title: Effects of the solvent evaporation technique on the degree of conversion of one-bottle adhesive systems.
abstract: This study evaluated the effect of four methods of solvent evaporation on the degree of conversion (DC) of seven one-bottle adhesive systems: Excite (EX), ONE-STEP (OS), Optibond Solo Plus (OB), Prime&Bond 2.1 (PB), Prime&Bond NT (NT), Single Bond (SB) and Single Bond Plus (SP) using Fourier Transform Infrared Analysis (FTIR). Adhesive resins were: 1) applied to KBr pellet surfaces and left undisturbed for 30 seconds (condition 1), 2) left undisturbed for 30 seconds and air-dried with an air stream for 10 seconds (condition 2), 3) left undisturbed for 60 seconds (condition 3) and 4) left undisturbed for 60 seconds and air-dried for 10 seconds (condition 4) before curing. FTIR spectra were obtained and the DC was calculated by comparing the ratio of aliphatic/aromatic double carbon bonds before and after light-activation for 10 seconds (XL 3000, 3M). The results of each product were analyzed by one-way repeated measure ANOVA and post-hoc Tukey's test (p<0.05). The DC of PB, NT, OB and SP adhesives was not affected by the four evaporation conditions, while the DC of EX, OS and SB changed according to the evaporation method. The results suggested that the DC of some adhesives was similar regardless of the evaporation method when no water from dentin or rinsing was involved. Other bonding agents showed higher DC after specific conditions of solvent evaporation.
authors.affiliation: University of Campinas, Piracicaba School of Dentistry, Department of Restorative Dentistry, Piracicaba, SP, Brazil. giannini@fop.unicamp.br
authors.forename: Marcelo
authors.initials: M
authors.lastname: Giannini
authors.forename: Cesar Augusto Galvão
authors.initials: CA
authors.lastname: Arrais
authors.forename: Paulo Moreira
authors.initials: PM
authors.lastname: Vermelho
authors.forename: Rodrigo Sant'Anna
authors.initials: RS
authors.lastname: Reis
authors.forename: Luis Presley Serejo
authors.initials: LP
authors.lastname: dos Santos
authors.forename: Edson Roberto
authors.initials: ER
authors.lastname: Leite
mesh_terms: D000096:Acetone / Q000737:chemistry / Q000528:radiation effects; D000388:Air; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry / Q000528:radiation effects; D002244:Carbon / Q000737:chemistry / Q000528:radiation effects; D017220:Dentin-Bonding Agents / Q000737:chemistry* / Q000528:radiation effects; D003890:Desiccation; D006801:Humans; D008027:Light; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry / Q000528:radiation effects; D011109:Polymethacrylic Acids / Q000737:chemistry / Q000528:radiation effects; D019279:Resin Cements / Q000737:chemistry / Q000528:radiation effects; D012997:Solvents / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013997:Time Factors; D014867:Water / Q000737:chemistry
chemical_list: C103506:Bis-GMA, BPDM, HEMA dental-bonding resin; D017220:Dentin-Bonding Agents; C420130:Excite cement; D008689:Methacrylates; C451600:OptiBond Solo Plus; D011109:Polymethacrylic Acids; C425843:Prime and Bond NT; D019279:Resin Cements; C511238:Single Bond Plus; D012997:Solvents; C444444:prime and bond 2.1; C115612:single bond; D014867:Water; D000096:Acetone; D017438:Bisphenol A-Glycidyl Methacrylate; D002244:Carbon