOLVED: To provide an anchor for orthodontics which is not rotated even when a large force is added by an orthodontic wire after implantation to an alveolar bone, and which can be easily removed after completion of orthodontics.SOLUTION: The anchor for orthodontics is formed of a wedge-like body part 1 that is tapered toward the alveolar bone, and a head part 2 projecting from the body part 1 on the opposite side to the alveolar bone. A cross-section of the body part 1 is formed in such a way that one side makes a concave arc of the same radius with an internal angle of less than 180 deg., and that sides 1a and 1a located on both sides of the arc-forming side start from both ends of the arc forming side to extend in parallel to a line connecting the center of a circle of the arc to the center point of the arc, or in such a way as to approach the line, without forming a concave part on the opposite side to the arc.COPYRIGHT: (C)2010,JPO&INPIT【課題】歯槽骨への植立後に矯正ワイヤーによって大きな力を受けても回転することがなく、また歯列矯正後には容易に取り外すことができる歯列矯正用アンカーを提供する。【解決手段】歯列矯正用アンカーを歯槽骨側に向けて先細りした楔状をなす本体部1と本体部1の歯槽骨と反対側に突設された頭部2とから構成させ、本体部1の横断面が、一辺が内角が180度未満の凹状の同一半径の円弧をなし、円弧をなす辺の両側に位置するそれぞれの辺1a,1aが円弧を形成する円の中心と円弧の中心点とを結んだ線と平行か又は互いに線に近づくように円弧をなす辺の両側から始まり円弧と反対側に凹部を作らないように形成させる。【選択図】図1
