Insectivores have teeth that are square with sharp points that are perfect for tearing up insect bodies.

Herbivores do not have upper incisors because they cut the plants with their lips instead.

Sharks have at least 40 sets of teeth in their life time.

A Chinese dentist once built a tower out of 28,000 human teeth.

The bristles of toothbrushes were originally made from the hair of hogs and cows.

Mammals have two types of teeth, the primary teeth and the permanent teeth.

The hardest thing in your body is the enamel on your teeth.

George Washington did not have teeth made out of wood, but he did have teeth made out if hippopotamus teeth. He also had teeth made out of ivory, lead, human teeth, and cow and sheep's teeth.

A cat’s tongue is covered with papillae, rigid backward-facing spines, that act like a hairbrush when a cat grooms himself.

Kittens are born with 26 teeth, which fall out and are replaced with 30 adult teeth sometime between 3 and 4 months of age

Halitosis or bad breath can be caused by smoking, dental problems or diseases of the mouth, gums or tongue

A smooth tongue can be a sign of a vitamin deficiency or anemia

.

Black tongues can be caused by smoking, chewing tobacco or lack of proper oral care

White or grey patches inside the mouth can be a sign of thrush, excess smoking and drinking, or excess cell growths

Dry chapped lips can be caused by cold weather or nutritional deficiencies

Dry chapped lips can be caused by cold weather or nutritional deficiencies

Read more at Suite101: Strange Facts About Mouths, Lips and Their Health Problems | Suite101 http://suite101.com/article/strange-facts-about-mouths-lips-and-their-health-problems-a268504#ixzz2IFr6GJj8
Follow us: @suite101 on Twitter | Suite101 on Facebook

Sarcoidosis is a serious inflammatory disorder that can cause cracked, scaly lips

Puffy, swollen lips can be a sign of an allergic reaction

The crocodile bird flies into the open mouth of a crocodile and cleans its teeth for it - such friends!

It takes food seven seconds to go from the mouth to the stomach

Humans develop around 37,854 litres of saliva in their life time