Resin adhesion strengths to zirconia ceramics after primer treatment with silane coupling monomer or oligomer

Abstract

Resin bonding to zirconia ceramics is difficult to achieve using the standard methods for conventional silica-based dental ceramics, which employ silane coupling monomers as primers. The hypothesis in this study was that a silane coupling oligomer -a condensed product of silane coupling monomers-would be a more suitable primer for zirconia. To prove this hypothesis, the shear bond strengths between a composite resin and zirconia were compared after applying either a silane coupling monomer or oligomer. The shear bond strength increased after applying a non-activated ethanol solution of the silane coupling oligomer compared with that achieved when applying the monomer. Thermal treatment of the zirconia at 110°C after application of the silane coupling agents was essential to improve the shear bond strength between the composite resin cement and zirconia.

High bonding strength between zirconia and composite resin based on combined surface treatment for dental restorations

“…When the experimental novel silane agent is initiated by aqueous hydrochloric acid, the C-H groups in ≡Si-O-CH 3 (or ≡Si-O-CH 2 CH 3 ) become significantly weaker, while the ≡Si-OH group becomes stronger and, finally, a very strong -Si-O-Zr group appears. 35 These results indicate that hydrochloric acid effectively promotes the hydrolysis of 3-MPTS, resulting in the adherence of hydrolyzed 3-MPTS to the ceramic surface by chemical bonds. The SEM observation (Figure 5(b)) reveals that air-particle abrasion with alumina particles is a suitable zirconia surface treatment method for increasing the surface energy of ceramics and the wettability between resins and ceramics.…”

“…As a result, some incompletely hydrolyzed 3-MPTS molecules are adsorbed physically on the ceramic surface, competitively occupying the Zr-O positions on the ceramic surface and hindering the formation of Zr-O-Si bonds. 33–35 For example, the carbonyl groups of 4-methacryloxyethyltrimelliticacidanhydride (4-META) are bonded to the silanol groups on the ceramic surface by hydrogen bonding, which hinders the chemical adsorption of 3-MPTS molecules, thus leading to a reduction in their condensation efficiency. This effect influences the bonding strength between the zirconia ceramic surface and composite resin.…”

Alternative radiopacifiers for polymethyl methacrylate bone cements: Silane-treated anatase titanium dioxide and yttria-stabilised zirconium dioxide

“…FT-IR results confirmed that the silane was bound to the surface of the radiopacifiers, similar to other studies using the same silane (MPS) and similar protocols to effectively coat titanium dental implants and yttria-stabilised zirconium ceramics. 61,62 The higher thermal conductivity of TiO 2 did not drastically alter the setting properties and heat dissipation of bone cement. Higher levels of metal oxide fillers ('40%w/w) may be required to observe such an effect as reported in the literature.…”

“…FT-IR results confirmed that the silane was bound to the surface of the radiopacifiers, similar to other studies using the same silane (MPS) and similar protocols to effectively coat titanium dental implants and yttria-stabilised zirconium ceramics. 61,62…”

Toughening of highly translucent zirconia by monoclinic ZrO₂ and SiO₂ particle coating

“…The major clinical problem with the use of zirconiabased ceramics is the difficulty in achieving suitable bonding to luting agents [28][29][30] or veneering/glazing ceramics 31,32) . The presence of SiO2 on the coating layer would be preferable to achieve suitable bonding to luting agents/primers containing silane coupling agents and also to silica based veneering/grazing ceramics.…”