Effects of a convenient silica-coating treatment on shear bond strengths of porcelain veneers on zirconia-based ceramics

Abstract

Porcelain veneering of zirconia is necessary, but chipping of the veneer may cause clinical problems. We investigated the effects of silica coating to improve the bond strength between porcelain veneers and zirconia-based ceramics. The ceramics tested were zirconia/ alumina nanocomposites stabilized with ceria. Three surface treatments, grinding with a carborundum point (CA), sandblasting with alumina (SB), and Silano-Pen treatment (SP), were performed. Untreated specimens (NT) were examined as a control. The surface roughnesses and contact angles after treatment were measured. Shear bond tests were conducted, and the average strengths were calculated. EPMA was used for elemental identifications and surface observations. The bond strengths with SP were 20.00±3.43MPa and were significantly larger than that (15.35±3.12 MPa) of NT (p<0.05). However, differences among treated specimens were not significant. Moreover, SP gave superior wettability, and smoothness as good as NT. These data suggest that SP affects the bond strength between zirconia and a porcelain veneer.

In vitro short-term bonding performance of zirconia treated with hot acid etching and primer conditioning etching and primer conditioning

“…It has been shown that strong resin bonding to Y-TZP could be achieved by silica coating and silanization [2][3][4]13,17) .…”

Efeito do tratamento de superfície na resistência de união entre porcelana e uma cerâmica à base de zircônia

“…Os estudos observaram que o comportamento encontrado foi dependente do tipo de tratamento e tipo de cerâmica, porém, nem sempre havia uma melhora na união entre os materiais [21,[24][25][26][27][28]. Além disso, o uso de tratamentos que geram tensões na superfície da Y-TZP pode ser contraindicado devido à possível indução de transformação da fase tetragonal para monoclínica, que leva à degradação das suas propriedades mecânicas em baixas temperaturas (low temperature degradation -LTD) [6,7].…”

Ca-P spots modified zirconia by liquid precursor infiltration and the effect on osteoblast-like cell responses

“…Moreover, seldom cases of allergic reactions and MRI problems caused by zirconia ceramics have been reported. Besides, not only was zirconia used as a biomaterial find application in hip joint replacement 9) , it has also been highly used as a metal replacement for crowns, prostheses, brackets and implants 10,11) . However, as implants, zirconia shows morphological fixation with the surrounding tissues without producing any chemical or biological bonding 12) .…”