Dens
invaginatus is a developmental anomaly resulting from the invaginations of the
enamel organ into the dental papilla during the soft tissue stage of
development. As the hard tissues are formed, the invaginated enamel organ
produces a small tooth within the future pulp chamber. Dens invagination in a
human tooth was first described by a dentist named Socrates. The term “densinvaginatus” appears to be most appropriate, as it reflects the invagination of
the outer portion (enamel) into the inner portion (dentin) with the formation
of
a pocket or dead space, which generally occurs before crown calcification.
Although
the permanent maxillary lateral incisor is the most commonly involved tooth, it
may occur in primary teeth as well as in the maxillary and mandibular arches.
In most cases, it appears to simply represent an accentuation in the development
of a lingual pit. The reported prevalence of adult teeth affected with dens
invaginatus is between 0.3% and 10% with the problem observed in 0.25% to 26.1%
of individuals examined. The etiology of dens invaginatus is still unclear.
Kronfeld suggested that dens invaginatus is caused by a focal failure growth of
the internal enamel epithelium. Read more>>>>>>>>>>>>>>>
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