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Human dental plaque formation on plastic films. A quantitative SEM study
M Brecx1, M Winkler, L Netuschil
1Department of Conservative Dentistry, School of Dental Medicine, University of Tübingen, Germany.
The Journal of the Western Society of Periodontology/Periodontal Abstracts
|January 1, 1994
Summary
Bacterial colonization on teeth begins rapidly after cleaning, with microorganisms present within minutes and increasing over four hours. This study observed the earliest stages of human dental plaque formation in situ.
Area of Science:
- Oral microbiology
- Dental biofilm formation
Background:
- Bacterial colonization on oral surfaces occurs at varying times post-cleaning.
- Previous studies show bacteria present within seconds to minutes after prophylaxis.
- Bacterial numbers increase significantly within four hours.
Purpose of the Study:
- To determine the earliest occurrence of bacterial colonization in situ.
- To observe the pattern of initial human dental plaque formation.
Main Methods:
- Utilized light microscopy and bacterial culture techniques.
- Investigated bacterial presence on tooth surfaces at different time points.
- Examined plaque development on both smooth and rough surfaces.
Main Results:
- Bacteria were observed as early as 10 seconds post-prophylaxis via light microscopy.
- Bacterial culture confirmed microorganisms within minutes on tooth surfaces.
- Microbial numbers increased over a four-hour period.
- Ultrastructural analysis showed colonization within two hours on rough surfaces, less consistently on smooth surfaces.
Conclusions:
- Bacterial colonization initiates very rapidly after oral prophylaxis.
- Dental plaque formation is a dynamic process occurring within hours.
- Understanding early colonization is key to preventing dental biofilm accumulation.