Document Detail

A scanning electron-microscopic study of developing human deciduous enamel on the dependence of the outline of surface pits on the angle of observation.
MedLine Citation:
PMID:  9602289     Owner:  NLM     Status:  MEDLINE    
On the developing enamel surfaces of fetal human deciduous teeth, many of the surface pits were arcade-shaped with the arcade preferentially pointing in a cervical direction. The configuration of the interprism ridges between the pits contributed to this appearance. Surface cracks allowed verification of an incisal inclination of the subsurface prisms. This apparent paradox was solved when the specimens were tilted so that the pits were viewed in the directions of the prisms, giving the pits a compressed arcade-shape with the arcades pointing incisally. It is recommended that care should be exercised and due attention paid to the angle of observation when determining the orientation of pit arcades. Pit entry direction seems to be a more reliable feature for inferring the direction of tangential ameloblast movement.
S Risnes; R J Radlanski; H Renz
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Archives of oral biology     Volume:  43     ISSN:  0003-9969     ISO Abbreviation:  Arch. Oral Biol.     Publication Date:  1998 Feb 
Date Detail:
Created Date:  1998-08-25     Completed Date:  1998-08-25     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0116711     Medline TA:  Arch Oral Biol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  111-5     Citation Subset:  D; IM    
Department of Oral Biology, Faculty of Dentistry, University of Oslo, Norway.
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MeSH Terms
Ameloblasts / cytology
Cell Movement
Dental Enamel / embryology*,  ultrastructure
Microscopy, Electron, Scanning
Reproducibility of Results
Tooth Cervix / embryology,  ultrastructure
Tooth Crown / embryology,  ultrastructure
Tooth Germ / embryology*,  ultrastructure
Tooth, Deciduous / embryology*,  ultrastructure

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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