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Effect Of Oral Screen Treatment On Dentition, Lip Morphology, And Function In Children With Incompetent Lips, Py Owman-Moll, Bengt Ingervall

International Journal of Orofacial Myology and Myofunctional Therapy

The effect of treatment with an oral screen was studied in sixteen children with incompetent lips who were compared with a control group of sixteen children who also had incompetent lips. The period of observation was I year. The treatment brought about retroclination of proclined maxillary incisors with a resulting decrease in overjet, in the diastema between the in­cisors, and in arch length. The mandibular incisors proclined somewhat. No change in general intermaxillary relation or in arch width was observed with the treatment. Neither lip morphology nor the electromyo­graphically recorded function of the lips was affected by the treatment. The …