Enamel hypoplasia in the primary dentition: a review

This paper provides a critical review of the current concepts of the etiological factors involved in the pathogenesis of this significant clinical entity in the primary dentition. As in the permanent dentition, enamel hypoplasia in the primary dentition may be inherited as genetic diseases involving only the teeth, such as amelogenesis imperfecta, or as oral manifestations of many inherited systemic diseases and dysmorphic syndromes. More commonly, however, enamel hypoplasia in primary teeth results from acquired environmental factors encountered during the period of enamel formation