The Occurrence of Mottled Enamel on the Temporary Teeth**From the University of Arizona.

Smith, Margaret Cammack; Smith, H. V.

doi:10.14219/jada.archive.1935.0132

Cited by 10 publications

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“…It has been proposed also that the shorter time required for enamel formation in primary teeth can explaiti the difference in degree of dental fluorosis between the two dentitions (6,20,26). Studies of dental fluorosis in the permanent dentition suggest, however, that the degree of dental fluorosis within the individual is determined by enamel thickness while length of exposure to body fluids plays a minor role, if any (28).…”

Section: Discussionmentioning

confidence: 99%

“…To measure the agreement in distribution of dental fluorosis within the dentition among the children, Kendall's coefficient of concordance (W) was calculated in each area. W varies between O, meaning no agreement, and 1, perfect agreement (26). The coefficients calculated with respect to maxillary and mandibular canines, primary first and second molars from the right side were 0.48, 0.47 and 0.45 in the three areas, respectively.…”

Section: Tooth Distribution and Relation To Permanent Teethmentioning

confidence: 94%

“…Dental fluorosis in the primary dentition is generally reported as less severe compared to corresponding permanent teeth (14). This difference in severity has been explained either as a result of a placental barrier to fluoride (10,18) or by the shorter duration of enamel formation and maturation of primary teeth (18,20,26). No studies have quantitated, however, the distribution of dental fluorosis within the primary dentitioti and the relation between the severity observed in the two dentitions.…”

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Distribution of dental fluorosis in the primary dentition

Thylstrup¹

1978

Comm Dent Oral Epid

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By the use of a new classification system of dental fluorosis, primary and permanent teeth were examined in samples of children born in areas with 3.5, 6.0 and 21.0 parts/10(6) F- in the water supplies. The severity of dental fluorosis was lower than in the corresponding permanent teeth, but a significant increase in severity was noted with increasing concentration of fluoride in the drinking water. The distribution of dental fluorosis within the dentition followed the same pattern irrespective of fluoride content of the water. Thus, a progressive increase in severity was noted from the anterior to the posterior teeth. This pattern is presumably determined by variations in enamel thickness. The much thinner enamel layer of primary teeth may also explain the lower degree of dental fluorosis in these teeth rather than a maternal barrier to fluoride. The degree of dental fluorosis observed in medium and high fluoride areas did not support the hypothesis that the rapidly growing skeleton of infants prevents fluoride-derived enamel changes.

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Section: Discussionmentioning

confidence: 99%

Section: Tooth Distribution and Relation To Permanent Teethmentioning

confidence: 94%

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Distribution of dental fluorosis in the primary dentition

Thylstrup¹

1978

Comm Dent Oral Epid

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“…The occurrence of fluorosed deciduous teeth is well recognized as a clinical entity [Smith and Smith, 1935;Forsman, 1974;Thylstrup, 1978], The corresponding mi croscopic morphology has been studied by Thylstrup el al. [1978], These authors found slightly affected fluorosed deciduous enamel to show a widening of an inner, normallyoccurring, microporous zone.…”

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Morphology of Outer Regions of Fluorosed Human Deciduous Enamel

et al. 1980

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18 ground sections, one each from the same number of fluorosed human deciduous teeth, were screened by transmitted light microscopy for the presence of inhomogenous areas in the outer region of the enamel. Ground sections as well as broken surfaces from five of these teeth were then also studied by scanning electron microscopy, with and without in vitro etching. In unetched material, the results showed the anatomical surface of the teeth to be smooth, pitted or very rough. The latter types frequently showed irregular elevations above the surface plane. In the subsurface part, the inhomogenous regions displayed an outer area of a sintered texture with barely visible prismatic markings, but sometimes showing a layered appearance parallel to the anatomical surface. Deeper areas showed clearly identifiable, and sometimes markedly hollowed-out, prisms. The altered outer regions were, in comparison with nonaltered outer regions, found to be relatively resistant to in vitro acid etching. These observations are interpreted as mainly reflecting post-formative changes, linked with decalcification and recalcification, and they are briefly discussed in relation to caries susceptibility.

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“…Concentrations from 2 to 8 parts per million produce the more serious pitted-and-corroded types. The highest concentrations of F cause severe mottling of deciduous teeth (9). Differences in types of mottled enamel within a family and among users of the same water-supply are probably best explained by variation in the amount of water, and therefore of F, consumed during the period when calcification of the teeth is normally proceeding at the most rapid rate.…”

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Dietary Factors in Relation to Mottled Enamel

Smith

1935

J Dent Res

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The Occurrence of Mottled Enamel on the Temporary Teeth**From the University of Arizona.

Cited by 10 publications

References 0 publications

Distribution of dental fluorosis in the primary dentition

Distribution of dental fluorosis in the primary dentition

Morphology of Outer Regions of Fluorosed Human Deciduous Enamel

Dietary Factors in Relation to Mottled Enamel

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