Kirmali Omer, Akin Hakan, Kapdan Alper
Department of Prosthodontics, Faculty of Dentistry, Akdeniz University , Antalya , Turkey.
Acta Odontol Scand. 2014 Aug;72(6):432-9. doi: 10.3109/00016357.2013.853320. Epub 2013 Nov 21.
This study aimed to investigate the effects of different mechanical surface treatments of pre-sintered zirconium oxide (ZrO2) in an attempt to improve its bonding potential.
One hundred and twenty IPS e-max ZirCAD (Ivoclar Vivadent) pre-sintered zirconia blocks (7 mm diameter, 3 mm height) received six different surface treatments (n = 20): Group C was untreated (control); Group E was Er:YAG laser irradiated; Group N was Nd:YAG laser irradiated; Group SB was sandblasted, Group SN was sandblasted and Nd:YAG laser irradiated; and Group SE was sandblasted and Er:YAG laser irradiated. After the surface treatments, the average surface roughness (Ra, µm) of each specimen was determined with a profilometer, then all the specimens were sintered. The surface roughness values were analysed through one-way ANOVA and Tukey's test. Changes in the morphological characteristics of ZrO2 were examined through scanning electron microscopy (SEM).
Sintered sandblasted, Er:YAG laser treatment, sandblasted + Er:YAG laser and sandblasted + Nd:YAG laser irradiation resulted in a rougher surface than the other treatments.
Nd:YAG laser irradiation alone was not effective in altering the zirconia surface morphology.
本研究旨在探究预烧结氧化锆（ZrO₂）不同机械表面处理的效果，以提高其结合潜力。
120个IPS e-max ZirCAD（义获嘉伟瓦登特公司）预烧结氧化锆块（直径7毫米，高3毫米）接受了六种不同的表面处理（n = 20）：C组未处理（对照）；E组接受铒钇铝石榴石（Er:YAG）激光照射；N组接受钕钇铝石榴石（Nd:YAG）激光照射；SB组进行喷砂处理；SN组进行喷砂处理并接受Nd:YAG激光照射；SE组进行喷砂处理并接受Er:YAG激光照射。表面处理后，用轮廓仪测定每个试样的平均表面粗糙度（Ra，微米），然后对所有试样进行烧结。通过单因素方差分析和Tukey检验分析表面粗糙度值。通过扫描电子显微镜（SEM）检查ZrO₂形态特征的变化。
烧结后的喷砂处理、Er:YAG激光处理、喷砂 + Er:YAG激光处理和喷砂 + Nd:YAG激光照射处理后的表面比其他处理更粗糙。
单独的Nd:YAG激光照射对改变氧化锆表面形态无效。
