PROBLEM TO BE SOLVED: To provide an orthodontic appliance of a mouthpiece type, capable of solving or reducing reversed occlusion even in a permanent dentition period.SOLUTION: An orthodontic appliance is composed of a base 1 having a U-shape in a plane view, and put between tooth rows 61 and 71 of the upper jaw 6 and the lower jaw 7, an upper jaw side outer peripheral wall 2 projecting upward from the outer peripheral edge of the base 1 and contacting the upper lip 62 from the inside, a lower jaw side outer peripheral wall 3 projecting downward from the outer peripheral edge of the base 1, contacting the lower lip 72 from the inside, and contacting the front tooth part 711 of the lower jaw 7 from the outside, and an upper jaw side inner peripheral wall 4 projecting upward from the inner peripheral edge of the base 1 and contacting the front tooth part 611 of the upper jaw 6 from the inside. The distance between the inner peripheral surface of the upper jaw side outer peripheral wall 2 and the outer peripheral surface of the upper jaw side inner peripheral wall 4 is larger than the thickness of the tooth row 61 of the upper jaw 6.COPYRIGHT: (C)2014,JPO&INPIT【課題】永久歯列期においても、反対咬合を解消又は軽減できるマウスピースタイプの歯科矯正装置について、検討した。【解決手段】上顎6及び下顎7の歯列61,71に挟まれる平面視U字状のベース1と、前記ベース1の外周縁から上方に突出して上唇62に内側から当接する上顎側外周壁2と、前記ベース1の外周縁から下方に突出して下唇72に内側から当接し、かつ下顎7の前歯部711に外側から当接する下顎側外周壁3と、前記ベース1の内周縁から上方に突出して上顎6の前歯部611に内側から当接する上顎側内周壁4とから構成され、上顎側外周壁2の内周面と上顎側内周壁4の外周面とが上顎6の歯列61の厚みより離れていることを特徴とする歯科矯正装置である。【選択図】図7
