title: The role of functional phosphoric acid ester monomers in the surface treatment of yttria-stabilized tetragonal zirconia polycrystals.
abstract: This study aimed to evaluate the bond strength of a resin cement to yttria-stabilized tetragonal zirconia polycrystals (Y-TZPs) treated with three different phosphate functional monomers containing primers by measuring the water contact angle. Seventy Y-TZP discs were divided into seven experimental groups (n=10), including an untreated (control) group. Specimens were treated with one of the following monomers: MDP (MD), GPDM (GP), and Phenyl-P (PP). After primer application and air drying, half the treated specimens were ultrasonically cleaned in ethanol for 2 min (MD-e, GP-e, and PP-e), and contact angles were measured. The tensile bond strength test was performed after storage for 24 h in 37°C water. The contact angle on the MD-e surface (64°) was significantly higher than that on the Con, GP-e, and PP-e surfaces (51°-52°). The application of the MDP-containing primer resulted in significantly higher bond strength between Y-TZP ceramics and a resin cement.
authors.affiliation: Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.
authors.forename: Masami
authors.initials: M
authors.lastname: Arai
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Takagaki
authors.forename: Akifumi
authors.initials: A
authors.lastname: Takahashi
authors.forename: Junji
authors.initials: J
authors.lastname: Tagami
mesh_terms: D001840:Dental Bonding; D003799:Dental Stress Analysis; D008422:Materials Testing; D010755:Organophosphates; D019279:Resin Cements; D033081:Shear Strength; D013499:Surface Properties; D015019:Yttrium; D015040:Zirconium
chemical_list: D010755:Organophosphates; D019279:Resin Cements; D015019:Yttrium; D015040:Zirconium