ハヤカワ トオル   Hayakawa Toru
  早川 徹
   所属   鶴見大学・鶴見大学短期大学部 学長・副学長  学長・副学長 副学長
   職種   副学長
論文種別 【査読あり】 研究論文(学術雑誌)
言語種別 英語
査読の有無 査読あり
表題 Cortical bone response toward nanosecond-pulsed laser-treated zirconia implant surfaces.
掲載誌名 正式名:Dental materials journal
略  称:Dent Mater J
ISSNコード:18811361/02874547
掲載区分国内
巻・号・頁 38(3),pp.444-451
著者・共著者 Hirota Masatsugu, Harai Tomohiro, Ishibashi Shinji, Mizutani Masayoshi, Hayakawa Tohru
発行年月 2019/06
概要 Two type of partially stabilized zirconia, namely yttria-stabilized tetragonal zirconia polycrystals (Y-TZP) and ceria-stabilized tetragonal zirconia polycrystals including aluminum oxide nanocomposite (Ce-TZP), were irradiated by nanosecond-pulsed Nd:YAG laser and the regular structure with concave and convex of each 30 μm width and 30 μm depth were prepared on both surfaces. In the case of Ce-TZP, the surface was changed to be black after laser irradiation. EDX measurement revealed the reduction of more amounts of oxygen atoms on Ce-TZP compared to Y-TZP. Laser irradiated zirconia implants were inserted into the bone defects of rat femur during 4 weeks. As a control, large grid sandblasted and acid etching (blastedHF) implant was used. Laser treatment for Y-TZP provided greater degree of bone-implant contact ratio than blastedHF treated Y-TZP (p<0.05). In the case of Ce-TZP, however, laser treatment showed no clear effect on bone response.
DOI 10.4012/dmj.2018-153
PMID 30918234