title: [Effect of a chemical primer on the bond strength of a zirconia ceramic with self-adhesive resin cement].
abstract: OBJECTIVE
  To evaluate the bond strength and durability of a self-adhesive resin cement with a zirconia ceramic pretreated by a zirconia primer.
  
  
  METHODS
  Zirconia ceramic (Vita Inceram YZ) plates with a thickness of 2.5 mm were fired, polished, and then cleaned. Half of the polished ceramic plates were sandblasted with 50 μm alumina particles at 0.3 MPa for 20 s. The surface compound weight ratios were measured via X-ray fluorescence microscopy. The polished and sandblasted ceramic plates were directly bonded with self-adhesive resin cement (Biscem) or were pretreated by a zirconia primer (Z Primer Plus) before bonding with Biscem. The specimens of each test group were divided into two subgroups (n=10) and subjected to the shear test after 0 and 10,000 thermal cycles. The data were analyzed via three-way ANOVA.
  
  
  RESULTS
  After air abrasion, 8.27% weight ratio of alumina attached to the zirconia surface. Compared with air abrasion, primer treatment more significantly improved the primary resin bond strength of the zirconia ceramic. The primary resin bond strength of the zirconia ceramic with no primer treatment was not affected by thermocycling (P>0.05). However, the primary resin bond strength of the zirconia ceramic with primer treatment was significantly decreased by thermocycling (P<0.05).
  
  
  CONCLUSIONS
  Primer treatment can improve the primary resin bond strengths of zirconia ceramics. However, the bond interface of the primer is not stable and rapidly degraded during thermocycling.
authors.forename: Hong
authors.initials: H
authors.lastname: Zhang
authors.forename: Ye
authors.initials: Y
authors.lastname: Jing
authors.forename: Rongrong
authors.initials: R
authors.lastname: Nie
authors.forename: Xiangfeng
authors.initials: X
authors.lastname: Meng
mesh_terms: D000269:Adhesives; D000537:Aluminum Oxide; D002516:Ceramics; D001840:Dental Bonding; D003776:Dental Porcelain; D003799:Dental Stress Analysis; D008422:Materials Testing; D019279:Resin Cements; D013499:Surface Properties; D015040:Zirconium
chemical_list: D000269:Adhesives; D019279:Resin Cements; D003776:Dental Porcelain; C095998:Adhesive cement; C070870:In-Ceram; D015040:Zirconium; D000537:Aluminum Oxide; C028541:zirconium oxide