title: Sorption and solubility testing of orthodontic bonding cements in different solutions.
abstract: To evaluate and compare the solubility and sorption of orthodontic bonding cements after immersion in different solutions, five different cements were used: a fluoride-containing resin composite, a light-cured glass ionomer cement, a light-cured resin composite, a paste-paste chemically cured resin composite, and a liquid-paste chemically cured resin composite. Five different solutions were employed: distilled water, artificial saliva, an alcohol-free mouthrinse solution (Orthokin), a 5% alcohol mouthrinse solution (Perioaid), and a 75% ethanol/water solution. Five disc specimens (15 mm x 0.85 mm) were used for each experimental condition. Materials were handled following manufacturers' instructions and were ground wet with silicon carbide paper. Solubility and sorption of the materials were calculated by means of weighing the samples before and after immersion and desiccation. Data were analyzed by two-way ANOVA and Student-Newman-Keuls test (p < 0.05). The light-cured glass ionomer cement showed the lowest solubility and the highest sorption values. When using alcohol-containing solutions as storage media, solubility of the paste-paste chemically cured resin composite increased, and sorption values for the tested chemically cured resin composites were also increased. The use of alcohol-free mouthrinses does not affect sorption and solubility of orthodontic cements. The chemically cured (paste-paste) composite resin cement, requiring a mixing procedure, was the most affected by immersion in alcohol-containing solutions.
authors.affiliation: Department of Dental Materials, University of Granada, Avda Fuerzas Armadas, Granada, Spain. toledano@ugr.es
authors.forename: Manuel
authors.initials: M
authors.lastname: Toledano
authors.forename: Raquel
authors.initials: R
authors.lastname: Osorio
authors.forename: Estrella
authors.initials: E
authors.lastname: Osorio
authors.forename: Fátima S
authors.initials: FS
authors.lastname: Aguilera
authors.forename: Alejandro
authors.initials: A
authors.lastname: Romeo
authors.forename: Blanca
authors.initials: B
authors.lastname: de la Higuera
authors.forename: Franklin
authors.initials: F
authors.lastname: García-Godoy
mesh_terms: D000042:Absorption; D001672:Biocompatible Materials / Q000737:chemistry*; D003738:Dental Cements / Q000737:chemistry*; D008422:Materials Testing; D016910:Orthodontic Brackets; D012995:Solubility; D012996:Solutions / Q000737:chemistry*
chemical_list: D001672:Biocompatible Materials; D003738:Dental Cements; D012996:Solutions