Dynamics of colonization by Aggregatibacter actinomycetemcomitans in aggressive periodontitis families: case-control-study

Resumo

Aggressive periodontitis(AgP) is a disease characterized by the presence of periodontal pathogens and family aggregation of cases, possibly related to the vertical transmission of microorganisms. Thus, the project has evaluated the pattern of colonization of some pathogens in children of parents affected by generalized aggressive periodontitis, compared to children of periodontally healthy parents. Five edentulous babies and 15 primary, mixed and permanent dentate children from families with parents affected by AgP were selected and, by a age and gender-matched approach, similar population from eriodontally heath individuals were also selected. From all subjects, saliva was collected, had a DNA extracted and sequenced for Aggregatibacter actinomycetemcomitans (Aa), Porphyromonas gingivalis (Pg), Treponema denticola (Td), Tannerella forsythia (Tf) identification. Results showed a higher prevalence in AgP-family children regarding Td and Tf. denticola in mixed and permanent dentition (p<0.05). In conclusion,the presence of disease in parentes negatively affectthe oral microbiota of their descendants.