Disclosed is a sense of wearing can provide good to the user is difficult to feel uncomfortable , prolonged TCH prevention member hardly giving pain to the user in wearing . A TCH prevention device 1 and the plate portion 2 , and consists of protruding portion 3 which protrudes at the center of the plate portion 2 , and can contact to fit the plate-like portion 2 on the front surface shape of the upper jaw model and is is , the outer periphery of the plate portion 2 is brought into contact with the inner periphery of the entire dentition of the upper jaw model in a close contact state . If the protrusion 3 is mounted in the mouth maxillary protrusion 3 and a lower position of the incisive papilla , are provided so as to protrude to be inclined slightly backwards . The tip of the protrusion 3 is a smooth curved surface . [ Selection Figure ] Figure 2【課題】装着感が良好で使用者に違和感を与え難く、長時間の装着でも使用者に苦痛を与え難いTCH防止具を提供する。【解決手段】TCH防止具1は板状部2と、板状部2の中央で突出する突出部3とからなり、板状部2を上顎模型の前部の表面形状に合わせて密着可能とされており、密着した状態において板状部2の外側周縁が上顎模型の歯列全体の内側の周縁に接触するようになっている。突出部3を口内上顎に装着した場合、突出部3は切歯乳頭の位置から下方であって、やや後方に傾斜するように突出して設けられている。突出部3の先端は滑らかな曲面形状とされている。【選択図】図2
