A fixture (10) to be embedded in a bone (H), comprising: a fixture body (11) through which a central hole (13) penetrates over the entire length thereof; and a cap body (21) which closes an opening on a root end side of the central hole (13). The cap body (21) has a first shaft section (24) to be fitted into the central hole (13). The central hole (13) has a first tapered hole section (14) which decreases in diameter from the root end side toward a top end side, and the cap body (21) has a first tapered shaft section (25) to be fitted into the first tapered hole section (14).
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