Effect of different surface treatments on surface roughness, phase transformation, and biaxial flexural strength of dental zirconia

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Yahyazadehfar Niknaz; Azimi Zavaree Maryam; SHAYEGH SAYED SHOJAEDIN; Yahyazadehfar Mobin; HOOSHMAND TABASSOM; Hakimaneh Seyed Mohammad Reza

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Journal: JOURNAL OF DENTAL RESEARCH, DENTAL CLINICS, DENTAL PROSPECTS Year:2021 | Volume:15 | Issue:3 Page(s): 210-218

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Title

Effect of different surface treatments on surface roughness, phase transformation, and biaxial flexural strength of dental zirconia

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Keywords

Flexural strength

Surface properties

Y-TZP ceramic

YSGG laser

Abstract

Background. Interfacial failures at the cement‒ restoration interface highlights the importance of effective surface treatment with no adverse effect on the zirconia’ s mechanical properties. This study aimed to determine the effect of different surface treatments on dental graded zirconia’ s surface roughness and certain mechanical properties. Methods. Forty sintered zirconia specimens were randomly divided into four groups (n = 10): control (no surface treatment), sandblasting (SA), grinding with diamond bur (GB), and Er, Cr: YSGG laser (LS). Following surface treatment, the surface roughness and surface topography of the specimens were examined. X-ray diffraction (XRD) was conducted. In addition, the biaxial Flexural strengths of specimens were evaluated. The data were analyzed using one-way analysis of variance (ANOVA) and post hoc Tukey tests; the Pearson correlation coefficient was calculated between either volumetric percentage of monoclinic phase or roughness and Flexural strength of specimens (α = 0. 05). Results. The GB group exhibited significantly greater surface roughness compared to the other groups (P < 0. 005). The LS and control groups exhibited a significantly lower volumetric percentage of the monoclinic phase (P < 0. 001) than the GB and SA treatments. The SA group exhibited significantly higher Flexural strength than the control (P = 0. 02) and GB groups (P < 0. 01). Furthermore, the Weibull analysis for the LS showed higher reliability for the Flexural strength than other treatments. Conclusion. Er, Cr: YSGG laser treatment, with the lowest extent of phase transformation and reliable Flexural strength, can be a promising choice for surface treatment of zirconia.

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APA: Copy

Yahyazadehfar, Niknaz, Azimi Zavaree, Maryam, SHAYEGH, SAYED SHOJAEDIN, Yahyazadehfar, Mobin, HOOSHMAND, TABASSOM, & Hakimaneh, Seyed Mohammad Reza. (2021). Effect of different surface treatments on surface roughness, phase transformation, and biaxial flexural strength of dental zirconia. JOURNAL OF DENTAL RESEARCH, DENTAL CLINICS, DENTAL PROSPECTS, 15(3), 210-218. SID. https://sid.ir/paper/689126/en

Vancouver: Copy

Yahyazadehfar Niknaz, Azimi Zavaree Maryam, SHAYEGH SAYED SHOJAEDIN, Yahyazadehfar Mobin, HOOSHMAND TABASSOM, Hakimaneh Seyed Mohammad Reza. Effect of different surface treatments on surface roughness, phase transformation, and biaxial flexural strength of dental zirconia. JOURNAL OF DENTAL RESEARCH, DENTAL CLINICS, DENTAL PROSPECTS[Internet]. 2021;15(3):210-218. Available from: https://sid.ir/paper/689126/en

IEEE: Copy

Niknaz Yahyazadehfar, Maryam Azimi Zavaree, SAYED SHOJAEDIN SHAYEGH, Mobin Yahyazadehfar, TABASSOM HOOSHMAND, and Seyed Mohammad Reza Hakimaneh, “Effect of different surface treatments on surface roughness, phase transformation, and biaxial flexural strength of dental zirconia,” JOURNAL OF DENTAL RESEARCH, DENTAL CLINICS, DENTAL PROSPECTS, vol. 15, no. 3, pp. 210–218, 2021, [Online]. Available: https://sid.ir/paper/689126/en

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