Researchers say the tenaculum helps males grasp females during reproduction, acting like the mouth full of teeth that other ...

Ghost sharks have evolved rows of true teeth on a bizarre forehead rod used for mating. Fossil and genetic evidence revealed ...

Medically reviewed by Edmund Khoo, DDS Key Takeaways Cavities are caused by bacteria, acids, and carbohydrates that linger in ...

Male "ghost sharks"—eerie deep-sea fish known as chimaeras that are related to sharks and rays—have a strange rod jutting ...

“Everybody brushes their teeth, but you probably learned how from your parents, and in the end nobody really learns it right, ...

Diastema is a gap between your teeth. This can happen between any of your teeth. Because of its position, it’s most noticeable when there’s a gap between your upper front teeth. Size, shape ...

Climate change is making ocean water more acidic. A new study suggests that a drop in pH could erode sharks’ teeth.

For four straight years, I have been telling the children of Zone 1 that giraffes — as strange as it seems — don't have upper teeth. Then on Saturday a little boy named Adrian challenged me ...

Jethwa says a "youthful smile" is one where the upper teeth are more prominent than the lower set. iStock / Getty Images Plus Teeth whitening is an extremely effective way at making teeth look ...

You should be sceptical about this particular baby upper teeth first myth. While teething powders and gels could help alleviate some of the discomforts, you should be careful.

A 4,500-year-old grave in the Mexican state of Michoacan has revealed a macabre example of ancient dentistry -- the skull of a young man whose upper teeth had been modified to accept a denture ...

An unusual new species of pterosaur has been identified, which had over 400 teeth that looked like the prongs of a nit comb. Paleontologists at the University of Bonn (Germany) have succeeded in ...