著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) TORSTENSON B.,Contraction gap under composite resin restorations : Effect of hygroscopic expansion and thermal stress,Oper Dent,,,1988,13,,24-31,https://cir.nii.ac.jp/crid/1572261549150872960,