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

Materials Research

Fátima Namen²  João Galan Jr.¹  José Farias De Oliveira¹  Rodrigo Derossi Cabreira²  Fernando Costa E Silva Filho²  Alex Balduino Souza¹  Gustavo De Deus¹ 

[1] ,Universidade Federal do Rio de Janeiro Instituto de Biofísica Carlos Chagas Filho Rio de Janeiro RJ ,Brazil

关键词: dental polymers;    surface roughness;    surface hydrophobicity;    release of fluoride;   

DOI  :  10.1590/S1516-14392008000300002

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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