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Genioglossis muscle electrical activity and associated arch dimensional changes in simple tongue thrust swallow
1Department of Pedodontics, College of Dental Surgery (KMC), Mangalore, India.
The Journal of Clinical Pediatric Dentistry
|April 1, 1997
Summary
Tongue thrust swallowing in children significantly increases genioglossus muscle electrical activity and swallow duration. This contributes to increased forward (proclination) of upper front teeth, but doesn't alter arch dimensions.
Area of Science:
- Dentistry
- Physiology
- Orthodontics
Background:
- Tongue thrust swallowing is a common oral habit.
- Its effects on genioglossus muscle activity and dental arch dimensions require further investigation.
Purpose of the Study:
- To evaluate the electrical activity of the genioglossus muscle.
- To assess associated dental arch dimensional changes in children with and without tongue thrust swallowing.
Main Methods:
- Subjects: 20 schoolchildren (12-14 years) with permanent dentition.
- Groups: Group A (Angle's Class I occlusion), Group B (Angle's Class I with anterior open bite and tongue thrust).
- Evaluations: Genioglossus muscle electrical activity and dental arch dimensions (bimolar/bipremolar width, palatal depth, anterior teeth proclination).
Main Results:
- Tongue thrusters showed significantly higher genioglossus muscle electrical activity and swallow duration.
- No significant changes in bimolar/bipremolar width or palatal depth were observed between groups.
- Increased anterior teeth proclination in the upper arch was noted in tongue thrusters.
Conclusions:
- Increased genioglossus muscle activity and prolonged swallow duration in tongue thrusters correlate with anterior teeth proclination.
- Tongue thrust swallowing does not appear to significantly alter overall dental arch dimensions in this age group.