title: Evaluation of the esthetic effect of resin cements and try-in pastes on ceromer veneers.
abstract: OBJECTIVE
  To evaluate the influence of various shades of resin cements on the final color of ceromer veneers and analyse the agreement of resin cements and corresponding try-in pastes.
  
  
  METHODS
  Ceromer disks (Ceramage, 1.0mm×10mm diameter) were bonded to resin background disks (3.0mm×10mm diameter) using five shades of resin cements (RelyX Veneer), whilst butylphthalate was placed between ceromer and resin background as the control group (n=5). The corresponding try-in pastes were placed between ceromer and resin background disks using the specimens of the control group. After colorimetric evaluations, the thickness of ceromer disks was reduced to 0.8 and 0.5mm. Color measurements were repeated at each thickness. To analyse masking ability of the cement, resin background disks with 0.1mm thick cement layer were fabricated using five shades of resin cements (n=5).
  
  
  RESULTS
  Two-way ANOVA of ΔE values of cement shades and control group revealed significant differences in cement shade and thickness, and their interaction (p<0.001). The 0.5mm thick Ceramage specimens yielded the highest mean ΔE values (2.44±1.12) for all cement shade groups. A3, WO, and B05 shade of resin cements created perceptible color differences (ΔE>2.0) in 0.5mm thick specimens and WO shade in 0.8mm thick specimens. There were no perceptible color differences between resin cements and corresponding try-in pastes.
  
  
  CONCLUSIONS
  The effect of resin cements on the final color of ceromer veneers depended on cement shades and thickness of ceromer. The color of resin cements and corresponding try-in pastes achieved high agreement.
authors.affiliation: Key Laboratory for Oral Biomedical Engineering, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, PR China.
authors.forename: Wenzhong
authors.initials: W
authors.lastname: Xing
authors.forename: Tao
authors.initials: T
authors.lastname: Jiang
authors.forename: Xiao
authors.initials: X
authors.lastname: Ma
authors.forename: Shanshan
authors.initials: S
authors.lastname: Liang
authors.forename: Zhejun
authors.initials: Z
authors.lastname: Wang
authors.forename: Yue
authors.initials: Y
authors.lastname: Sa
authors.forename: Yining
authors.initials: Y
authors.lastname: Wang
mesh_terms: D000704:Analysis of Variance; D002516:Ceramics / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D003776:Dental Porcelain / Q000737:chemistry*; D017267:Dental Prosthesis Design / Q000379:methods; D003793:Dental Restoration, Permanent; D003794:Dental Restoration, Temporary; D003801:Dental Veneers; D004955:Esthetics, Dental; D017797:Prosthesis Coloring; D019279:Resin Cements / Q000737:chemistry*
chemical_list: D003188:Composite Resins; D019279:Resin Cements; C111841:ceromer; D003776:Dental Porcelain