title: Dentin bonding performance using Weibull statistics and evaluation of acid-base resistant zone formation of recently introduced adhesives.
abstract: Dentin bonding durability of recently introduced dental adhesives: Clearfil SE Bond 2 (SE2), Optibond XTR (XTR), and Scotchbond Universal (SBU) was investigated using Weibull analysis as well as analysis of the micromorphological features of the acid-base resistant zone (ABRZ) created for the adhesives. The bonding procedures of SBU were divided into three subgroups: self-etch (SBS), phosphoric acid (PA) etching on moist (SBM) or dry dentin (SBD). All groups were thermocycled for 0, 5,000 and 10,000 cycles followed by microtensile bond strength testing. Acid-base challenge was undertaken before SEM and TEM observations of the adhesive interface. The etch-and-rinse method with SBU (SBM and SBD) created inferior interfaces on the dentin surface which resulted in reduced bond durability. ABRZ formation was detected with the self-etch adhesive systems; SE2, XTR and SBS. In the PA etching protocols of SBM and SBD, a thick hybrid layer but no ABRZ was detected, which might affect dentin bond durability.
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: Rui
authors.initials: R
authors.lastname: Guan
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Takagaki
authors.forename: Naoko
authors.initials: N
authors.lastname: Matsui
authors.forename: Takaaki
authors.initials: T
authors.lastname: Sato
authors.forename: Michael F
authors.initials: MF
authors.lastname: Burrow
authors.forename: Joseph
authors.initials: J
authors.lastname: Palamara
authors.forename: Toru
authors.initials: T
authors.lastname: Nikaido
authors.forename: Junji
authors.initials: J
authors.lastname: Tagami
mesh_terms: D000134:Acid Etching, Dental; D001840:Dental Bonding; D003738:Dental Cements; D003804:Dentin; D017220:Dentin-Bonding Agents; D006801:Humans; D008422:Materials Testing; D019279:Resin Cements; D013718:Tensile Strength
chemical_list: D003738:Dental Cements; D017220:Dentin-Bonding Agents; D019279:Resin Cements