Resumo

GOES, Mario Fernando de; MARTINS, Adriano Luis; SARTORII, Cristiana Godoy  e  SINHORETI, Mario Alexandre Coelho. Solubility of Glass Ionomer Cements Indicated for Atraumatic Restorative Treatment. Rev. Assoc. Paul. Cir. Dent. [online]. 2015, vol.69, n.3, pp. 272-278. ISSN 0004-5276.

This study evaluated and compared the solubility of four commercially available glass ionomer cements indicated for Atraumatic Restorarative Treatment (ART), after immersion in acid and water environments. Eight specimens for each brand were obtained using a plastic ring mold with dimensions specified by ISO 7849. Two specimens of the same material were suspended by a platinum wire inside weighing bottles containing 50 mL of water or a lactate buffer solution (pH=2.74) prepared according to ISO 9917. Simultaneously, a clean weighing bottle with either lactate buffer or distilled water was used as a blank estimation for each specimen pair. The weighing bottles were stored at 37oC for 23 hours. The leachable content of each specimen pair in acid or water was calculated as a percentage by mass, according to ISO 7849. Ketac Molar Easymix revealed the statistically lowest solubility in acid (8.70%) and neutral water environments (0.06%) compared to Vitro Molar (12.17% and 0.10%), Vidrion R (13.29% and 0.26%) and Maxxion R (30.07% e 1.85%). All glass ionomer cements showed statically higher solubility in acid compared to water. Ketac Easy Mix cement presented the lowest solubility in both environments.

Palavras-chave : dental materials; physical and chemical properties; dental enamel solubility.