[Gram-negative anaerobic bacilli identified in the subgingival microflora associated with fixed dentures]

The prosthodontics devices have a major role in healthy state or disease of periodontal structures. They may initiate or amplify tissues destruction when technical features or the used material are not the most appropriate. The aim of this study was to establish the influence of different materials on the evolution of chronic periodontal diseases by comparison to lesions associated with natural teeth. Lot of study was represented by 21 partial edentulous patients with periodontitis in both natural teeth and fixed prosthodontics. Periodontal pockets were sampled and then Gram stained smear and cultivation onto selective media (Schadler + 5% sheep blood + nalidixic acid + vancomycin) were done. The isolated bacteria were identified by standard methods. We observed quantitative and qualitative differences between studied patients according to the material used for making the fixed prosthodontics.