ARDILA MEDINA, Carlos Martín    GUZMAN, Isabel Cristina. Family groupings in chronic periodontitis. []. , 15, 6, pp. 954-962. ISSN 1025-0255.

Background: chronic periodontitis is an infectious disease associated with anaerobic gram-negative microorganisms. These organisms begin a series of events leading to periodontal and alveolar attachment loss around the tooth. Objective: to present some clinical, x-ray and microbiological patterns common to five brothers, two husbands, and father and son, diagnosed with generalized severe chronic periodontitis. Method: a descriptive study was conducted, where five brothers (family group 1), two couples (family group 2), and father and son (family group 3) were evaluated in the dental clinic of the Faculty of Dentistry at the University of Antioquia (Medellin, Colombia). Each patient was carried out a complete medical history, as well as clinical, radiographic and microbiological examination. Results:  all patients showed high percentages of bacterial plaque and bleeding on probing, as well as a large number of periodontal pockets with depths >;= 5 mm and attachment levels loss >;= 2 mm. Radiographically, horizontal bone loss was observed in most patients and angled bone defects in some of them. The microbiological examination of family group 1 had a higher prevalence of Fusobacterium nucleatum followed by Porphyromona gingivalis, while groups two and three showed a high frequency of P. gingivalis. Conclusions: family groupings observed and findings of several studies suggest that family transmission of pathogens is an important factor to take into account in the organization of bacteria in the biofilm.

: CHRONIC PERIODONTITIS [DIAGNOSIS]; GRAM-NEGATIVE BACTERIA; FUSOBACTERIUM NUCLEATUM; EPIDEMIOLOGY, DESCRIPTIVE.

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