The purpose of this study is to provide a cheetah holding device capable of irradiating the oral cavity even when the examiner or the healer does not have a light source and does not intercept light from a dental device or a dental instrument, and various tests and treatments.Solution 1 a cheek clamping device 1 for holding the cheek 101 of the user 100 from the outside and inside thereof, a first retainer 3 disposed on the outer skin 102 of the cheek 101 of the user 100, and an upper portion 103 of the user 100, and a lower jaw tooth column 106, 1 A first retaining body in which the second presser 4 disposed between the 07 and the buccal mucosa 104 and the first and second holders 3 and 4 are connected together and the cheek 101 of the user 100 is held between the rear face 42 of the first retainer 3 and the surface 41 of the second presser 4 3A connecting portion 2 for holding the second holder 4 and an irradiation means 5 for irradiating light into the oral cavity 103 of the user 100 are provided.Diagram【課題】検査者や治療者が光源を持つことなく、また、歯科用装置や歯科用器具で射光が遮られることがなく、種々の検査や治療のときでも口腔内を照射することができる頬挟持具を提供することを目的とする。【解決手段】使用者100の頬101をその外側と内側から挟持する頬挟持具1であって、使用者100の頬101の外表皮102上に配置される第1押え体3と、使用者100の口腔内103で上、下顎歯列106、107と頬粘膜104との間に配置される第2押え体4と、第1押え体3と第2押え体4とを連結するとともに、第1押え体3の裏面42と第2押え体4の表面41とで使用者100の頬101を挟持した状態で第1押え体3と第2押え体4とを保持する連結部2と、使用者100の口腔内103へ光を照射できる照射手段5と、を備える。【選択図】図1