[Bacterial periodontal plaque in childhood. Literature review].

Bacterial colonization is investigated: before eruption, in primary dentition, mixed dentition and permanent dentition, with and without gingival inflammation. Microorganisms such as spirochetes and Black pigmented Bacteroides are implicated in the periodontal disease. These germs arrive later than teeth and their importance grows with age and gingival inflammation. Different reviews have emphasised the potential role of specific pathogens in the aetiology of periodontitis. The plaque composition of necrotizing ulcerative gingivitis and periodontitis in their pre and post pubertal forms, localized and generalized is investigated. A actinomycetemcomitans, B. intermedius and spirochetes can be isolated from children having destructive periodontal disease. Changes in flora can then be explained.