Surface properties of dental polymers: measurements of contact angles, roughness and fluoride release

AUTOR(ES)

Namen, Fátima, Galan Jr., João, Oliveira, José Farias de, Cabreira, Rodrigo Derossi, Costa e Silva Filho, Fernando, Souza, Alex Balduino, Deus, Gustavo de

FONTE

Materials Research

DATA DE PUBLICAÇÃO

2008-09

RESUMO

OBJECTIVE: Earlier studies on some dental materials measured roughness and/or contact angles or fluoride release separately. In the present study, five dental polymers were investigated to ascertain their contact angles, wettability, roughness, and fluoride release in dry or wet conditions. METHODS: Samples for 5 materials were prepared and stored dry or wet in deionized water pH 6.8. Samples were submitted to finishing/polishing procedures, and the measurements in Goniometer, roughness (µm) and fluoride analysis RESULTS AND CONCLUSIONS: Except for the Ariston pHc, all the materials displayed high contact angles when measured with water, showing hydrophobic characteristics. Roughness changed the contact angles, especially those of Ariston (α < 0.05). Fluoride did not modify the contact angles, but increased the roughness of the finished material.

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