title: Effect on the bond strengths of glass fiber posts functionalized with polydopamine after etching with hydrogen peroxide.
abstract: This paper evaluated the push-out bond strengths of glass fiber posts with poly-dopamine (poly-dopa) functionalized after etching with H2O2. Forty extracted human, single-rooted teeth were endodontically treated and a 9-mm post space was prepared in each tooth with post drills provided by the manufacturer. Specimens were randomly assigned into four groups (n=10 per group), depending on post surface treatment used: group C (control); group D (poly-dopa); group H (H2O2); and group HD (H2O2+poly-dopa). The push-out test was performed using a universal testing machine.
  
  
  RESULTS
  Bond strengths (MPa) were as follows: 4.678±0.911 (group C); 7.909±1.987 (group D); 6.519±0.893 (group H); and 9.043±1.596 (group HD). The bond strength of the resin cement to posts functionalized with poly-dopa was not affected by H2O2 pre-treatment, while conditioning using H2O2+poly-dopa resulted in higher bond strengths than H2O2 treatment only. Compared to H2O2 treatment, the bond strength of poly-dopa conditioning was superior.
authors.affiliation: Second Clinical Division, Peking University School and Hospital of Stomatology.
authors.forename: Qian
authors.initials: Q
authors.lastname: Chen
authors.forename: Xu-Yi
authors.initials: XY
authors.lastname: Wei
authors.forename: Mi
authors.initials: M
authors.lastname: Yi
authors.forename: Yun-Yang
authors.initials: YY
authors.lastname: Bai
authors.forename: Qing
authors.initials: Q
authors.lastname: Cai
authors.forename: Xin-Zhi
authors.initials: XZ
authors.lastname: Wang
mesh_terms: D001840:Dental Bonding; D003799:Dental Stress Analysis; D005898:Glass / Q000737:chemistry*; D006801:Humans; D006861:Hydrogen Peroxide / Q000737:chemistry*; D066298:In Vitro Techniques; D007211:Indoles / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D011108:Polymers / Q000737:chemistry*; D011176:Post and Core Technique; D011897:Random Allocation; D019279:Resin Cements / Q000737:chemistry; D013499:Surface Properties
chemical_list: D007211:Indoles; D011108:Polymers; D019279:Resin Cements; C009753:fiberglass; C568283:polydopamine; D006861:Hydrogen Peroxide