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  • Title: Effect of surface treatment and liner material on the adhesion between veneering ceramic and zirconia.
    Author: Yoon HI, Yeo IS, Yi YJ, Kim SH, Lee JB, Han JS.
    Journal: J Mech Behav Biomed Mater; 2014 Dec; 40():369-374. PubMed ID: 25282467.
    Abstract:
    Fully sintered zirconia blocks, each with one polished surface, were treated with one of the followings: 1) no treatment, 2) airborne-particle abrasion with 50μm alumina, and 3) airborne-particle abrasion with 125μm alumina. Before veneering with glass ceramic, either liner Α or liner B were applied on the treated surfaces. All veneered blocks were subjected to shear force in a universal testing machine. For the groups with liner A, irrespective of the particle size, air abrasion on Y-TZP surfaces provided greater bond strength than polishing. Application of liner B on an abraded zirconia surface yielded no significant influence on the adhesion. In addition, specimens with liner A showed higher bond strength than those with liner B, if applied on roughened surfaces. Fractured surfaces were observed as mixed patterns in all groups. For the liner A, surface treatment was helpful in bonding with veneering ceramic, while it was ineffective for the liner B.
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