Abstract
Supernumerary premolars have been reported to occur in 0.29% of the general population and to represent about 9.1% of all supernumerary teeth. Most of the supernumerary teeth reported in the literature were detected by radiographsas most of them were unerupted or impacted.A search of the literature revealed not many cases of fully erupted and well aligned supernumerary premolars being reported. A case of a unilateral transposed supernumery premolar that had erupted into alignment is presented here. The remarkable feature of this case is that the supernumery premolar is transposed between the first and second permanent maxillary molars. The etiology of supernumerary teeth is also reviewed.
Highlights
Supernumerary teeth have been found in all of the toothbearing areas of the dental arches and may occur in the primary or permanent dentition(l)
Not many reports on erupted supernumerary premolars in occlusion or in alignment could be found in the literature(13·14.15.16)
Supernumerary premolars, especially in the maxillas, are unusual occurrences and third premolars which erupt without undue disturbance of the dental arch alignment are very rare
Summary
Supernumerary teeth have been found in all of the toothbearing areas of the dental arches and may occur in the primary or permanent dentition(l). Address of correspondence: Wei Cheong Ngeow, Faculty of Dentistry, University of Malaya, 59100, Kuala Lumpur, Malaysia. Not many reports on erupted supernumerary premolars in occlusion or in alignment could be found in the literature(13·14.15.16).
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