Unal Server Mutluay, Nigiz Remzi, Polat Zelal Seyfioglu, Usumez Aslıhan
Department of Prosthodontics, Faculty of Dentistry, Afyon Kocatepe University.
Dent Mater J. 2015;34(3):351-7. doi: 10.4012/dmj.2014-235. Epub 2015 Apr 23.
There is limited knowledge about the effects of ultrashort pulsed laser on zirconia ceramic surfaces. The aim of this study was to evaluate the effects of ytterbium (Yb)-doped fiber laser and other surface treatment methods -namely, sandblasting with 110 µm aluminum oxide or 30 µm silica-coated alumina on shear bond strength (SBS) of zirconia to tooth surface. A total of 128 zirconium oxide disks were made by using CAD-CAM technology. Disk surfaces were sandblasted with Al2O3 particles or silica-coated alumina or irradiated with Yb-doped fiber based nanosecond pulsed laser at 85W output power at 25 kHz. Disks were luted to dentin using two different resin cement. SBS of each specimen was measured. Results were statistically analyzed using two-way analysis of variance (ANOVA) and Bonferroni and Dunnett tests (p<0.005). Highest bond strength was obtained when zirconia surface was pretreated with Yb-doped fiber-based nanosecond pulsed laser regardless of the resin cement used.
关于超短脉冲激光对氧化锆陶瓷表面的影响，目前所知有限。本研究的目的是评估掺镱（Yb）光纤激光和其他表面处理方法——即使用110 µm氧化铝或30 µm二氧化硅涂层氧化铝进行喷砂处理——对氧化锆与牙齿表面剪切粘结强度（SBS）的影响。总共使用计算机辅助设计与制造（CAD-CAM）技术制作了128个氧化锆盘。盘表面用Al2O3颗粒或二氧化硅涂层氧化铝进行喷砂处理，或用输出功率为85W、频率为25kHz的掺Yb光纤基纳秒脉冲激光照射。使用两种不同的树脂水门汀将盘粘结到牙本质上。测量每个标本的SBS。使用双向方差分析（ANOVA）以及Bonferroni和Dunnett检验对结果进行统计学分析（p<0.005）。无论使用何种树脂水门汀，当氧化锆表面用掺Yb光纤基纳秒脉冲激光预处理时，均可获得最高的粘结强度。
