Department of Comprehensive Care, Case Western Reserve University, School of Dental Medicine, Cleveland, OH 10900, USA.
Acta Odontol Scand. 2009;67(6):346-54. doi: 10.1080/00016350903074525.
The purpose of this study was to evaluate the shear bond strength (SBS) of two dual-curing resin cements to two high-strength ceramics with different surface texture.
Composite cylinders were bonded to aluminum oxide (A) and zirconium oxide (Z) ceramic disks with six different surfaces. Investigated surfaces were for both ceramics: dry-pressed Procera Crown (A1, Z1), machined Procera Bridge (A2, Z2), airborne particle abraded Procera bridge (A3, Z3). Additional surfaces were, for alumina, dry-pressed Procera Laminate (A4) and, for zirconia, two modified surfaces (Z4, Z5). Two adhesive resin cements were used (Clearfil Esthetic and RelyX ARC). SBS was tested in a universal testing machine before and after artificial aging by thermal cycling.
Mean SBS ranged from 6.1 to 38.4 MPa before and from 0.0 to 41.4 MPa after aging. Clearfil Esthetic in A3, A4, and Z3 performed better than RelyX ARC. Aging decreased SBS, except for Z1, Z4, and Z5. For alumina, A4 was higher in SBS than A2, but similar to A1 and A3. For zirconia, Z5 showed the highest SBS. Z4 was higher than Z2 and Z3, but similar to Z1.
Shear bond strength to alumina and zirconia increases with surface roughness. The modified zirconia surface Z5 provides stable long-term shear bond strength and can be bonded to either of the two used cements.
本研究旨在评估两种双固化树脂水门汀与两种不同表面纹理的高强陶瓷的剪切粘结强度（SBS）。
用 6 种不同表面的复合圆柱体将氧化铝（A）和氧化锆（Z）陶瓷圆盘粘结在一起。研究了两种陶瓷的以下表面：干压 Procera Crown（A1、Z1）、机加工 Procera Bridge（A2、Z2）、气流传感粒子喷砂处理的 Procera Bridge（A3、Z3）。另外的表面为氧化铝的干压 Procera Laminate（A4）和氧化锆的两个改良表面（Z4、Z5）。使用了两种粘结树脂水门汀（Clearfil Esthetic 和 RelyX ARC）。在热循环人工老化前后，在万能试验机上测试 SBS。
老化前的平均 SBS 范围为 6.1 至 38.4 MPa，老化后的 SBS 范围为 0.0 至 41.4 MPa。Clearfil Esthetic 在 A3、A4 和 Z3 的表现优于 RelyX ARC。除了 Z1、Z4 和 Z5 之外，老化降低了 SBS。对于氧化铝，A4 的 SBS 高于 A2，但与 A1 和 A3 相似。对于氧化锆，Z5 表现出最高的 SBS。Z4 的 SBS 高于 Z2 和 Z3，但与 Z1 相似。
氧化铝和氧化锆的剪切粘结强度随表面粗糙度的增加而增加。改良氧化锆表面 Z5 提供稳定的长期剪切粘结强度，可与两种使用的水门汀粘结。
