Clinical Report: A Microbial Time Capsule in Dental Plaque
Overview
A study analyzed dental calculus from 118 historical Japanese individuals, revealing significant differences in oral microbial composition between ancient and modern populations. The prevalence of Methanobrevibacter oralis, linked to periodontitis, was higher in historical samples.
Background
This study highlights how historical dental calculus can provide data on microbial diversity and changes over time.
Data Highlights
| Finding | Details |
|---|---|
| Microbial Species Identified | 285 oral microbial species |
| Increased Prevalence | Methanobrevibacter oralis in historical samples |
| Regional Variation | Differences in microbial prevalence between mainland Japan and Okinawa |
| Phylogenetic Analysis | Distinct lineages associated with historical periods |
| Clade Membership | Associated with host sex and practices like ohaguro |
Key Findings
- 285 oral microbial species were identified in the study.
- Methanobrevibacter oralis was more prevalent in historical samples.
- Regional differences in microbial composition were noted between mainland Japan and Okinawa.
- Distinct microbial lineages were associated with different historical periods.
- Clade membership of M. oralis was linked to host sex and cultural practices.
Clinical Implications
The findings suggest that historical dietary and lifestyle factors may have influenced oral microbial evolution. Understanding these changes can provide context for current oral health challenges and inform future research on microbial management in periodontal disease.
Conclusion
This study highlights the importance of historical dental calculus in understanding the evolution of oral microbiomes.
Related Resources & Content
- Insights into demographic and cultural influences on the oral microbiome from historical Japanese dental calculus, Scientific Reports, 2026 -- A Microbial Time Capsule in Dental Plaque
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- Journal of the American Dental Association — Imaging the past: Dental pathologies and cardiovascular disease in Egyptian mummified remains
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- Clinical guidelines - European Federation of Periodontology
- Consensus Report of the 20th European Workshop on Periodontology: Contemporary and Emerging Technologies in Periodontal Diagnosis - Herrera - 2025 - Journal of Clinical Periodontology - Wiley Online Library
- The Oral Microbiome Testing – BSP statement
- Evidence-Based Clinical Practice Guideline on Antibiotic Use for the Urgent
- Hub - Periodontal Disease and Atherosclerotic Cardiovascular Disease - Professional Heart Daily | American Heart Association
- Association between periodontitis and non-alcoholic fatty liver disease in community-dwelling adults: a systematic review and meta-analysis | Scientific Reports
- Frontiers | Effect of periodontal therapy on the oral microbiome and lung function: an intervention study
- Insights into demographic and cultural influences on the oral microbiome from historical Japanese dental calculus | Scientific Reports
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