Each (approximately) 32 teeth have five surfaces, each with its own direction name. These surfaces are:
Occlusion - The chewing surface of a tooth.
Near middle - front of the tooth. The middle part of the teeth is located between the "surfaces" of the teeth.
Distal - The back of the tooth.
Oral - The cheeks of the teeth. When an anterior tooth is involved, this surface is also called a facial surface.
Language - The part closest to the tongue. This part of the teeth is also called the lip.
The middle part of the tooth usually touches the distal end of the tooth next to it. On your back teeth, it hides in the narrow space of your dental floss. The near-middle and distal surfaces can be thought of as the side sashes of the teeth, while the cheek and tongue surfaces can be considered as the windows themselves. According to the American Dental Association, the medial side can also be interpreted as facing the side of your teeth's midline under your nose.
