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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effect of air-drying on the solvent evaporation, degree of conversion and water sorption/solubility of dental adhesive models

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Author(s):
Bail, M. [1, 2] ; Malacarne-Zanon, J. [3] ; Silva, S. M. A. [4] ; Anauate-Netto, A. [5] ; Nascimento, F. D. [5] ; Amore, R. [5] ; Lewgoy, H. [5] ; Pashley, D. H. [6] ; Carrilho, M. R. [5]
Total Authors: 9
Affiliation:
[1] Univ Estadual Ponta Grossa, Dept Dent, Ponta Grossa, PR - Brazil
[2] Univ Estadual Campinas, Dent Mat Area, Dept Restorat Dent, Piracicaba Sch Dent, Piracicaba, SP - Brazil
[3] Univ Espirito Santo, Dept Prosthodont, Dent Mat Area, Sch Dent, Vitoria, ES - Brazil
[4] Coll Hlth & Agr Sci UNIME, Lauro De Freitas, BA - Brazil
[5] UNIBAN ANHANGUERA, Biomat Res Grp, Sao Paulo - Brazil
[6] Georgia Hlth Sci Univ, Dept Oral Biol, Coll Dent Med, Augusta, GA - USA
Total Affiliations: 6
Document type: Journal article
Source: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE; v. 23, n. 3, p. 629-638, MAR 2012.
Web of Science Citations: 13
Abstract

This study evaluated protocols to eliminate acetone from dental adhesives and their effect on the kinetic of water sorption and percent of conversion of these adhesives. Experimental methacrylate-based adhesives with increasing hydrophilicity (R2, R3, R5) were used as reference materials. Primer-like solutions were prepared by addition of 50 wt% acetone. Acetone elimination was measured gravimetrically before and after: a spontaneous evaporation, an application of air-drying at room temperature or application of 40 degrees C air-drying. Protocols were performed from 15 to 60 s. Specimens of adhesive/acetone mixtures were photo-activated and tested for degree of conversion, water sorption and solubility. Data were analyzed by ANOVA and Bonferroni's tests (alpha = 0.05). Complete acetone elimination was never achieved, but it was significantly greater after the 40 degrees C air-drying application. Higher acetone elimination was observed for the least hydrophilic adhesive. Longer periods for acetone evaporation and heated air-stream can optimize polymerization and reduce the water sorption/solubility of adhesive system models. (AU)