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Ancient teeth bacteria record disease evolution
Date:2/17/2013

ears ago. With the introduction of processed sugar and flour in the Industrial Revolution, we can see a dramatically decreased diversity in our oral bacteria, allowing domination by caries-causing strains. The modern mouth basically exists in a permanent disease state."

Professor Cooper has been working on the project with archaeologist and co-Leader Professor Keith Dobney, now at the University of Aberdeen, for the past 17 years. Professor Dobney says: "I had shown tartar deposits commonly found on ancient teeth were dense masses of solid calcified bacteria and food, but couldn't identify the species of bacteria. Ancient DNA was the obvious answer."

However, the team was not able to sufficiently control background levels of bacterial contamination until 2007 when ACAD's ultra-clean laboratories and strict decontamination and authentication protocols became available. The research team is now expanding its studies through time, and around the world, including other species such as Neandertals.


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Contact: Professor Alan Cooper
alan.cooper@adelaide.edu.au
61-406-383-884
University of Adelaide
Source:Eurekalert

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