Developmental Defects of Enamel - Historical and Present-Day Perspectives of Their Pathogenesis

Abstract

Developmental defects of enamel are visible deviations from the normal translucent appearance of tooth enamel resulting from enamel organ dysfunction. In the past, information about the activities of the ameloblasts has determined the terminology used to describe the lesions. Advances in our understanding of the complicated secretory and maturation phases of amelogenesis have required a re-appraisal of the concepts of defect formation. The phase of ameloblast activity, the duration of the disturbance, and its severity leading to temporary or permanent inactivity of the cells determine the appearance of the three common types of lesions--hypoplasia, and diffuse and demarcated opacities.

Perinatal factors associated with developmental defects of enamel in primary teeth: a case-control study

“…1 It may manifest clinically in the form of pits and grooves, or else a partial/total lack of surface enamel. 1,2 In the case of enamel opacities, the matrix is secreted to form a normal thickness, but parts fail to mature or mineralize properly, leaving regions with deficient mineral content, which appear as diffuse or demarcated opacities of yellowish or brown coloration. 4 The prevalence of DDE in the primary dentition ranges from 24.4% to 81.3% in different countries.…”

“…These defects are classified as either enamel hypoplasia or enamel opacities, based on clinical appearance. [1][2][3] Enamel hypoplasia is associated with a reduction in the thickness of the enamel in either a localized or a more widespread area, but the enamel matrix is mineralized normally. 1 It may manifest clinically in the form of pits and grooves, or else a partial/total lack of surface enamel.…”

“…[1][2][3] Enamel hypoplasia is associated with a reduction in the thickness of the enamel in either a localized or a more widespread area, but the enamel matrix is mineralized normally. 1 It may manifest clinically in the form of pits and grooves, or else a partial/total lack of surface enamel. 1,2 In the case of enamel opacities, the matrix is secreted to form a normal thickness, but parts fail to mature or mineralize properly, leaving regions with deficient mineral content, which appear as diffuse or demarcated opacities of yellowish or brown coloration.…”

Preventive dental work with children of preschool age / Preventivni stomatološki rad sa djecom predškolskog uzrasta

“…Rani karijes kod djece je veliki zdravstveni i javni problem posebno u zemljama u razvoju i tranziciji, gdje postoji i pothranjenost. Karijes zuba razvija se vrlo brzo kod predškolske djece, posebno na na zubnim površinama koje su sklone nastanku karijesa (1,2). Na nastanak i razvoj karijesa utiču socio-ekonomski faktori koji su van konteksta oralnog zdravlja (3).…”

Hipomineralização molar incisivo (MIH) : uma correlação de fatores possivelmente desencadeantes

“…Os defeitos de esmalte são definidos como distúrbios na formação e mineralização dos tecidos duros durante a odontogênese (21). As influências no desenvolvimento dentário podem afetar quantitativa e qualitativamente o desenvolvimento tanto do esmalte quanto da dentina (22,109 superfície lisa e espessura normal de esmalte (25,26). Nas hipoplasias, a falta de estrutura em alguma face dos dentes poderá ser observada.…”