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Journal of Dental Research
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A Histological Study of the Exfoliation of Human Deciduous Teeth

N. Sahara

Department of Oral Histology

N. Okafuji

Department of Orthodontics, Matsumoto Dental College, Shiojiri, Nagano, 399-07, Japan

A. Toyoki

Department of Orthodontics, Matsumoto Dental College, Shiojiri, Nagano, 399-07, Japan

Y. Ashizawa

Department of Orthodontics, Matsumoto Dental College, Shiojiri, Nagano, 399-07, Japan

H. Yagasaki

Department of Oral Histology

T. Deguchi

Department of Orthodontics, Matsumoto Dental College, Shiojiri, Nagano, 399-07, Japan

K. Suzuki

Department of Oral Histology

For clarification of the histological details of the shedding of human deciduous teeth, exfoliated and extracted deciduous teeth were examined by light and electron microscopy. After the roots were completely resorbed, the dento-gingival junction migrated along the inner resorbing surface and finally reached the pulpal surface of the crown. At the same time, the gingival epithelium also proliferated and migrated under the crown of the deciduous tooth in such a way that part of it lined the residue of the pulp and another part lined the surface overlying the erupting successional tooth.

This phenomenon took place from various sides of the tooth surface. Therefore, just before exfoliation, the migrated gingival epithelium formed narrow necks of tissue, and the crown was only superficially attached to the gingiva by them. The final shedding of the tooth appeared to occur by a tearing of these narrow tissue regions. The results of the present study suggest that the dento-gingival junction as well as gingival epithelium play important roles in the process of exfoliation of human deciduous teeth.

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  • Sahara N., Okafuji N., Toyoki A., Suzuki I., Deguchi T., Suzuki K.( 1992). Odontoclastic resorption at the pulpal surface of coronal dentin prior to shedding of human deciduous teeth. Arch Histol Cytol 55:273-285.[CrossRef][Medline] [Order article via Infotrieve]
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Journal of Dental Research, Vol. 72, No. 3, 634-640 (1993)
DOI: 10.1177/00220345930720031401
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This Article
Right arrow Abstract Freely available
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to Saved Citations
Right arrow Download to citation manager
Right arrowRequest Permissions
Right arrow Request Reprints
Right arrow Add to My Marked Citations
Citing Articles
Right arrow Citing Articles via Google Scholar
Right arrow Citing Articles via Scopus
Google Scholar
Right arrow Articles by Sahara, N.
Right arrow Articles by Suzuki, K.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Sahara, N.
Right arrow Articles by Suzuki, K.
Social Bookmarking
Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati   Add to Twitter  
What's this?