PROBLEM TO BE SOLVED: To easily detect an occlusal force with excellent reliability, and to reduce an adverse effect on a tooth when the occlusal force is strongly bitten to measure the occlusal force. A detection sheet and an occlusal force detection device using the detection sheet are provided. SOLUTION: In an occlusal force detection sheet 12 which is inserted between upper and lower teeth to detect an occlusal force, flexible first electrodes Y and second electrodes X are arranged so as to face each other, and Of the dielectric Y that is elastically deformable in the opposing direction of the electrode Y and the second electrode X of the first electrode Y and the second electrode X. And the occlusal force exerted on the facing portion 42 of the second electrode X in the facing direction is detected based on the change in the capacitance due to the change in the distance between the first electrode Y and the second electrode X. . [Selection diagram] Figure 1【課題】咬合力を簡易に且つ優れた信頼性で検出することができると共に、強く噛んで咬合力を測定する場合に歯への悪影響を低減することも可能となる、新規な構造の咬合力検出シートとそれを用いた咬合力検出装置を提供する。【解決手段】上下の歯の間に差し入れられて咬合力を検出する咬合力検出シート１２において、柔軟な第一の電極Ｙと第二の電極Ｘが互いに対向して配置されて、それら第一の電極Ｙと第二の電極Ｘの対向方向に弾性変形可能とされた誘電体２６がそれら第一の電極Ｙと第二の電極Ｘの対向間に配されており、それら第一の電極Ｙと第二の電極Ｘの対向部分４２に対して対向方向に及ぼされる咬合力が、それら第一の電極Ｙと第二の電極Ｘの距離の変化による静電容量の変化に基づいて検出される。【選択図】図１
