Cited by 132Oral microbiology and periodontitis researchBacterial biofilms and quorum sensingDental Health and Care Utilization

Physiological Approaches to the Control of Oral Biofilms

Marsh, Philip D., Bradshaw, David J.·1997·Advances in Dental Research

Abstract

Evidence that physiological strategies may be potential routes for oral biofilm control has come from (i) observations of the variations in the intra-oral distribution of members of the resident oral microflora, (ii) changes in plaque composition in health and disease, and (iii) data from laboratory model systems. Key physiological factors that were identified as significant in modulating the microflora included the local pH, redox potential (Eh), and nutrient availability. Increases in mutans streptococci and lactobacilli occur at sites with caries; growth of these species is selectively enhanced at low pH. In contrast, periodontal diseases are associated with plaque accumulation, followed by an inflammatory host response. The increases in Gram-negative, proteolytic, and obligately anaerobic bacteria reflect a low redox potential and a change in nutrient status due to the increased flow of gingival crevicular fluid (GCF). Consequently, physiological strategies for oral biofilm control should focus on reducing the frequency of low pH in plaque by (i) inhibiting acid production, (ii) using sugar substitutes, and (iii) promoting alkali generation from arginine or urea supplements. Similarly, strategies to make the pocket environment less favorable to periodontopathogens include (i) anti-inflammatory agents to reduce the flow of (and hence nutrient supply by) GCF, (ii) bacterial protease inhibitors, and (iii) redox agents to raise the Eh h locally. Most laboratory and clinical findings support the concept of physiological control. However, some data suggest that the ordered structure and metabolically interactive organization of mature dental plaque could generate a community with a high level of homeostasis that is relatively resistant to deliberate external manipulation.

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Crossref · 10.1177/08959374970110010901

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Authors
Marsh, P. D., & Bradshaw, D. J.
Affiliations
  • Leeds Dental Hospital (GB)
  • Centre for Applied Microbiology & Research Research Division Salisbury, SP4 OJG
Venue
Advances in Dental Research
Published
1997-04
Volume
11
Issue
1
Pages
176-185
ISSN
  • 0895-9374 (ISSN-L)
  • 1544-0737
OpenAlex
W2070541275
Cited by
132
References
56
Citations by year
2026: 2 · 2025: 3 · 2024: 2 · 2023: 2 · 2022: 4 · 2021: 6 · 2020: 2 · 2018: 3 · 2017: 9 · 2016: 4 · 2015: 5 · 2014: 10 · 2013: 6 · 2012: 3
FWCI
6.67
Type
journal article
Language
en
Open access
closed
Locations
  • Advances in Dental Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Dentistry › Periodontics › Oral microbiology and periodontitis research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bacterial biofilms and quorum sensing
  • Health Sciences › Dentistry › Periodontics › Dental Health and Care Utilization
Keywords
dental plaque, oral microbiota, mutans streptococci, lactobacilli, dental caries, periodontal disease, plaque pH, redox potential, gingival crevicular fluid, gingivitis, redox agents, artificial sweeteners, anti-inflammatory agents
MeSH terms
Animals, Bacteria, Dental Caries, Dental Plaque, Dietary Carbohydrates, Homeostasis, Humans, Hydrogen-Ion Concentration, Oxidation-Reduction, Periodontal Diseases, Sweetening Agents, Ecosystem, Biofilms

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