TY - JOUR
T1 - Cortical bone response toward nanosecond-pulsed laser-treated zirconia implant surfaces
AU - Hirota, Masatsugu
AU - Harai, Tomohiro
AU - Ishibashi, Shinji
AU - Mizutani, Masayoshi
AU - Hayakawa, Tohru
N1 - Funding Information:
This work was supported by Grants-in-Aid for Young Scientists (B) (15K20492, 17K17225) and for Scientific Research (C) (17K06074) from the Japan Society for the Promotion of Science, and a Grant-in-Aid from the Society for Tsurumi University School of Dental Medicine (29001). The authors are grateful to R. Yagi and Y. Iinuma for their help with animal experiments.
Publisher Copyright:
© 2019, Japanese Society for Dental Materials and Devices. All rights reserved.
PY - 2019
Y1 - 2019
N2 - 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.
AB - 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.
KW - Bone-to-implant contact
KW - Nanosecond-pulsed laser
KW - Osseointegration
KW - Osteoblast
KW - Zirconia implant
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U2 - 10.4012/dmj.2018-153
DO - 10.4012/dmj.2018-153
M3 - Article
C2 - 30918234
AN - SCOPUS:85067086850
SN - 0287-4547
VL - 38
SP - 444
EP - 451
JO - Dental Materials Journal
JF - Dental Materials Journal
IS - 3
M1 - JST.JSTAGE/dmj/2018-153
ER -