Permanent teeth refer to (usually) thirty-two adult teeth in a complete permanent dentition. It comprises of thirty-two teeth in the two dental arches: maxiallary (upper) teeth and mandibular (lower) teeth. The thirty-two teeth are comprised of twelve anterior or incisor (front) teeth eight bicuspid teeth (premolars) and twelve posterior or molar (back) teeth.
Permanent teeth start appearing approximately at the age of six where most children start losing their primary (baby) teeth. Around the age of twelve one loses all of their primary teeth and they are replaced by permanent teeth. Generally the first permanent tooth to appear are the central incisors and the last is the second molar (cuspid.)