[The condition of periodontium in children treated with removable orthodontic devices].

The purpose of the study was establishing whether, and if so, which regulatory devices traumatize the parodontal tissues. Clinical examination was done in 60 children treated with functional devices and 20 with mechanical devices before the treatment and 3 to 5 months after treatment beginning. The condition of the parodontium was assessed by means of the gingival index and the periodontal index of Russell. Oral hygiene was assessed using the plaque index. In the light of the obtained results it may be said that removable functional and mechanical devices for teeth regulation caused no pathological changes in parodontal tissues in children aged 7-10 years.