PROBLEM TO BE SOLVED: To provide a clasp for partial denture.SOLUTION: One end side of a wire member is used as a connection part for connecting artificial teeth of a partial denture 22 to an artificial tooth base. On the other end of the wire member, a long ellipse sphere 19 which is positioned in a tooth root gap part of the adjacent teeth when the partial denture is fitted in oral cavity and engages the partial denture is arranged in such a manner that a major axis direction thereof is arranged in an extending direction of the wire member. The connection part of the wire member and a middle section of the long ellipse sphere are formed as a vertical hook folded so as to position along tooth crown and tooth gap of the adjacent teeth when the partial denture 22 is fitted in oral cavity.SELECTED DRAWING: Figure 3【課題】部分床入れ歯のクラスプを提供する。【解決手段】ワイヤ部材の一端側を、該部分床入れ歯２２の人工歯を植立させた義歯床に連接させる連接部とし、前記ワイヤ部材の他端には、該部分床入れ歯の口腔内装着時に前記隣接する歯牙の歯根間隙部に位置させて該部分床入れ歯を係止する長楕円球状体を、その長軸方向が前記ワイヤ部材の延在方向に位置するようにして設け、前記ワイヤ部材の前記連接部と長楕円球状体１９との中間部は、該部分床入れ歯２２の口腔内装着時に前記隣接する歯牙の歯冠・歯列間隙に沿って位置するように屈曲させる垂直鉤として形成する。【選択図】図３
