Relationship between the presence or absence of gingival bleeding and the enzymatic BANA test.

When periodontal disease started to be considered a bacterial infection mainly mediated by subgingival plaque, the basic problem faced by periodontists was the identification and/or quantification of periodontopathogenic bacteria. However, clinical methods continue to be of great value for the diagnosis of periodontal disease. In the present study we show a significant correlation between an index widely used in clinical practice, the Gingival Index of Löe (1967), based on the presence or absence of bleeding on probing, and the methodology of the BANA test for the detection of the specific enzymatic activity of microorganisms involved in periodontal disease. More sensitive and specific clinical parameters, taken together with other microbiologic methods, will be useful in daily clinical practice even before periodontal treatment.

[Rhabditis (Rhabditis) freitasi sp.n. and Rhabditis (Rhabditis) costai sp.n. (Nematoda-Rhabditidae) isolated from bovine otitis]. / Rhabditis (Rhabditis) freitasi sp.n. e Rhabditis (Rhabditis) costai sp.n. (Nematoda-Rhabditidae) isolados de otite bovina.

The author described two new species of Nematoda-Rhabditidae collected from the auditory meatus of catle with ear infection: Rhabditis (Rhabditis) freitasi sp.n. from Formosa county in the state of Goiás and Rhabditis (Rhabditis) costai sp.n. from Sertãozinho county in the state of São Paulo.