How Our Ancestors Drilled Rotten Teeth
It has been rare to come across an early human fossil with a dental cavity. However, a primitive looking skull found at Kabwe in Zambia back in 1921 was found to have cavities in ten of its teeth. It is thought that this adult may have died due to bad oral health.
Tooth decay is not entirely absent from pre-agricultural societies, but it’s very rare. The frequency of dental caries (cavities) among hunter-gatherers was approximately 1-5 percent and around 6-8 percent among people who practised mixed subsistence.
Humans learnt how to drill rotten teeth with the aim of relieving pain associated with tooth decay. It is therefore thought that the dental drill was invented before civilization, writing and even predates the invention of the wheel.
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