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Effect of muscle exercise with an oral screen on lip function
1Orthodontic Clinic, University of Bern, Switzerland.
European Journal of Orthodontics
|May 1, 1990
Summary
Oral screen treatment for protruding incisors improved lip strength and reduced overjet in children. However, lip pressure on teeth remained largely unchanged, with some relapse observed post-treatment.
Area of Science:
- Orthodontics
- Pediatric Dentistry
- Oral Myology
Background:
- Protruding maxillary incisors are common in children.
- Lip function and pressure can influence dental alignment.
- Oral screens are used in orthodontic interventions.
Purpose of the Study:
- To evaluate the impact of oral screen therapy on lip strength.
- To assess changes in lip pressure on teeth during various functions.
- To examine the effects on dentition, specifically overjet and arch length.
Main Methods:
- A 9-month intervention with an oral screen and lip training program.
- 16 children aged 7-11 with protruding incisors participated.
- Measurements included lip strength (dynamometer), lip pressure (transducer), dental casts, and cephalograms.
Main Results:
- Lip strength increased during treatment but decreased post-treatment.
- Overjet and upper dental arch length decreased, with some relapse.
- Lip pressure at rest and during swallowing was unaffected; pressure during chewing increased temporarily.
Conclusions:
- Oral screen therapy can enhance lip strength and improve incisor protrusion.
- Long-term effects on lip pressure and dental alignment require further investigation.
- The treatment shows potential but necessitates ongoing monitoring for stability.