PROBLEM TO BE SOLVED: To provide a plastic tray for taking an impression of a local area, which prevents lift or separation from the tray for an impression material after curing, and which is used when the impression of the local area in the oral cavity is taken.SOLUTION: A plastic tray for an impression of a local area includes: an outer wall 2 which assumes a gently curved shape, which has a length corresponding to at least three continuous teeth, which is erected on the outside of a curvature of a bottom 1 forming a plane with almost the same width, and the height of which is gradually decreased on the side of one end to become equal to the height of the bottom 1 and an inner wall 3 which is erected on the inside of the curvature of the bottom 1 and the height of which is gradually decreased on the sides of both ends to become equal to the height of the bottom 1. A rim 4 with a specific height is provided on the side of the bottom 1 along upper ends of the outer and inner walls 2 and 3. Slot-like through-holes 5 with a specific width, which reach the bottom 1 from directly below the rim 4, are formed at almost regular intervals in a specific gap in the outer and inner walls 2 and 3. A circular through-hole 6 with a specific diameter is formed in a specific position in the bottom 1. Slot-like end-side through-holes 7 with a specific width and a specific length are provided at both the ends of the bottom 1 in such a manner as to be perpendicular to the axial direction of the bottom 1, respectively.COPYRIGHT: (C)2014,JPO&INPIT【課題】硬化後の印象材のトレーから浮き上がりや剥離のない口腔内の局部の印象採得を行う際に用いるプラスチック製の局部印象採得用のトレーを提供する。【解決手段】緩やかな弯曲状で少なくとも連続した3本の歯に対応する長さで略同一幅の平面を成す底部1の弯曲の外側に立設されており且つ一端側が高さが徐々に減少して底部1と同じ高さとなる外壁2と底部1の弯曲の内側に立設されており且つ両端側が高さが徐々に減少して底部1と同じ高さとなる内壁3とを有するプラスチック製の局部印象用トレーであって、外壁2と内壁3との上端に沿って底部1側に特定高さのリム4を設けると共に、外壁2と内壁3とにリム4の直下から底部1に達する特定幅の長穴状の貫通穴5を特定間隙で略等間隔になるように形成し、且つ底部1には特定位置に特定直径の円形貫通穴6を形成し、底部1の両端に特定幅で特定長さの長穴状の端部側貫通穴7を底部1の軸方向と直角に設ける。【選択図】図1
