Back Teeth – are the posterior teeth. They consist of bicuspids and molars:
- Premolars: Also known as bicuspids, there are four in the upper arch and four in the lower arch. They function with the molars in the mastication of food and in maintaining the vertical dimension.
- Molars: There are six upper and six lower molars, designated as first, second, or third molars. Permanent molars are important in the chewing and grinding of food, and in maintaining the vertical dimension. It is important to know that upper molars have three roots and lower molars have two roots.
Bicuspids or Premolars
The first and second bicuspids are the fourth and fifth teeth from the center of the mouth, respectively. These back teeth are used for chewing.
There are four in the upper and four in the lower arch. They are designated as first or second bicuspids within their order in the dental arch. They function like molars in the mastication of food and in part maintaining the vertical dimension of the dental arch.