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[Metrical studies of the soft-tissue behavior in the anterior dental arch in correct and prognathic anterior occlusion].

By using an intraoral electronic pressure transducer we estimated the pressures exerted by lips and tongue on the central incisors of both jaws. Our subjects were children with normal occlusion and class-III malocclusion. The forces were considered in action (swallowing, speech) and rest. We found that the pressure depends on the activity and where the measurements are taken. During the actions in general tongue pressure is higher than lip strength. But in resting the pressure on the vestibular soft tissues is higher. Forces during rest have an important influence on the total pressure, which takes duration and frequency of action as well as pressure during action and rest. The relationship between soft tissues strength and morphology was found in the lingual activities of subjects with class-III malocclusion.