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Quintessence Publishing: Journals: OHPD

 

Oral Health & Preventive Dentistry

Edited by Prof. Dr. Jean-François Roulet, Prof. Dr. Dr. Niklaus P. Lang, Prof. Dr. Palle Holmstrup

Official journal of the Academy of Minimally Invasive Dentistry, the World Congress of Microdentistry, and the European Society of Preventive Dentistry

ISSN (print) 1602-1622 • ISSN (online) 1757-9996

Publication:

Spring 2009
Volume 7 , Issue 1



Pages: 47-53
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Multi-species Biofilm Formation on Dental Materials and an Adhesive Patch

Dezelic, Tomislav / Guggenheim, Bernhard / Schmidlin, Patrick R.

Purpose: This laboratory study assessed the influence of surface roughness and contact time on the formation of a multi-species biofilm on dental materials (adhesive patch, composite, amalgam and enamel). Materials and Methods: Rough and smooth specimens of each material were prepared and the mean surface roughness was assessed profilometrically. The biofilms were then allowed to grow either for 15 min or 15 h respectively on salivapreconditioned specimens of each material, and colony-forming units on blood agar were counted (N = 9/group). Surface morphology was assessed using a scanning electron microscope. Results: No difference was found in the biofilm formation rate among all the materials that were tested. After a short incubation period, a statistical significant difference between smooth and rough samples could be detected on amalgam and on the resin composite material (P ≤ 0.001). Conclusions: Surface roughness may influence the initial biofilm adherence, but differences vanish following growth and maturation. The multi-species biofilm offers a reliable laboratory model for studying plaque formation.

Keywords: dental materials, multi-species biofilm, SEM, surface roughness

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