2022
DOI: 10.3390/medicina58101469
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Effect of 9% Hydrofluoric Acid Gel Hot-Etching Surface Treatment on Shear Bond Strength of Resin Cements to Zirconia Ceramics

Abstract: Background and Objectives: There is no consensus regarding the surface treatment method for achieving optimal bonding strength between zirconia and resin cements. We evaluated the effect of hot-etching with 9% hydrofluoric acid (HF) gel using the Zirconia Etchant Cloud System on zirconia surfaces and the consequent shear bond strength (SBS) of different resin cements to such surface-treated zirconia ceramics. Materials and Methods: Forty-five zirconia specimens were randomly assigned to surface-treatment group… Show more

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Cited by 6 publications
(9 citation statements)
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“…Sales et al [21], who also used the Zircos-E system for their research. Similar differences between sandblasted samples and those additionally etched with a strong acid solutions were also observed in other studies [12,23,24]. Proper surface treatments may promote the micromechanical interlocking of resin cement by creating fitting roughness and increasing surface energy [11,[25][26][27].…”
Section: Discussionsupporting
confidence: 80%
“…Sales et al [21], who also used the Zircos-E system for their research. Similar differences between sandblasted samples and those additionally etched with a strong acid solutions were also observed in other studies [12,23,24]. Proper surface treatments may promote the micromechanical interlocking of resin cement by creating fitting roughness and increasing surface energy [11,[25][26][27].…”
Section: Discussionsupporting
confidence: 80%
“…This method involves air abrasion systems that emit a flow of air mixed with aluminum oxide (Al2O3) particles, which are used to abrade surfaces (16,17) . Particle diameter of 50 μm was found to give optimum results as concluded by some authors (18) . This mechanism relies on loosening the contaminated layers, creating surface irregularities and porosities, thus allowing the adhesive to interlock mechanically into these pores (16,19) .…”
Section: Introductionsupporting
confidence: 54%
“…Although sandblasting is used extensively as the mechanical method for increasing the zirconia's surface roughness, however, its effectiveness was influenced by several factors such as the abrasive particle size, the timing and the distance used for spraying the substrate (18) . Specifically, when huge grains are being used for closely-spraying the zirconia, the latter mechanical strength and qualities degrade, also microscopic fissures (21) occur as a result of the intense thermal shock that causes the zirconia phase to change from tetragonal phase to monoclinic phase.…”
Section: Introductionmentioning
confidence: 99%
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