Jiangsu Key Laboratory of Oral Diseases, Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China.
Jiangsu Key Laboratory of Oral Diseases, Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China.
J Prosthodont Res. 2020 Apr;64(2):193-201. doi: 10.1016/j.jpor.2019.06.008. Epub 2019 Nov 2.
This study aimed to evaluate bond durability when applying 2 phosphate ester monomer-containing self-adhesive resin cements alone, versus a combination of phosphate ester monomer-containing primer conditioning plus 2 conventional resin cements requiring primers, to zirconia after different artificial aging methods.
We cemented air-abraded zirconia plates to composite resin cylinders with self-adhesive resin cements (MS; RU) alone or cemented them with traditional resin cements (ZRV; ZVN) after pre-conditioning with a zirconia primer. A shear bond strength (SBS) test were performed after subjecting them to 19 different aging conditions (n = 15) comprising 30,000× thermocycles, air storage at room temperature (RT), water storage at RT, or at 37 °C for 24 h, 1 week, 1, 3, 6, and 12 months. Zirconia powders mixed with zirconia primer or 2 self-adhesive resin cements were characterized by X-ray photoelectron spectroscopy.
Groups MS and ZVN obtained the highest SBS after all of aging methods. SBS after 6 months of storage was similar to SBS after 24 h of storage, while both were higher than SBS after 1 year of storage. Water storage at 37 °C provided higher SBS than RT water storage did. We detected a Zr-O-P bond in both self-adhesive resin cement/zirconia powder mixtures.
Application of self-adhesive resin cements alone could be an alternative to pre-conditioning with a zirconia primer followed by the application of conventional resin cements. Formation of Zr-O-P bonds contributed to the bonding improvement of self-adhesive resin cements. Different aging conditions affected SBS values.
本研究旨在评估单独应用两种含磷酸酯单体自粘接树脂水门汀和磷酸酯单体预处理加两种需要预处理剂的传统树脂水门汀粘接氧化锆后的粘结耐久性，以及在不同人工老化方法下的情况。
我们使用自粘接树脂水门汀（MS；RU）单独粘接喷砂氧化锆板和复合树脂圆柱体，或者在使用氧化锆预处理剂预处理后使用传统树脂水门汀（ZRV；ZVN）粘接。将它们经受 19 种不同老化条件（n = 15）后进行剪切粘结强度（SBS）测试，这些老化条件包括 30,000×热循环、室温空气储存（RT）、室温水储存或 37°C 储存 24 h、1 周、1、3、6 和 12 个月。将氧化锆粉末与氧化锆底漆或两种自粘接树脂水门汀混合，并用 X 射线光电子能谱进行表征。
在所有老化方法后，MS 组和 ZVN 组获得了最高的 SBS。6 个月储存后的 SBS 与 24 h 储存后的 SBS 相似，均高于 1 年储存后的 SBS。37°C 水储存提供的 SBS 高于 RT 水储存。我们在两种自粘接树脂水门汀/氧化锆粉末混合物中均检测到 Zr-O-P 键。
单独应用自粘接树脂水门汀可以替代氧化锆底漆预处理，然后应用传统树脂水门汀。Zr-O-P 键的形成有助于提高自粘接树脂水门汀的粘结性能。不同的老化条件会影响 SBS 值。
