Primary triple teeth: histological and CT morphological study of two case reports

The macromorphology and micromorphology of two specimens of primary triple teeth using histo-logical and CT analysis approach is analyzed. A single morphological pattern of triple teeth has been found and described: three nearly separate crowns with three separate pulp chambers, and three joined roots with three connected root canals. The characteristic triple teeth appearance occurred because a labial supernumerary tooth is the junction element between two teeth of normal series: the central incisor on the mesial side and the lateral incisor on the distal side. Primary triple teeth suggest an idio-phatic abnormality in the distribution of the dental material originated very soon in the dental devel-opment. They can be considered as an early double fusion between three tooth germs, initially separate but in close proximity and developing synchronically.

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