[Changes of gingival groove microbiosis by orthodontic treatment].

Gingival groove and dental plaque microbiosis was studied for 6 months in patients receiving orthodontic treatment. The patients were divided in two groups according to the type of used toothbrushes (manual or electric). After fixation of orthodontic appliances the increase of S. epidermidis by simultaneous decrease of E. faecium was observed in both groups. This shift was overcome one month later. Electric toothbrush showed better effectiveness for dental hygiene in patients with fixed orthodontic appliances.