To provide a partial denture which can be worn without using a denture base like a partial floor denture without cutting of remaining teeth or an alveolar bone like a crown bridge or an implant, and which can be detached . SOLUTION: The partial denture according to the present invention supports an artificial tooth and an artificial tooth, and is configured to be openable and closable. In an open state, the partial denture separates so that a tooth row can be inserted and, in a closed state, And a locking structure for releasably fixing the closed state of the pair of engaging members, wherein at least one of the engaging members of the pair of engaging members includes a pair of engaging members , A first engaging portion which engages with an inclined portion which is inclined in a direction which expands towards the root of each of the plurality of teeth in the tooth row and which is opposite to the inclined portion of at least one tooth in the tooth row And a second engaging portion which engages with the undercut portion inclined toward the side. (FIG.【課題】クラウンブリッジやインプラントのように残存歯や歯槽骨の切削を伴わず、しかも、部分床義歯のように義歯床を用いることなく装着することができて、取り外しも可能な部分義歯を提供する。【解決手段】本発明に係る部分義歯は、人工歯と、人工歯を支持し、開閉可能に構成され、開状態において、歯列を挿入可能に離間するとともに、閉状態において、歯列に内側及び外側から係合する一対の係合部材と、一対の係合部材の閉状態を解除可能に固定するためのロック構造とを備え、一対の係合部材の少なくともいずれか一方の係合部材は、歯列における複数の歯のそれぞれの、歯根に向かうほど広がる方向に傾斜する傾斜部に係合する第一の係合部を備えるとともに、歯列における少なくとも一つの歯の、傾斜部とは反対側に傾斜するアンダーカット部に係合する第二の係合部を備える。【選択図】図2
