title: Analysis of Self-Adhesive Resin Cement Microshear Bond Strength on Leucite-Reinforced Glass-Ceramic with/without Pure Silane Primer or Universal Adhesive Surface Treatment.
abstract: OBJECTIVE
  To evaluate the microshear bond strength (μSBS) of self-adhesive resin (SA) cement on leucite-reinforced glass-ceramic using silane or universal adhesive.
  
  
  METHODS
  Ceramic blocks were etched with 9.5% hydrofluoric acid and divided into three groups (n = 16): (1) negative control (NC) without treatment; (2) Single Bond Universal (SBU); (3) RelyX Ceramic Primer as positive control (PC). RelyX Unicem resin cement was light-cured, and μSBS was evaluated with/without thermocycling. The μSBS was analyzed using one-way analysis of variance. The fractured surfaces were examined using stereomicroscopy and scanning electron microscopy (SEM).
  
  
  RESULTS
  Without thermocycling, μSBS was highest for PC (30.50 MPa ± 3.40), followed by SBU (27.33 MPa ± 2.81) and NC (20.18 MPa ± 2.01) (P < 0.05). Thermocycling significantly reduced μSBS in SBU (22.49 MPa ± 4.11) (P < 0.05), but not in NC (20.68 MPa ± 4.60) and PC (28.77 MPa ± 3.52) (P > 0.05). PC and NC predominantly fractured by cohesive failure within the ceramic and mixed failure, respectively.
  
  
  CONCLUSIONS
  SBU treatment improves μSBS between SA cement and glass ceramics, but to a lower value than PC, and the improvement is eradicated by thermocycling. NC exhibited the lowest μSBS, which remained unchanged after thermocycling.
authors.affiliation: Department of Conservative Dentistry, Wonju Severance Christian Hospital, Wonju College of Medicine, Yonsei University, Wonju 220-701, Republic of Korea.
authors.forename: Yoon
authors.initials: Y
authors.lastname: Lee
authors.affiliation: Department of Conservative Dentistry and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 110-749, Republic of Korea.
authors.forename: Jae-Hoon
authors.initials: JH
authors.lastname: Kim
authors.affiliation: Dental Research Institute and School of Dentistry, Seoul National University, Seoul 110-749, Republic of Korea.
authors.forename: Jung-Soo
authors.initials: JS
authors.lastname: Woo
authors.affiliation: Department of Dentistry, Inje University Seoul Paik Hospital, Seoul 100-032, Republic of Korea.
authors.forename: Young-Ah
authors.initials: YA
authors.lastname: Yi
authors.affiliation: Nutrition Education Major, Graduate School of Education, Sangmyung University, Seoul 110-743, Republic of Korea.
authors.forename: Ji-Yun
authors.initials: JY
authors.lastname: Hwang
authors.affiliation: Department of Conservative Dentistry and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 110-749, Republic of Korea.
authors.forename: Deog-Gyu
authors.initials: DG
authors.lastname: Seo
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry*; D002516:Ceramics / Q000737:chemistry*; D001840:Dental Bonding; D008422:Materials Testing; D019279:Resin Cements / Q000032:analysis* / Q000737:chemistry*; D033081:Shear Strength; D012821:Silanes / Q000737:chemistry*
chemical_list: D000538:Aluminum Silicates; D019279:Resin Cements; D012821:Silanes; C078519:leucite; C023506:Glass ceramics