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- Norén, Jörgen G, 1947, et al.
(författare)
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Congenital hypothyroidism and changes in the enamel of deciduous teeth.
- 1983
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Ingår i: Acta paediatrica Scandinavica. - 0001-656X. ; 72:4, s. 485-9
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Tidskriftsartikel (refereegranskat)abstract
- Deciduous teeth from children with congenital hypothyroidism were collected and ground sections were prepared. The sections were analysed by means of polarized light and microradiography. The enamel in ground sections of deciduous teeth from children with congenital hypothyroidism showed an increase in areas with elevated pore volume distribution in both the pre- and postnatal enamel. The findings suggest that thyroid hormone influences enamel maturation. Further, alterations in enamel structure, presumably due to prenatal thyroid deficiency, were found to be more common among children with neurological abnormalities at the age of 7 to 9 years.
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| 2. |
- Norén, Jörgen G, 1947
(författare)
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Enamel structure in deciduous teeth from low-birth-weight infants.
- 1983
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Ingår i: Acta odontologica Scandinavica. - 0001-6357. ; 41:6, s. 355-62
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Tidskriftsartikel (refereegranskat)abstract
- Ground sections of deciduous teeth from 64 infants with birth weights below 2000 g and from 43 healthy full-term infants were examined in polarized light and by microradiography. The deciduous enamel displayed various changes, which were more frequent and pronounced in the low-birth-weight group. The main findings were diffuse areas of increased porosity and distinct subsurface lesions in the postnatal enamel. Five teeth with enamel hypoplasia from the low-birth-weight group were also examined. The hypoplasias were all located along the neonatal line. The postnatal enamel seemed to be more susceptible to disturbances in the mineralization than the prenatal enamel. The subsurface lesions showed an arrest in the very late stages of enamel maturation, which frequently occurred in the cervical deciduous enamel. Enamel hypoplasia is considered to be a result of severe neonatal hypocalcemia.
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