51�Թ�

Factors identified included poor hygiene habits such as a lack of brushing and flossing, high levels of sugary sports and fizzy drink consumption, and stress - possibly due to a high-performance environment - which can cause teeth grinding and lead to decay.

Scientists also coaxed DNA from the centuries-old skeletons — drilling small samples of bones and teeth, grinding them up into powder, mixing them into a solution and filtering out everything but the human DNA.

He could feel “my jaw pulsing and my teeth grinding,” he wrote, as a voice prodded him to pull out his pistol and kill the man.

The last time we rode together I was in tears: sweating, having difficulty breathing, teeth grinding, and terrified about having an accident.

I couldn’t even ask Lusk about it because, even from my house on Cape Cod, Mass., I could hear his teeth grinding in Indiana.