Occlusal Paper-Based Flexible Pressure Sensor for in Situ Measuring Oral Occlusal Force

A pressure sensor based on occlusal paper is proposed for the first time to measure occlusal force at the given position in real time. A light-weight bacterial cellulose MXene (MX-BC) composite aerogel as piezoresistive sensing layer was prepared by liquid nitrogen assisted unidirectional freezing technology. The flexible pressure sensor was connected with the wireless test system based on Bluetooth module. The position and range of occlusion by coloring the occlusal paper acted on the teeth was observed, and the occlusal force at the corresponding location can be recorded through the fabricated pressure sensor. Meanwhile, and the waveform through the APP was displayed on the mobile equipment in real time.