and occlusal sound detecting section for detecting a bite sound generated during occlusal tooth, dental diagnosis device having an analysis unit for analyzing the occlusal tooth based on the detected occlusion sounds by occlusal sound detector a at the occlusal sound detection unit includes a sucker-like suction portion adsorbed on the tooth, is connected to the through holes provided in the suction unit, a hollow shape which is controlled to a negative pressure to the extent that the suction unit can be adsorbed on the tooth and a passage portion is connected to the suction unit, and a detection unit for detecting a bite sound through the adsorption unit.歯の咬み合わせ時に発生する咬合音を検出する咬合音検出部と、咬合音検出部によって検出された咬合音に基づいて歯の咬み合わせを解析する解析部とを備えた歯科診断装置であって、咬合音検出部は、歯に吸着する吸盤状の吸着部と、吸着部に設けられた貫通孔に接続され、吸着部が歯に吸着できる程度の負圧に制御される中空状の通路部と、吸着部に接続され、吸着部を介して咬合音を検出する検出部とを有する。
