title: Presence of bacteria in dentinal tubules.
abstract: This study demonstrated that a significant number of bacteria is present in the radicular dentinal tubules of periodontally diseased human teeth. Ten periodontally diseased teeth were prepared and stained by Brown and Brenn technique for histological examination. Bacteria were detected in all teeth. It is suggested that bacteria may invade dentinal tubules exposed to periodontal pocket and are very hard to be eliminated by conventional mechanical and chemical periodontal therapy. Contaminated dentinal tubules of periodontally diseased teeth can thus act as active bacterial reservoirs to promote recolonization of mechanically treated root surfaces, which could interfere with the periodontal healing and progression of the disease.
authors.affiliation: Division of Periodontics, Department of Surgery and Integrated Clinic, Dental School of Araçatuba, São Paulo State University, Araçatuba, SP, Brazil. kinajr@hotmail.com
authors.forename: José Ricardo
authors.initials: JR
authors.lastname: Kina
authors.forename: Juliana
authors.initials: J
authors.lastname: Kina
authors.forename: Eunice Fumico Umeda
authors.initials: EF
authors.lastname: Kina
authors.forename: Mônica
authors.initials: M
authors.lastname: Kina
authors.forename: Ana Maria Pires
authors.initials: AM
authors.lastname: Soubhia
mesh_terms: D001421:Bacteria, Anaerobic / Q000302:isolation & purification; D003804:Dentin / Q000382:microbiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010514:Periodontal Pocket / Q000382:microbiology*; D014092:Tooth Root / Q000382:microbiology*