Spohr Ana Maria, Sobrinho Lourenço Correr, Consani Simonides, Sinhoreti Mario Alexandre Coelho, Knowles Jonathan C
Department of Dental Materials, Pontificial Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.
Int J Prosthodont. 2003 May-Jun;16(3):277-82.
The aim of this study was to evaluate the effect of different ceramic surface treatments on the tensile bond strength between IPS Empress 2 ceramic framework and Rely X adhesive resin cement, with or without the application of a silane coupling agent.
One hundred twenty disks were made, embedded in resin, and randomly divided into six groups: group 1 = sandblasting (100 microm), no silanation; group 2 = sandblasting (100 microm), silane treatment; group 3 = sandblasting (50 microm), no silanation; group 4 = sandblasting (50 microm), silane treatment; group 5 = hydrofluoric acid etching, no silanation; and group 6 = hydrofluoric acid etching, silane treatment. The disks were bonded into pairs with adhesive resin cement. All samples were stored in distilled water at 37 degrees C for 24 hours and then thermocycled. The samples were submitted to tensile testing.
The use of silane improved the bond strength in relation to the groups in which silane was not applied (P < .05). The most effective surface treatment was etching with 10% hydrofluoric acid, both with (25.6 MPa) and without silane application (16.4 MPa); these values showed a statistically significant difference compared to sandblasting with 50- and 100-microm Al2O3. Sandblasting with 50-microm Al2O3, with (11.8 MPa) and without silane (5.4 MPa), demonstrated significantly higher tensile bond strength than sandblasting with 100-microm Al2O3, with (8.3 MPa) and without silane (3.8 MPa).
Combined application of 10% hydrofluoric acid and silane enhanced the bond strength between the IPS Empress 2 ceramic framework and resin agent.
本研究旨在评估不同陶瓷表面处理对IPS Empress 2陶瓷支架与Rely X粘结树脂水门汀之间拉伸粘结强度的影响，以及是否使用硅烷偶联剂的情况。
制作120个圆盘，嵌入树脂中，并随机分为六组：第1组 = 喷砂（100微米），未进行硅烷化处理；第2组 = 喷砂（100微米），硅烷处理；第3组 = 喷砂（50微米），未进行硅烷化处理；第4组 = 喷砂（50微米），硅烷处理；第5组 = 氢氟酸蚀刻，未进行硅烷化处理；第6组 = 氢氟酸蚀刻，硅烷处理。将圆盘成对用粘结树脂水门汀粘结。所有样品在37℃蒸馏水中储存24小时，然后进行热循环。对样品进行拉伸测试。
与未使用硅烷的组相比，使用硅烷提高了粘结强度（P <.05）。最有效的表面处理是用10%氢氟酸蚀刻，使用硅烷（25.6 MPa）和未使用硅烷（16.4 MPa）；与用50微米和100微米氧化铝喷砂相比，这些值显示出统计学上的显著差异。用50微米氧化铝喷砂，使用硅烷（11.8 MPa）和未使用硅烷（5.4 MPa），其拉伸粘结强度明显高于用100微米氧化铝喷砂，使用硅烷（8.3 MPa）和未使用硅烷（3.8 MPa）。
10%氢氟酸和硅烷的联合应用增强了IPS Empress 2陶瓷支架与树脂粘结剂之间的粘结强度。
