title: Ultrastructural observation of the acid-base resistant zone of all-in-one adhesives using three different acid-base challenges.
abstract: The aim of this study was to analyze the ultrastructure of the dentin-adhesive interface using two all-in-one adhesive systems (Clearfil Tri-S Bond, TB; Tokuyama Bond Force, BF) after different acid-base challenges. Three solutions were used as acidic solutions for the acid-base challenges: a demineralizing solution (DS), a phosphoric acid solution (PA), and a hydrochloric acid solution (HCl). After the acid-base challenges, the bonded interfaces were examined by scanning electron microscopy. Thickness of the acid-base resistant zone (ABRZ) created in PA and HCl was thinner than in DS for both adhesive systems. For BF adhesive, an eroded area was observed beneath the ABRZ after immersion in PA and HCl, but not in DS. Conversely for TB adhesive, the eroded area was observed only after immersion in PA. In conclusion, although the ABRZ was observed for both all-in-one adhesive systems, its morphological features were influenced by the ingredients of both the adhesive material and acidic solution.
authors.affiliation: Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Japan. miho78419@gmail.com
authors.forename: Miho
authors.initials: M
authors.lastname: Tsujimoto
authors.forename: Toru
authors.initials: T
authors.lastname: Nikaido
authors.forename: Go
authors.initials: G
authors.lastname: Inoue
authors.forename: Alireza
authors.initials: A
authors.lastname: Sadr
authors.forename: Junji
authors.initials: J
authors.lastname: Tagami
mesh_terms: D019342:Acetic Acid / Q000737:chemistry; D000143:Acids; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D001896:Boron Compounds / Q000737:chemistry; D002122:Calcium Chloride / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry; D003804:Dentin / Q000648:ultrastructure*; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D006801:Humans; D006851:Hydrochloric Acid / Q000737:chemistry; D055115:Light-Curing of Dental Adhesives; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008768:Methylmethacrylates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D010710:Phosphates / Q000737:chemistry; D010756:Phosphoric Acids / Q000737:chemistry; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors
chemical_list: D000143:Acids; D001896:Boron Compounds; C515604:Clearfil Tri-S Bond; D003188:Composite Resins; D017220:Dentin-Bonding Agents; C488280:Metafil Flo; D008689:Methacrylates; D008768:Methylmethacrylates; D010710:Phosphates; D010756:Phosphoric Acids; D011109:Polymethacrylic Acids; D019279:Resin Cements; C020946:triethylene glycol dimethacrylate; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate; C005044:hydroxyethyl methacrylate; C049495:Super-bond; C030242:phosphoric acid; D002122:Calcium Chloride; D019342:Acetic Acid; D006851:Hydrochloric Acid; C018279:sodium phosphate