When did an uptick in dental cavities in humans begin?
Researchers have recovered remarkably preserved microbiomes from two teeth dating back 4,000 years, found in an Irish limestone cave. Genetic analyses of these microbiomes reveal major changes in the oral microenvironment from the Bronze Age to today. The authors identified several bacteria linked to gum disease and provided the first high-quality ancient genome of Streptococcus mutans, the…
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