Prevalence of Prevotella intermedia and Prevotella nigrescens in infected root canals from a Brazilian population.

Autor: Siqueira Júnior J; Department of Endodontics, School of Dentistry, Estácio de Sá University, Rio de Janeiro. siqueira@estacio.br, Rôças IN, Oliveira JC
Jazyk: angličtina
Zdroj: Australian endodontic journal : the journal of the Australian Society of Endodontology Inc [Aust Endod J] 2000 Dec; Vol. 26 (3), pp. 110-2.
DOI: 10.1111/j.1747-4477.2000.tb00293.x
Abstrakt: The purpose of the present study was to evaluate the prevalence of Prevotella intermedia and Prevotella nigrescens in symptomatic and asymptomatic endodontic infections from a Brazilian population. DNA extracted from samples obtained from 28 cases of endodontic infection were examined by the 16S rDNA-directed Polymerase Chain Reaction (PCR) method. PCR detected P. intermedia in 7.1% of the cases (2 out of 28 teeth) and P. nigrescens in only one sample (3.6%). The low prevalence of P. intermedia and P. nigrescens as reported in the present study is probably justified for geographical reasons.
Databáze: MEDLINE