Internal coating of zirconia restoration with silica-based ceramic improves bonding of resin cement to dental zirconia ceramic

Abstract

Resin bonding to zirconia ceramic cannot be established by standard methods that are utilized for conventional silicabased dental ceramics. This study was aimed to examine the tensile bond strength of resin cement to zirconia ceramic using a new laboratory technique. Sixty-four zirconia ceramic specimens were air-abraded using Al 2 O 3 particles and divided into two groups; the control group with no pretreatment (Control), and the group pretreated using the internal coating technique (INT), in which the surface of the zirconia specimens were thinly coated by fusing silica-based ceramic and air-abraded in the same manner. The specimens in each group were further divided into two subgroups according to the silane coupling agents applied; a mixture of dentin primer/silane coupling agent (Clearfil SE Bond Primer/Porcelain Bond Activator) or a newly developed single-component silane coupling agent (Clearfil Ceramic Primer). After bonding with dual-cured resin cement (Panavia F 2.0), they were stored in water for 24 h and half of them were additionally subjected to thermal cycling. The tensile bond strengths were tested using a universal testing machine. ANOVAs revealed significant influence of ceramic surface pretreatment (p < 0.001), silane coupling agent (p < 0.001) and thermal cycling (p < 0.001); the INT coating technique significantly increased the bond strengths of resin cement to zirconia ceramic, whereas thermal cycling significantly decreased the bond strengths. The use of a single-component silane coupling agent demonstrated significantly higher bond strengths than that of a mixture of dentin primer/silane coupling agent. The internal coating of zirconia dental restorations with silica-based ceramic followed by silanization may be indicated in order to achieve better bonding for the clinical success.

Effects of Different Surface Treatment Methods and MDP Monomer on Resin Cementation of Zirconia Ceramics an In Vitro Study

“…In studies it is shown that using MDP monomer containing bonding agents increase the bond strength between sandblasted zirconia and resin cement. 14,[52][53][54][55][56][57] So two resin cements were used in this study to evaluate efficiency of MDP monomer and obtained results in sandblasting group are agreement with pervious studies. Use of MDP monomer containing resin cement Panavia F2.0 increased the bond strength with sandblasting.…”

Bonding between oxide ceramics and adhesive cement systems: A systematic review

“…abrasive techniques can result in structural damage, such as grain pullout and material loss, creating flaws that can decrease strength (57,76,(82)(83)(84)(85). Other coating techniques do not induce any surface flaws, but might instead affect the fit of a restoration as the coating adds material to the surface (69,86).…”

Effect of ceramic material type on the fracture load of inlay-retained and full-coverage fixed dental prostheses

“…Airabrasion with aluminum oxide particles (Al 2 O 3 ) is the most commonly used mechanical treatment [14,15]. Among chemical conditioning methods, Kitayama et al showed that fusing of a thin layer of silica based ceramic of zirconia ceramic followed by silanization can improve bond strength of resin cement [16].…”