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The International Journal of Prosthodontics

Edited by George A. Zarb, BChD, DDS, MS, MS, FRCD(C)

ISSN 0893-2174

July/August 2007
Volume 20 , Issue 4

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SEM Evaluation of In Situ Early Bacterial Colonization on a Y-TZP Ceramic: A Pilot Study

Roberto Scotti, MD, DDS / Karla Z. Kantorski, DDS, MSc, PhD / Carlo Monaco, DDS, PhD / Luiz Felipe Valandro, DDS, MS, PhD / Leonardo Ciocca, DDS, PhD / Marco A. Bottino, DDS, PhD

Pages: 419422
PMID: 17695877

This study aimed to evaluate the effect of surface glazing and polishing of yttrium-stabilized tetragonal zirconia polycrystal ceramic on early dental biofilm formation, as well as the effect of brushing on the removal of adhered bacteria. Two subjects used oral appliances with polished and glazed samples fixed to the right and left sides. After 20 minutes, 1 hour, and 6 hours, the subjects manually brushed the samples on the right side. The samples were analyzed using scanning electron microscopy. Granular material was verified on the samples, especially on irregular surfaces. After 1 hour, there was no significant difference between glazed and polished surfaces in terms of bacterial presence. However, glazed surfaces tended to accumulate more biofilm, and brushing did not completely remove the biofilm. Polished surfaces seem to present a lower tendency for biofilm formation. Int J Prosthodont 2007;20:419422.

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