Dynamic contact angle and spreading rate measurements for the characterization of the effect of dentin surface treatments
| Autor: | José Arturo Aguilar, Miguel A. Rodríguez-Valverde, H. A. Wege, Manuel Toledano, Raquel Osorio, M.A. Cabrerizo-Vílchez |
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| Rok vydání: | 2003 |
| Předmět: |
Analysis of Variance
Time Factors Materials science Acid etching Drop (liquid) Mineralogy Surfaces Coatings and Films Electronic Optical and Magnetic Materials Grinding Dynamic contact Biomaterials Contact angle stomatognathic diseases Colloid and Surface Chemistry medicine.anatomical_structure Acid Etching Dental stomatognathic system Dentin Microscopy Microscopy Electron Scanning medicine Wetting Composite material Algorithms |
| Zdroj: | Journal of Colloid and Interface Science. 263:162-169 |
| ISSN: | 0021-9797 |
| Popis: | A new methodology capable of providing reliable and reproducible contact angle (theta) data has been employed to study the effect of clinical treatments grinding, acid etching, and deproteinization on medial dentin tissue. It is based on the application of the ADSA-CD algorithm to the determination of low-rate dynamic contact angles, obtained from slowly growing drops, and on contact angle measurement, as well as spreading behavior analysis, during the relaxation of the system (water on treated dentin) after initial drop growth. The theta data obtained were substantially more reproducible than those obtained with classical methods. A net effect of the treatment on theta was found, increasing dentin wettability: theta (polished) >theta (etched) >theta (deproteinized). The spreading rates correlate with the angles and are adequate for the dentin surface characterization. ANOVA and SNK tests show that for advancing contact angles the means corresponding to all treatments are significantly different. In the relaxing phase, mean angle and spreading rates on polished dentin differ significantly from those on etched and deproteinized dentin, but the latter do not differ significantly from each other. |
| Databáze: | OpenAIRE |
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