Bond strength of surface-treated novel high translucent zirconia to enamel

Abstract

Aim:The aim of the present study was to evaluate the shear bond strength of zirconia, stabilised with 5% yttria, luted to enamel and to evaluate the fracture pattern at loss of retention. Methods: A total of 53 test specimen were manufactured from two partially stabilised zirconia materials, Zirkonzahn Prettau Anterior (ZPA) (n ¼ 16) and Whitepeaks CopraSmile Symphony 5 layer (WCS) (n ¼ 18), and a lithium disilicate (Ivoclar e.Max Press) (n ¼ 19) acting as control. All test specimens were cemented to human enamel with Variolink Esthetic DC and then subjected to a shear bond strength test. Fracture and surface analysis were performed using light and scanning electron microscope. Results: No significant differences in shear bond strength were detected when analysing the three groups. Dividing them according to the fracture pattern significant difference in shear bond strength between the two zirconia groups could be seen analysing test bodies with failure of adhesion to the test body, but not to enamel. The ZPA had higher shear bond strength (23.68 MPa) than WCS (13.00 MPa). No significant differences were seen compared to the control group (19.02 MPa).Conclusion: Partially stabilised zirconia shows potential as a material to be used where macro mechanical bonding is not possible, although this study does not reveal how or if the bonding deteriorates over time. ARTICLE HISTORY

The resin bond to high‐translucent zirconia—A systematic review

“…Most of the studies applied functional monomer-based primers and resin cements. All specimens in the identified studies underwent simulated aging, in terms of water storage, 86,95,103,105,107,110 thermocycling, 97,111 thermocycling combined with water storage, 96,98,99,101,102,104,106,108,109 or thermocycling combined with water storage and mechanical load cycling. 100 Tensile, micro-tensile, shear, and pull-out tests were applied to test and measure bond strength.…”

“…APA with alumina was the most widely tested surface treatment in the identified studies (Table 2). Most of these focused on the effects of APA [96][97][98][99][100]103,105,106,111 and found them to improve resin bonds to 5Y-TZP zirconia. Failure modes were either mixed or cohesive (Table 2), indicating strong resin bonds.…”

Effect of sintering regimes and thickness on optical properties of zirconia ceramics for dental applications

“…2,3 Recently, optical properties of zirconia ceramics are an attractive topic that is being investigated by researchers. 14,[20][21][22][23][24][25][26][27][28][29][30][31][32][33] Some of the studies are related with the thickness or contrast ratio/translucency of various zirconia materials, 14,[20][21][22][23][24][25][26] and some are interested in sintering conditions. [27][28][29][30][31][32][33] However, a comparative study of the effect of different thicknesses and various sintering regimes (slow, speed, normal, translucency) on TP and final microstructure has not been studied enough for the new type of zirconia materials that have Y 2 O 3 greater than 3-9 wt%.…”

Zircônia ultra translúcida: Revisão de literatura

“…Pode-se inferir que há uma ligação efetiva entre o cimento resinoso e a 5Y-PSZ após a abrasão de partículas de alumina e a aplicação de monômero adesivo MDP. A implicação clínica do valor de força de união na zircônia ultra translúcida é a possibilidade de usá-la em restaurações não retentivas 25 . Isso a torna um material promissor para aplicabilidade em laminados cerâmicos adotando-se uma abordagem mais conservadora.…”