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Effect of Acid Mixtures on Surface Properties and Biaxial Flexural Strength of As-Sintered and Air-Abraded Zirconia

 Jong-Eun Kim  ;  Yong-Chan Kwon  ;  Sunjai Kim  ;  Young-Bum Park  ;  June-Sung Shim  ;  Hong-Seok Moon 
 MATERIALS, Vol.14(9) : 2359, 2021-05 
Journal Title
Issue Date
3Y-TZP ; acid mixture ; air abrasion ; as-sintered ; biaxial flexural strength ; sulfuric acid ; zirconia
The aim of this work was to evaluate the effects of application time of an acid mixture solution on the surface roughness, phase transformation, and biaxial flexural strength of 3Y-TZP after sintering or air abrasion. For the biaxial flexural strength measurement, 220 3Y-TZP disk-shaped specimens were prepared after as-sintering or air abrasion. The etching solution comprised a mixture of hydrofluoric acid, sulfuric acid, hydrogen peroxide, methyl alcohol, and purified water. The samples were divided into 11 subgroups according to the etching times (Control, 1, 2, 3, 5, 8, 10, 12, 15, 20, and 30 min). The results showed that acid treatment on both as-sintered and air-abraded 3Y-TZP surfaces increased the surface roughness. However, it had no significant effects on the monoclinic phase or flexural strength of as-sintered zirconia. The monoclinic phase and flexural strength of air-abraded zirconia increased sharply after air abrasion; however, they gradually decreased after acid treatment, to a similar level to the case of the untreated surface. Surface treatment with acid mixture increased the roughness, but the lack of increase of monoclinic phase is thought to be because the loose monoclinic particles remaining on the surface were removed through the etching process.
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2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Sun Jai(김선재) ORCID logo https://orcid.org/0000-0002-0828-8008
Kim, Jong Eun(김종은) ORCID logo https://orcid.org/0000-0002-7834-2524
Moon, Hong Seok(문홍석) ORCID logo https://orcid.org/0000-0001-8118-8145
Park, Young Bum(박영범)
Shim, June Sung(심준성) ORCID logo https://orcid.org/0000-0003-1428-0122
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