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) YOKOYAMA K.,Fracture mechanisms of retrieved titanium screw thread in dental implant,Biomater.,,,2002,23,,2456-2465,https://cir.nii.ac.jp/crid/1571417126701142016,