カサイ　タダカツ   KASAI TADAKATSU   笠井　唯克    所属   朝日大学  歯学部 口腔病態医療学講座 口腔外科学    朝日大学  大学院 歯学研究科    職種   准教授
言語種別	英語
発行・発表の年月	2022/02
形態種別	研究論文
査読	査読あり
標題	Changes in Hardness of Mouthguard Materials After Heating and Pressure Molding
執筆形態	共著
掲載誌名	岐阜歯科学会雑誌
掲載区分	国内
出版社・発行元	岐阜歯科学会
巻・号・頁	48(3),pp.137-141
総ページ数	5
著者・共著者	WATANABE KAZUHIRO, YAMAUCHI MUTSUO, MIYAO MOTONOBU, WATANABE RYO, KASAI TADAKATSU, EHARA YUICHI, NAGANAWA KOSUKE, UKAI AKIRA, TAKAHASHI MOE, MATSUSITA TAKAHIRO, YASUMURA SHINICHI, SUMITOMO SHINICHIRO, MURAMATSU YASUNORI
概要	Purpose: Mouthguards (MGS) are generally fabricated by heating and molding ethylene-vinyl acetate (EVA) sheets. In this study, we investigated the change in hardness of EVA material by heat-molding MGS. Methods: Five different EVA sheets were heat-molded on the model to produce MGS. The anterior and molar regions of MGs were cut out for sampling materials. A micro durometer (MD-1, Kobunshi Keiki Co Ltd, Kyoto, Japan) was used to measure the material hardness. Results: In most samples, their hardness rose after heat-molding, and the hardness level was higher in anterior regions than in molar regions. Conclusion: The hardness of EVA used in MG materials tended to increase after heat-molding.