부산대학교 도서관

We propose an implanted hearing aid that is worn in the crown of a dental implant and operates in accordance with the bone conduction mechanism. We measured the thresholds of bone conduction hearing (via the teeth) with the use of a bone conductive actuator. Subjective evaluations were performed based on the subject’s hearing thresholds as a method of measurement of the bone conduction sound hearing level during tooth excitation. However, in this approach, the subject may experience pain owing to the need to maintain a pressing force on the tooth for a certain period of time. This work demonstrates that there is a correlation between the thresholds of hearing at the time of tooth excitation and the measured results of the inear air conduction sound with an in-ear probe microphone. The air conduction sound was generated within the ear by changing the tooth excitation position and was measured with an in-ear probe microphone.