Dayama Nikhil Vitthal, Ali Mariyam, Gaur Abhishek, Pandey Kaushik Kumar, Alqahtani Nasser M, Alfarsi Mohammed A, Zarbah Mohammad A, Chaturvedi Saurabh, Minervini Giuseppe
Department of Prosthodontics and Crown & Bridge, Career Postgraduate Institute of Dental Science and Hospital, Lucknow, India.
Department of Prosthodontics and Crown & Bridge, Saraswati Dental College and Hospital, Lucknow, India.
Technol Health Care. 2024;32(5):2911-2923. doi: 10.3233/THC-231003.
Bonding between metal and ceramic is one of the most important aspects of a successful prosthesis. Various methods have been recommended for preparing the metal surface to enhance the bond between metal and ceramic including the use of a metal bonding agent.
This study aims to evaluate and compare the shear bond strength of the metal-ceramic (M-C) interface after combinations of various surface treatments including the application of a metal bonding agent.
40 Ni-Cr alloy specimens were made and divided into 4 groups of 10 each based on the combination of surface treatments. Sandblasting, surface grinding, and Oxidation heat treatment (OHT) were performed on specimens from Group 1 (Control). In addition, Group 2 specimens received ultrasonic cleaning, Group 3 steam cleaning, and Group 4 metal bonding agent application. Following surface treatments on all specimens, porcelain build-up was performed, and shear bond strength was tested in a Digital Universal testing machine. The statistical tests used were independent t-test and ANOVA.
Results revealed that Group 4 specimens had the highest mean value of shear bond strength of 39.087 MPa while Group 3 specimens showed the least mean shear bond strength of 18.154 MPa with highly statistically significant results (p< 0.001).
The surface treatments and application of bonding agent to metal prior to porcelain application resulted in increased shear bond strength of the metal-ceramic interface.
金属与陶瓷之间的结合是成功制作假体的最重要方面之一。已经推荐了各种方法来处理金属表面，以增强金属与陶瓷之间的结合，包括使用金属粘结剂。
本研究旨在评估和比较在包括应用金属粘结剂在内的各种表面处理组合后，金属 - 陶瓷（M - C）界面的剪切粘结强度。
制作40个镍铬合金试件，并根据表面处理组合将其分为4组，每组10个。对第1组（对照组）的试件进行喷砂、表面研磨和氧化热处理（OHT）。此外，第2组试件接受超声清洗，第3组接受蒸汽清洗，第4组应用金属粘结剂。对所有试件进行表面处理后，进行烤瓷堆塑，并在数字万能试验机上测试剪切粘结强度。使用的统计检验为独立t检验和方差分析。
结果显示，第4组试件的剪切粘结强度平均值最高，为39.087MPa，而第3组试件的平均剪切粘结强度最低，为18.154MPa，结果具有高度统计学意义（p < 0.001）。
在烤瓷之前对金属进行表面处理和应用粘结剂可提高金属 - 陶瓷界面的剪切粘结强度。
