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.
Each tooth consists of three main parts - the crown, the neck and root. 1  The crown is the visible part of the tooth. 2  The neck is the area of the tooth between the crown and the root. 3  The root is the portion of the tooth that extends through the gum and into the bone of the jaw.