The palate side fixed installation for dentistry reform where the installation removal to the palate is easy is offered. The palate installation section which removal and re-installation possibly is installed it has (3) to the palate. The elastic piece of pair (4) it possesses the palate installation section. The elastic piece of pair, one end side connecting mutually, as the connected section is formed, extending has been present mutually in the same direction. On the above-mentioned connected section side of the palate installation section, the above-mentioned in plant which as playing the space of possible size (S1) it forms, the space (S1) arranges on the one hand in plant inside the point of the elastic piece of pair (4a) from this touching to the particular in plant the occasion where it displaces, to the direction which leaves as, this connection part which regulates above-mentioned displacement the 1st installation section which it has (6) is formed, the point of the elastic piece of the above-mentioned pair (4a) side, gets near to the point at the same time interval between the elastic pieces of pair to become narrow, the elastic piece of pairThe holding possible elastic support section is formed the other in plant with the attaching power which faces on the above-mentioned connected section side by elastic power.口蓋への取り付け・取り外しが容易な歯科矯正用口蓋側固定装置を提供する。口蓋へ脱着可能に取り付ける口蓋取付け部(3)を備える。口蓋取付け部は一対の弾性片(4)を有する。一対の弾性片は、一端部側が互いに連結して連結部を構成すると共に互いに同方向に延在している。口蓋取付け部の上記連結部側に、一方のインプラントを遊挿可能な大きさの空間(S1)を形成すると共に、空間(S1)内に配置した上記インプラントが一対の弾性片の先端部(4a)から離れる方向へ変位する際に当該インプラントに当接して上記変位を規制する当接部分(6)を備えた第1取付け部を形成し、上記一対の弾性片の先端部(4a)側が、先端部に近づくにつれて一対の弾性片間の間隔が狭くなり且つ一対の弾性片の弾性力で他方のインプラントを上記連結部側に向かう付勢力を持って挟持可能な弾性支持部を形成する。
