Effect of different duration of nonthermal plasma treatments on bonding durability of zirconia ceramics

doi:10.19439/j.sjos.2025.05.005

Abstract

Abstract: PURPOSE: To investigate the effect of different low temperature plasma treatment time on bonding durability of zirconia. METHODS: Twenty-four pieces of Class Ⅰ(10 mm×10 mm×2 mm) and 80 pieces of Class Ⅱ (3 mm×3 mm×2 mm) zirconia ceramic blocks were produced. The samples were divided into 4 groups, and dealt with separately according to the following groups: blank control group (group A), sandblasting group (group B), plasma treatment group 60 s (group C) and plasma treatment group 120 s (group D). The finished Class Ⅱ zirconia samples were further divided into thermocycling group and non-thermocycling group. Scanning electron microscope (scanning electron microscope, SEM), X-ray photoelectron spectrometer (X-ray photoelectron spectroscopy, XPS), atomic force microscopy (atomic force microscope, AFM) and water contact angle tester were used to detect zirconia surface and calculate shear bond strength. RESULTS: The surface morphology of group C and D had no significant change, the roughness was not significantly different from that of group A (P>0.05), and the surface hydrophilicity was significantly increased compared with group A (P<0.05). The surface roughness of group B was significantly increased compared with group A (P<0.05), and the hydrophilicity was significantly increased compared with group A (P<0.05). For the non-thermocycling group, the shear bond strength of group B, C and D was significantly higher than that of group A (P<0.05). For the thermocycling group, the shear bond strength of group B was the highest, followed by group D, and then group C, and group A was the lowest (P<0.05). CONCLUSIONS: Increasing the duration of nonthermal plasma treatment can improve the bond strength of zirconia.

Key words: Zirconia ceramic, Plasma, Shear bonding strength, Restoration material

CLC Number:

R783.2

Meng Fanhao, Wen Yuzhen, Sun Yuhuan, Liu Min, Gao Rui, Wang Cong, Bao Junhan, Chen Jianfeng. Effect of different duration of nonthermal plasma treatments on bonding durability of zirconia ceramics[J]. Shanghai Journal of Stomatology, 2025, 34(5): 477-482.

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