title: Shear and micro-shear bond strengths of four self-etching adhesives measured immediately and 24 hours after application.
abstract: This study measured the immediate and 24 h shear (SBS) and micro-shear bond strengths (MSBS) to dentin of four self-etching adhesives. A resin composite was bonded using each adhesive to the area of 5-mm diameter for SBS test or 0.75-mm diameter for MSBS test of flat bovine dentin. The bond strengths of all adhesives at 10 min were lower than at 24 h for both tests. The mean SBS (MPa, 10 min, 24 h) were similar in ranking order at both time periods that is: Clearfil SE Bond (21.2, 25.3) >Clearfil TriS Bond (12.7, 19.5)=i Bond (11.7, 19.5)=G Bond (11.1, 16.6). For the MSBS test, G Bond provided equivalent mean bond strength (35.0) to Clearfil SE Bond (36.9) and higher than the other adhesives at 24 h [i Bond (26.3), Clearfil TriS Bond (28.5)]. In conclusion, the MSBS test was slightly more discriminating than the SBS test.
authors.affiliation: Department of Operative Dentistry and Endodontics, Mahidol University, 6 Yothee Road, Rajthewee, Bangkok, Thailand. dtchn@mahidol.ac.th
authors.forename: Choltacha
authors.initials: C
authors.lastname: Harnirattisai
authors.forename: Panitta
authors.initials: P
authors.lastname: Roengrungreang
authors.forename: Utumporn
authors.initials: U
authors.lastname: Rangsisiripaiboon
authors.forename: Pisol
authors.initials: P
authors.lastname: Senawongse
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods; D000268:Adhesiveness; D000818:Animals; D002417:Cattle; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003764:Dental Materials / Q000737:chemistry; D003799:Dental Stress Analysis / Q000295:instrumentation; D003804:Dentin / Q000648:ultrastructure*; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D055115:Light-Curing of Dental Adhesives; D008689:Methacrylates / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry*; D033081:Shear Strength; D013314:Stress, Mechanical; D013997:Time Factors
chemical_list: C438313:Clearfil SE Bond; C515604:Clearfil Tri-S Bond; D003188:Composite Resins; D003764:Dental Materials; D017220:Dentin-Bonding Agents; C444701:Filtek Z250; C498353:G-Bond; D008689:Methacrylates; D019279:Resin Cements; C477386:iBond; C069749:methacryloyloxydecyl dihydrogen phosphate