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 Asymptomatic: supernumerary teeth may be detected incidentally on radiography for other reasons

 Supernumerary teeth are five times more common in the permanent dentition than in the deciduous dentition

 Supernumerary teeth may be single or multiple, unilateral or bilateral, and may be present in one or both jaws.

 The most common single supernumerary tooth: midline of the anterior maxilla, known as a mesiodens. This is also an example of microdontia

 Other supernumerary teeth: maxillary fourth molars, maxillary lateral incisors, mandibular fourth molars and mandibular premolars

 The most common site for multiple supernumerary teeth is the mandibular premolar region (Figure 1.2)Figure 1.2 Supernumerary premolars located lingual to the mandibular first and second premolars.

 A supernumerary tooth lingual or buccal to a molar is called a paramolar

 A supernumerary tooth located distal to a third molar is called a distomolar

 Supernumerary teeth are common in patients with cleidocranial dysplasia and Gardner syndrome

 Complications of supernumerary teeth may include:Delayed or ectopic eruption of adjacent teethRoot resorption of adjacent teethCrowdingMalocclusionDiastemaPericoronal cyst or infection