Distribution of prevotella nigrescens in subgingival plaques of patients with adult periodontitis
Abstract：AIM：To investigate the role of Prevotella nigrescens (P.nigrescens) in etiology of adult periodontitis. METHODS: Subgingival plaques were collected from 64 adult patients with periodontitis and cultivated under anaerobic conditions for isolation of black-pigmented colonies, from which P.nigrescens strains were identified with Polymerase Chain Reaction assay. RESULTS: From 614 strains of black-pigmented anaerobic rods isolated, 49 were identified as P.nigrescens, which was found to be 14.8% and 9.4% positive in diseased and healthy sites respectively, without statistically significant difference. 26 strains from diseased sites and 23 strains from healthy sites of P.nigrescens were detected, which were 6.9% and 9.7% of the total black-pigmented anaerobic rods respectively. CONCLUSION: Our results support that the P. nigrescens is part of normal oral flora, not periodontal pathogen.
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Publication Date：2001-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 166-168 )