A typical human being has 20 deciduous (or milk, primary) teeth, consisting of 4 incisors, 2 canines, and 2 molars in each jaw (upper and lower). This is followed by the permanent dentition (or secondary dentition), which consists of 4 incisors, 2 canines, 4 premolars, and 6 molars in each jaw, making up a total of 32teeth in a typical adult.
If a person has less than 20 deciduous teeth or 32 permanent teeth (not including those that has been extracted or those that are impacted), the condition is termed “hypodontia”, or “oligodontia”. If there is complete absence of teeth in one or both dentitions, it is called “anodontia”. Hypodontia is: Continue reading