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Ultrastructural examination of failed molar retreatment with secondary apical periodontitis: an examination of endodontic biofilms in an endodontic retreatment failure.
Carr, Gary B; Schwartz, Richard S; Schaudinn, Christoph; Gorur, Amita; Costerton, J William.
Affiliation
  • Carr GB; Pacific Endodontic Research Foundation, San Diego, CA 92121, USA. gary@tdo4endo.com
J Endod ; 35(9): 1303-9, 2009 Sep.
Article in En | MEDLINE | ID: mdl-19720237
A light and electron microscope examination of the resected root tip of a failing endodontically re-treated lower molar was examined. The tooth had been initially treated 10 years ago and then re-treated 2 years ago. The resected root tip was sectioned axially, and thin sections were examined through the entire length of the specimen. Thin sections were examined with a transmission electron microscope. The thin sections were randomly chosen along the isthmus areas between the mesiobuccal and mesiolingual canals. Our findings suggest that a complex, variable, multispecies biofilm was present the entire length of the specimen.
Subject(s)

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Periapical Periodontitis / Root Canal Therapy / Biofilms / Dental Restoration Failure Limits: Adult / Female / Humans Language: En Journal: J Endod Year: 2009 Document type: Article Affiliation country: United States Country of publication: United States

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Periapical Periodontitis / Root Canal Therapy / Biofilms / Dental Restoration Failure Limits: Adult / Female / Humans Language: En Journal: J Endod Year: 2009 Document type: Article Affiliation country: United States Country of publication: United States