The Committee on the Status of Endangered Species, a federal advisory group, has created a list of 340 animals and plants that are in some jeopardy. Here are the categories the committee uses: Extinct  The species no longer exists in Canada.
The front teeth are called incisors, You have four incisors on the top jaw and bottom jaw. the central incisors (the front two teeth) the lateral incisors (the teeth on either side of the central incisors) they have multiple functions. your smile, having a full set of teeth will give you an even smilwe.
When a bone breaks or cracks, the injury is called a fracture. Jaw fractures are the third most common type of facial fractures, after fractures of the nose and cheekbone. They can be caused by many different types of impacts to the lower face, including: The jaw bone is also called the mandible.