Document Detail

Scanning electron microscopy of bacteria in the apical part of root canals in permanent teeth with periapical lesions.
MedLine Citation:
PMID:  1810717     Owner:  NLM     Status:  MEDLINE    
The most apical 2 mm of the root canals of periapically diseased roots were examined for microorganisms by scanning electron microscopy (SEM). Bacteria in this area were observed in 10 out of 12 (83.3%) cases. The two remaining cases exhibited bacteria more coronally, with tissue remnants between the bacterial front and the apical foramen. Rod-shaped bacteria dominated, but filaments, spirochetes and cocci were also seen. Cocci and rods sometimes formed micro-colonies. Occasionally, cocci were seen attached to filaments forming "corn-cob"-like structures. Deposits resembling bacterial plaque were also found inside the root canal. SEM is useful for studying microbial topography of the apical root canal.
O Molven; I Olsen; K Kerekes
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Endodontics & dental traumatology     Volume:  7     ISSN:  0109-2502     ISO Abbreviation:  Endod Dent Traumatol     Publication Date:  1991 Oct 
Date Detail:
Created Date:  1992-06-04     Completed Date:  1992-06-04     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8508054     Medline TA:  Endod Dent Traumatol     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  226-9     Citation Subset:  D    
Department of Cardiology and Enodontics, School of Dentistry, University of Bergen, Norway.
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MeSH Terms
Bacteria / isolation & purification
Bacterial Infections / microbiology
Colony Count, Microbial
Dental Pulp Cavity / microbiology*,  ultrastructure
Microscopy, Electron, Scanning
Periapical Diseases / microbiology*
Tooth Root / microbiology*,  ultrastructure

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