Journal of Oral Science
Online ISSN : 1880-4926
Print ISSN : 1343-4934
ISSN-L : 1343-4934
Histological and analytical studies of a tooth in a patient with cleidocranial dysostosis
Yohko FukutaMorio TotsukaYoshiyasu FukutaYasunori TakedaYasuo YoshidaJiro NiitsuHirotsugu Yamamoto
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2001 年 43 巻 2 号 p. 85-89

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A histopathological and analytical study of a permanent tooth from a patient with cleidocranial dysostosis (CCD) was performed. The patient was a 47-year-old woman, who had 10 erupted permanent teeth and 2 partially erupted and 19 completely impacted teeth, including supernumerary teeth. The erupted right upper premolar was extracted and observed using a light microscope and an electron probe X-ray microanalyzer (EPMA). Findings showed enamel hypoplasia, predominantly irregular globular dentin and Tomes' granular layer, and a complete lack of cellular cementum in the ground section. The incremental von Ebner and counter Owen lines were obscure. Comparative quantitative analysis using the EPMA showed that the quantities of calcium and phosphate were lower in the enamel and dentin than those of the control sample. (J. Oral Sci. 43, 85-89, 2001)

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