›› 2019, Vol. 39 ›› Issue (5): 390-394.

• Basic Research • Previous Articles     Next Articles

Durability evaluation of bonding between one type of self-adhesive resin cement and zirconia ceramics

  

  • Received:2018-11-01 Revised:2018-12-06 Online:2019-05-28 Published:2019-05-21

Abstract: Objective To evaluate the bonding strength and durability of one type of self-adhesive resin cement RelyXTM U200 bonding to zirconia ceramic. Methods 90 pieces of zirconia ceramic (Y-TZP) plates were sandblasted and randomly divided into 2 groups, bonding with a self-adhesive resin cement RelyXTM U200 (RU group) and a conventional resin cement RelyX Veneer combined with zirconia primer (ZPRV group, control group) to produce Y-TZP/resin cement /composite resin adhesive specimens. Then adhesive specimens were randomly divided into 3 subgroups (n=15) to receive different treatment methods: water storage at 37 ℃ for 24 hours, 30,000 thermal cycles, and water storage at 37 ℃ for 6 months, followed by shear bond strength test and failure mode analysis. Double-layered Y-TZP adhesive specimens (RU and ZPRV groups) were immersed in deionized water after 1, 7, 14, 21, 30, 60 and 90 days, using inductively coupled plasma mass spectrometry (ICP-MS) to detect the phosphorus release. Results The two bonding strategies achieved similar bond strength between zirconia ceramic and composite resin (P=0.841). After aging, the bond strength decreased (P<0.05) and the proportion of adhesive failure in each group increased. The RU group obtained the same or even higher bonding durability than the ZPRV group. ICP-MS detected the release of phosphorus only in the Ctr-RU (only self-adhesive resin cement RelyXTM U200, control group), RU and ZPRV groups, and the release of phosphorus increased with the prolongation of soaking time. Conclusion RelyXTM U200 resin cement can achieve the desired bond strength and bond durability for zirconia ceramics bonding without primer pre-treatment.

Key words: zirconia, self-adhesive resin cement, adhesion, aging, ICP-MS

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