Dental cavities, which lead to the progressive destruction of the tooth, are an infectious disease that always develops from the outside in. If left untreated, they can reach the dentin, a layer ...
Wisdom teeth often first appear in young adults between the ages of 17 to 21. They are also called third molars. Because most mouths are too small for 4 more teeth, wisdom teeth often need to be ...
Scientists have discovered the oldest known animal with saber teeth: a predator that lived 270 million years ago. This animal, from before the age of the dinosaurs, was a dog-like creature that was ...