J Adv Prosthodont.  2018 Aug;10(4):259-264. 10.4047/jap.2018.10.4.259.

The effect of zirconia surface architecturing technique on the zirconia/veneer interfacial bond strength

Affiliations
  • 1Seoul Meerae Dental Clinic, Seoul, Republic of Korea.
  • 2Korea Institute of Ceramic Engineering and Technology, Jinju, Republic of Korea.
  • 3Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, MA, USA.
  • 4Department of Dentistry, School of Medicine, Ewha Womans University, Seoul, Republic of Korea. prosth@ewha.ac.kr

Abstract

PURPOSE
The purpose of this study was to evaluate the effect of the zirconia surface architecturing technique (ZSAT) on the bond strength between veneering porcelain and zirconia ceramic.
MATERIALS AND METHODS
20 sintered zirconia ceramic specimens were used to determine the optimal surface treatment time, and were randomly divided into 4 groups based on treatment times of 0, 1, 2, and 3 hours. After etching with a special solution, the surface was observed under scanning electron microscope, and then the porcelain was veneered for scratch testing. Sixty 3 mol% yttria-stabilized tetragonal zirconia polycrystal ceramic blocks were used for tensile strength testing; 30 of these blocks were surface treated and the rest were not. Statistical analysis was performed using ANOVA, the Tukey post-hoc test, and independent t-test, and the level of significance was set at α=.05.
RESULTS
The surface treatment of the zirconia using ZSAT increased the surface roughness, and tensile strength test results showed that the ZSAT group significantly increased the bond strength between zirconia and veneering porcelain compared to the untreated group (36 MPa vs. 30 MPa). Optimal etching time was determined to be 2 hours based on the scratch test results.
CONCLUSION
ZSAT increases the surface roughness of zirconia, and this might contribute to the increased interfacial bond strength between zirconia and veneering porcelain.

Keyword

Zirconia; Zirconia surface architecturing technique (ZSAT); Scratch test; Tensile strength test

MeSH Terms

Ceramics
Dental Porcelain
Tensile Strength
Dental Porcelain

Figure

  • Fig. 1 (A) Push-pull tension gauge 5005, (B) Specimen loaded for tensile strength test (See the line of bonded interface between two zirconia blocks).

  • Fig. 2 (A) Zirconia surface before surface treatment, (B) Zirconia surface after surface treatment for 1 hour, (C) Zirconia surface after surface treatment for 2 hours, (D) Zirconia surface after surface treatment for 3 hours.


Cited by  1 articles

Effects of different surface treatments on the shear bond strength of veneering ceramic materials to zirconia
Adil Othman Abdullah, Yu Hui, Xudong Sun, Sarah Pollington, Fenik Kaml Muhammed, Yi Liu
J Adv Prosthodont. 2019;11(1):65-74.    doi: 10.4047/jap.2019.11.1.65.


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