Abstract
For healthy chewing, normal occlusion without local overload is necessary. However, the current occlusal examination depends on techniques, skills, and sense of doctors. Therefore it is an important issue to establish an equipment that can check occlusal condition easily, accurately and objectively. This research aims to realize novel checking system listening to occlusal sound using microphone. In this research, establishment of methodology realizing connection between a device having a microphone and teeth is breakthrough. In order to attach the device on teeth, we have developed a soft suction cup applied negative pressure. We have conducted experiments of detecting occlusal sound using this device in the oral cavity.