Effects of glass-ceramic spray deposition manipulation on the surface characteristics of zirconia dental restorations. Issue 20 (15th October 2022)

• Record Type: Journal Article
• Authors: Peng, Tzu-Yu; Kang, Chien-Ming; Feng, Sheng-Wei; Hung, Cheng-Yuan; Iwaguro, Shogo; Lin, Dan-Jae
• Is Part Of: Ceramics international. Volume 48:Issue 20(2022)
• Page Start: 29873
• Page End: 29881
• Publication Date: 2022-10-15
• Subjects: Spray deposition -- Zirconia -- Glass-ceramic -- Interface debonding -- Dental prosthesis; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.06.252
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: A novel glass-ceramic spray deposition (GCSD) method was developed to modify the yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) surface and to enhance the bond strength between Y-TZP and resin cement. Five different experimental groups were characterized, non-treatment (NT), airborne particle abrasion (AB), GCSD without etching (GS), GCSD with 5% HF etching (GSE5), and GCSD with 9.5% HF etching (GSE9), to determine the optimal method for improving the bond strength. Scanning electron microscopy and an argon ion milling system were used to investigate the surface and cross-sectional microstructures. The changes in the surface characteristics of Y-TZP were analyzed via contact angle analysis, atomic force microscopy, X-ray diffraction, and energy-dispersive X-ray spectrometry. The bond strengths were determined using shear bond strength test. The results revealed that GCSD could produce a dense and uniform lithium disilicate glass-ceramic coating layer and infiltrate the Y-TZP surface. This coating resulted in superior micromechanical interlocking and increased hydrophilicity, thereby enhancing the bond strength between Y-TZP and resin cement ( P < 0.05). The study findings indicated that GCSD accompanied by 5% HF etching for 100 s is optimal for strengthening the Y-TZP/resin cement bond, thereby providing a novel solution for dental bonding systems. Graphical abstract: Image 1