Canine tooth

Types of teeth, including canines.

A canine tooth is a type of tooth found in mammals, including humans, dogs, and other carnivores. These teeth are characterized by their pointed shape and are primarily used for gripping and tearing food. In humans, they are located between the incisors and premolars.

Anatomy and Function

Diagram showing the position of canine teeth in the human mouth.

Canine teeth are typically longer and more pointed than other types of teeth. They have a single pointed cusp and a long root, which makes them very stable and strong. This structure allows them to effectively tear and hold onto food, which is particularly useful for carnivorous animals.

In humans, there are four canine teeth, two in the upper jaw (maxillary canines) and two in the lower jaw (mandibular canines). They are the third tooth from the midline in each quadrant of the mouth.

Development

Canine teeth develop after the incisors and before the premolars. In humans, the primary (baby) canines typically erupt between 16 to 23 months of age, while the permanent canines appear between 9 to 12 years of age.

Variations in Other Species

File:Azawakh K9.jpg

Canine tooth of an Azawakh.

In many carnivorous animals, such as dogs and cats, the canine teeth are highly developed and are used for hunting and defense. In some species, such as the walrus, the canine teeth have evolved into tusks.

File:Hydropotes inermis male - cropped image.png

Canine tooth of a Hydropotes inermis male.

In herbivores, the canine teeth may be reduced or absent, as they are not needed for processing plant material. However, some herbivores, like the musk deer, have elongated canines that are used for display and fighting.

Clinical Significance

Canine teeth play a crucial role in the alignment and function of the dental arch. They help guide the teeth into proper occlusion and are important for maintaining the shape of the face. Loss or damage to canine teeth can affect chewing, speech, and aesthetics.

Related Pages

• Tooth
• Incisor
• Premolar
• Molar
• Dental anatomy