%0 Journal Article
%T Avalia£¿£¿o in vitro da libera£¿£¿o e da recarga de fl¨²or em cimentos de ion£¿mero de vidro
%A Leite
%A Evelyn Lopez
%A Presotto
%A Nathielen Regina
%A Bassi
%A J¨²lio Cesar
%A Alves
%A Fabiana Bucholdz Teixeira
%A Wambier
%A Denise Stadler
%J Revista de Odontologia da UNESP
%D 2013
%I Scientific Electronic Library Online
%R 10.1590/S1807-25772013000100005
%X objective: this study evaluated the uptake of fluoride ions on glass ionomer cements of manipulation mechanical and manual by a unique fluoride topical application. methodology: the glass ionomer cements (gics) riva self cure£¿ (rsc-sdi) and ketac molar easymix£¿ (kme-3m-espe) were tested with a control material (rc-composite resin ice-sdi) after making ten specimens of each one (n = 30).these were weighed and stored in deionized water for measurements of fluoride release (specific electrode, orion 9606-bn) into two periods, before (pi: 1, 2, 7 and 14 days) and after topical application of fluoride (pii: 16, 17, 18, 20, 22, 24, 26, 28 and 30 days). on the 15th day, five specimens of each material (n = 15) were submitted to a topical application of sodium fluoride to 2% or placebo gel of natrosol (n = 15). result: the high release of fluoride for both gics occurred on the first day of the pi (kme = 13.44 ¡À 6.05; rsc = 6.88 ¡À 0.62) and the amount of fluoride released was similar for the pii (kme = 6.22 ¡À 0.80; rsc = 6.67 ¡À 1.63). the comparison between periods showed significant differences only for the kme with higher fluoride release in pi (p < 0.05) and no difference was detected between pi and pii (p > 0.05) for the rsc. the analysis of variance and the tukey test (p < 0.05) indicated no significant differences between the materials before and after recharging. conclusion: the gics of manipulation mechanical and manual have similar ability to uptake fluoride ions when subjected to a single topical application of sodium fluoride to 2%.
%K glass ionomer cements
%K fluoride
%K dental materials
%K sodium fluoride.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1807-25772013000100005&lng=en&nrm=iso&tlng=en