PROBLEM TO BE SOLVED BY comprehension of proper suction of scattering matter and improvement of efficiency of work for enlarging visual recognition of a visual object.A dental extracorporeal aspiration hood 3 has a tubular portion 30 having a tubular shape and having a proximal end side X 1 attached thereto and a distal end side X 2 serving as a suction port and a tubular portion 30 having a distal side circumferential edge of the tubular portion 30 And a transparent partial tube wall portion 31 extending further to the distal end side X 2 than the portion 30 a. The partial tube wall portion 31 is provided with a lens portion 5 that enlarges a visual object when viewing the outer peripheral side Y 1 to the inner peripheral side Y 2.BACKGROUND OF THE INVENTION【課題】飛散物の適切な吸引と、視認対象の拡大視認するための作業の効率化と、を両立する。【解決手段】歯科用口腔外吸引フード3は、筒状をなし、基端側X1が取り付けられ、先端側X2が吸引口となる筒状部30と、筒状部30の先端側周縁の一部30aよりもさらに先端側X2へ延びる透明な部分筒壁部31と、を有する。部分筒壁部31には、外周側Y1から内周側Y2を見た際に視認対象を拡大するレンズ部5が設けられている。【選択図】図1
