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Study of the mandibular movements during swallowing
J Nogueras1, J Salsench, J Torrent
1University of Barcelona School of Dentistry.
Cranio : the Journal of Craniomandibular Practice
|October 1, 1991
Summary
This study found no dental contact occurs when swallowing liquids through a straw. Researchers used kinesiography to record jaw movements in adults, confirming this key finding about oral motor behavior.
Area of Science:
- Dentistry
- Biomechanics
- Physiology
Background:
- Understanding mandibular movement during swallowing is crucial for diagnosing oral motor disorders.
- Liquid ingestion via a straw is a common behavior with specific biomechanical requirements.
Purpose of the Study:
- To investigate mandibular movement patterns during straw-mediated liquid swallowing.
- To determine if dental contact occurs during this specific mode of ingestion.
Main Methods:
- Kinesiography was employed to record mandibular movements in 66 healthy adults (ages 24-35).
- Participants swallowed 150 ml of water through a straw positioned between the lips.
- Thirteen variables of mandibular movement were measured and descriptively analyzed.
Main Results:
- Analysis revealed no instances of dental contact during the swallowing of liquids using a straw.
- Specific patterns of mandibular motion were observed and quantified.
Conclusions:
- The findings indicate that swallowing liquids through a straw, with the straw between the lips, does not involve occlusal contact.
- This suggests a distinct biomechanical pathway for straw drinking compared to other swallowing methods.