Frequency of detection of Actinobacillus actinomycetemcomitans in young patients during fixed orthodontic therapy.

The aim of the present study was to assess the occurrence of Aa in subgingival plaques from young subjects undergoing orthodontic treatment with fixed appliances; moreover we sought a possible relationship between the presence of Aa and the clinical conditions, also taking into consideration the different types of appliances, i.e., orthodontic bands or brackets.