Cortical bone response toward nanosecond-pulsed laser-treated zirconia implant surfaces
Cortical bone response toward nanosecond-pulsed laser-treated zirconia implant surfaces
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DOI：
10.4012/dmj.2018-153
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发表时间：
2019-06-01
影响因子：
2.5
通讯作者：
Hayakawa, Tohru
中科院分区：
文献类型：
--
作者：
Hirota, Masatsugu;Harai, Tomohiro;Hayakawa, Tohru
用纳秒脉冲Nd：YAG激光辐照两种部分稳定的氧化锆，即氧化钇稳定的四氧化锆多晶（Y-TZP）和含氧化铝纳米复合材料的氧化铈稳定的四氧化锆多晶（Ce-TZP），在其表面制备出宽30 μ m、深30 μ m的凹凸规则结构。在Ce-TZP的情况下，激光照射后表面变为黑色。EDX测量显示，与Y-TZP相比，Ce-TZP上减少了更多的氧原子。将激光照射的氧化锆种植体植入大鼠股骨骨缺损处，持续4周。作为对照，使用大网格喷砂和酸蚀刻（blastedHF）植入物。激光治疗的Y-TZP提供了更大程度的骨-种植体接触比比blastedHF治疗的Y-TZP（p
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 mu m width and 30 mu m 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