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Updated: Jun 23, 2026
Oral Biofilm Formation on Different Materials for Dental Implants
Published on: June 24, 2018
Multi-species biofilm formation on dental materials and an adhesive patch
Tomislav Dezelic1, Bernhard Guggenheim, Patrick R Schmidlin
1Clinic for Preventive Dentistry, Periodontology and Cariology, Center for Dental Medicine, University of Zurich, Zurich, Switzerland.
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 saliva-preconditioned 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 < or = 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.
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