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[Effect of bite force on parotid secretion in human]
M Hoshi1, M Kurahashi, M Suzuki
1Department of Oral Physiology, Higashi-Nippon-Gakuen University.
Higashi Nihon Shigaku Zasshi
|December 1, 1990
Summary
Periodontal mechanoreceptors influence parotid salivary secretion. Increased bite strength boosted saliva flow, while higher bite frequency decreased it, suggesting their role in bite force-initiated salivary reflexes.
Area of Science:
- Physiology
- Neuroscience
- Oral Biology
Background:
- Periodontal mechanoreceptors detect mechanical stimuli in the jaw.
- Salivary secretion is crucial for oral health and digestion.
- The neural pathways regulating parotid saliva are complex.
Purpose of the Study:
- To investigate the role of periodontal mechanoreceptors in human parotid salivary secretion.
- To determine the effects of varying bite strength and frequency on saliva production.
- To explore the laterality of salivary responses to unilateral biting stimuli.
Main Methods:
- Bilateral parotid saliva collection using modified Lashley cups.
- Measurement of parotid saliva flow rate using a strain gauge device.
- Monitoring of bite force with a pressure transducer during controlled biting tasks.
Main Results:
- Parotid saliva flow rate increased with greater bite strength.
- Parotid saliva flow rate decreased with increased bite frequency.
- Unilateral biting resulted in higher salivary flow from the ipsilateral parotid gland compared to the contralateral side.
Conclusions:
- Periodontal mechanoreceptors are implicated in the neural regulation of parotid salivary secretion.
- Bite force and frequency are significant modulators of salivary reflexes.
- The findings support the involvement of periodontal mechanoreceptors in bite force-initiated salivary reflexes.