The effect of nonthermal argon plasma surface treatment on the fracture resistance of monolithic zirconia restorations containing tetragonal and cubic grains

• Published in: Journal of Oral Science Vol. 64; no. 2; pp. 124 - 128
• Main Authors: Bozogullari, Hatice Nalan, Yucel, Hande Citir, Ustun, Ozlem, Akan, Tamer, Ozer, Fusun
• Format: Journal Article
• Language: English
• Published: Japan Nihon University School of Dentistry 2022
• Subjects: air abrasion; Air Abrasion, Dental; Argon; Ceramics - chemistry; cubic zirconia; Dental Stress Analysis; Materials Testing; monolithic zirconia; nonthermal argon plasma; Plasma Gases - therapeutic use; Resin Cements - chemistry; Surface Properties; tetragonal zirconia; Zirconium - chemistry; air abrasion; monolithic zirconia; cubic zirconia; tetragonal zirconia; nonthermal argon plasma
• ISSN: 1343-4934; 1880-4926
• DOI: 10.2334/josnusd.21-0446

Purpose: The aim of this study was to investigate the effect of nonthermal argon plasma (NP) surface treatment on the fracture resistance of monolithic zirconia restorations with different microstructures.Methods: Twenty restorations were prepared from each of two tetragonal and two cubic zirconia materials (80 restorations in total). The restorations were then divided into two subgroups (n = 10) for each material according to the surface treatment applied: air abrasion or NP. The surface topography of the treated groups was examined using a scanning electron microscope. All restorations were fixed to metal dies with resin cement, subjected to thermal cycling, and then underwent fracture resistance testing with a universal testing device. Two-way ANOVA and Bonferroni tests were used for statistical analysis of the data (α = 0.05).Results: The type of surface treatment and the type of zirconia material were shown to significantly affect the fracture resistance of the restorations. The air-abraded groups showed significantly higher fracture resistance (N) than the NP groups (P < 0.001).Conclusion: The results of this study suggest that air abrasion surface treatment has a more favorable effect on the fracture resistance of tetragonal and cubic zirconia restorations than NP surface treatment.