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[How do occlusion disorder and stress influence cybernetic masticatory control?]
1Zahnärztliches Institut, Universität Basel.
Schweizer Monatsschrift Fur Zahnmedizin = Revue Mensuelle Suisse D'Odonto-Stomatologie = Rivista Mensile Svizzera Di Odontologia E Stomatologia
|January 1, 1992
Summary
Psychic stress significantly increases biting forces up to 600%, indicating stress is a key factor in masticatory dysfunction. Occlusal interferences alone did not raise biting force.
Area of Science:
- Biomedical Engineering
- Neuroscience
- Physiology
Background:
- Masticatory dysfunction can be influenced by various factors, including occlusal interferences and psychological stress.
- Understanding the physiological responses to stress during biting is crucial for diagnosing and treating chewing disorders.
Purpose of the Study:
- To investigate the impact of occlusal interferences and psychic stress on chewing forces.
- To determine the relationship between stress, catecholamine levels, and biting force.
Main Methods:
- Measured chewing forces, blood pressure, and blood catecholamine concentrations in three subjects.
- Induced psychic stress using a demanding reaction test machine.
- Compared biting force under normal conditions, with occlusal interferences, and under stress.
Main Results:
- Occlusal interferences did not significantly increase biting force.
- Biting force increased by up to 600% under psychic stress.
- Biochemical analysis indicated biting force was not under local control during stress.
Conclusions:
- Psychic stress is a significant etiologic factor in masticatory dysfunction.
- Elevated stress levels can override local control mechanisms influencing biting force.
- Further research into stress management may benefit patients with chewing disorders.