Acid tolerance properties of dental biofilms in vivo
Open accessAbstract
BACKGROUND: The ecological plaque hypothesis explains caries development as the result of the enrichment of acid tolerant bacteria in dental biofilms in response to prolonged periods of low pH. Acid production by an acid tolerant microflora causes demineralisation of tooth enamel and thus, individuals with a greater proportion of acid tolerant bacteria would be expected to be more prone to caries development. Biofilm acid tolerance could therefore be a possible biomarker for caries prediction. However, little is known about the stability of biofilm acid tolerance over time in vivo or the distribution throughout the oral cavity. Therefore the aim of this study was to assess intra-individual differences in biofilm acid-tolerance between different tooth surfaces and inter-individual variation as well as stability of acid tolerance over time. RESULTS: The majority of the adolescents showed low scores for biofilm acid tolerance. In 14 of 20 individuals no differences were seen between the three tooth sites examined. In the remaining six, acid-tolerance at the premolar site differed from one of the other sites. At 51 of 60 tooth sites, acid-tolerance at baseline was unchanged after 1 month. However, acid tolerance values changed over a 1-year period in 50% of the individuals. CONCLUSIONS: Biofilm acid tolerance showed short-term stability and low variation between different sites in the same individual suggesting that the acid tolerance could be a promising biological biomarker candidate for caries prediction. Further evaluation is however needed and prospective clinical trials are called for to evaluate the diagnostic accuracy.
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Organisms involved in re-establishing pH homeostasis include S gordonii, S sanguinis, and Lactobacillus casei.
“Organisms involved in re‐establishing pH homeostasis include S gordonii, S sanguinis, and Lactobacillus casei.177”
From The oral microbiome: Role of key organisms and complex networks in oral health and disease (2021) · cites this paper as [177]
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- Authors
- Senneby, A., Davies, Jr., Svensäter, G., & Neilands, J.
- Affiliations
- Malmö University (SE)
- Corresponding author
- Neilands, J
- Venue
- BMC Microbiology
- Published
- 2017-07-25
- Volume
- 17
- Issue
- 1
- Pages
- 165-165
- ISSN
- 1471-2180 (ISSN-L)
- PMC
- PMC5525231
- OpenAlex
- W2738579118
- Cited by
- 54
- References
- 44
- Citations by year
- 2026: 7 · 2025: 6 · 2024: 3 · 2023: 8 · 2022: 10 · 2021: 10 · 2020: 5 · 2019: 3 · 2018: 2
- FWCI
- 3.77
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- cc-by
- Locations
- BMC Microbiology (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Diva portal (Dalarna University Library) (submittedVersion, other-oa)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Malmö University Publications (Malmö University) (submittedVersion)
- Funders
- Borrow Fundation (1060308)
- Topics
- Health Sciences › Dentistry › Periodontics › Oral microbiology and periodontitis research
- Health Sciences › Dentistry › Periodontics › Dental Health and Care Utilization
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bacterial biofilms and quorum sensing
- Keywords
- dental plaque, acid resistance, dental caries, enamel demineralization, interindividual variability, intra-individual stability, adolescents, oral microbiota
- MeSH terms
- Acids, Adolescent, Bacteria, Child, Dental Plaque, Female, Humans, Male, Mouth, Bacterial Physiological Phenomena, Biofilms
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