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Low temperature growth of thin film coatings for the surface modification of dental prostheses
- Source :
-
Surface & Coatings Technology . Feb2008, Vol. 202 Issue 11, p2477-2481. 5p. - Publication Year :
- 2008
-
Abstract
- Abstract: In this work we present some results about the low temperature, plasma-assisted growth of silicon–oxygen amorphous thin film alloys (a-SiO x ) on different types of dental materials used for the fabrication of dental prostheses. The a-SiO x films were grown at substrate temperatures lower than 70 °C by a PECVD deposition system using silane (SiH4) and nitrous oxide (N2O) as precursor gases. The chemical bonding structure of the films was investigated by Fourier transform infra-red spectroscopy (FTIR), while the morphological characteristics of the dental materials were analyzed before and after the coating deposition by means of high-resolution mechanical profilometry. The surface energy of dental materials was estimated before and after the coating process by contact angle measurements, revealing that the coating produced a considerable change of surface energy in all the tested samples, evidenced by a contact angle reduction from more than 90° to less than 10°. Some tests were also performed to estimate the effect of the coating on the bacterial adhesion properties, revealing that the a-SiO x coatings show some effectiveness in reducing the bacterial adhesion on the dental materials surface. [Copyright &y& Elsevier]
- Subjects :
- *BIOMEDICAL materials
*THIN films
*SURFACE coatings
*PLASTIC surgery
Subjects
Details
- Language :
- English
- ISSN :
- 02578972
- Volume :
- 202
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Surface & Coatings Technology
- Publication Type :
- Academic Journal
- Accession number :
- 29957540
- Full Text :
- https://doi.org/10.1016/j.surfcoat.2007.09.050