Effect of Surface Condition of Dental Zirconia Ceramic (Denzir) on Bonding

Abstract

Yttria partially stabilized zirconia（YPSZ）ceramics are suitable for dental and medical use because of their high fracture toughness and chemical durability. The purpose of this study was to examine the bonding behavior of a dental YPSZ ceramic, Denzir. After being subjected to various surface treatments, Denzir specimens were bonded to each other using an adhesive resin composite, glass ionomer, or zinc phosphate cement. Bonding strength was then determined by the shearing test. No significant differences（p＞0.05）were observed between SiC-and Al 2 O 3 -blasted specimens. In all surface treatments, the shear bond strength significantly（p＜0.05）increased in the order of adhesive resin composite cement ＞ glass ionomer cement ＞ zinc phosphate cement. Moreover, silanization with methacryloxy propyl trimethoxysilane slightly increased the bonding strength of the adhesive resin composite cement.

Effects of Dental Adhesive Cement and Surface Treatment on Bond Strength and Leakage of Zirconium Oxide Ceramics

“…Uo et al 22) reported that the bond strength of zirconium-based ceramic (Denzir) pretreated with silanization using phosphate resin cement was lower than that of silicabased ceramic (Empress), indicating that silanization did not improve the bond strength of zirconium oxide ceramics. Therefore, the results of this study were in agreement with those of Uo et al 30) . Further, Kajiwara et al 23) showed that sandblasting followed by silanization significantly increased the bond strength of zirconium oxide ceramics compared with #600 polishing or sandblasting, and that the silane agent improved the wettability of bonding surface.…”

“…With adhesive resin cements, results from this study revealed that bond strength values were higher for sandblasted specimens than for #600-polished specimens. On the other hand, with resinreinforced glass ionomer cements, no significant differences were found between sandblasted specimens and #600-polished specimens, which was consistent with the results of Uo et al 30) . With adhesive resin cements, sandblasting served to prevent marginal leakage -which was not achieved in the case of resin-reinforced glass ionomer cements.…”

Effect of sandblasting and various metal primers on the shear bond strength of resin cement to Y-TZP ceramic

“…In zirconia ceramic, to promote micromechanical retention, sandblasting method can be used instead of acid etching, and for chemical bonding, instead of silane coupling agents, adhesive monomer could be applied [26]. The fact that both sandblasting and metal primers influence the bond strength of dental ceramics has been demonstrated in previous studies [1,[27][28][29]. However, airborne particle abrasion has the possibility to create subcritical microcracks and phase transformation within the zirconia surface, consequently causing unfavorable changes of superior mechanical properties of zirconia ceramics [13,30].…”

Application of flake shaped glass (Glass Flake) filler for dental composite resin

“…A part of FSG was silanized with 3-methacryloxypropyl trimethoxysilane (Tokyo-Kasei, Tokyo, Japan) using a reported method. 9) Crushed silica particles (CSF; Tatsumori, Tokyo, Japan), which are used as a conventional silica filler of commercial CR, were used as a reference for the filler material.…”