Whole Unstimulated Salivary Flow Rate DecreasesDuring Acute Stressful Condition
Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology(2024)
摘要
Objective
To examine the influence of acute stress on salivary flow using a validated stressor paradigm.
Study Design
This uniform crossover study consisted of 40 healthy adults who underwent the Trier Social Stress Test (TSST), consisting of a 5-minute mental arithmetic task (MAT), and a non-stressful task (NST), consisting of a 5-minute free speech task. The order of the tasks was counterbalanced and unstimulated whole saliva (UWS) was measured in two groups of 20 participants during each 5-minute task condition, with a 10-minute washout period between tasks. At baseline, mathematical ability was self-reported and psychological distress was measured using the Symptom Checklist-90-Revised. Heart rate (HR) and breathing rate (BR) were recorded during each task.
Results
Age, sex, HR, BR, and psychological distress were similar between groups at baseline (p>0.05). During the MAT, HR increased significantly and mean UWS flow rate decreased significantly compared with the NST (p<0.001).
Conclusions
An acute psychobiological stressor task was associated with a rapid decrease in salivary flow in adults. Thus, stress can contribute to reduced salivary flow and should be considered as a factor during the diagnostic workup of patients who complain of a dry mouth.
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关键词
Saliva,psychological stress,physiological stress,xerostomia,autonomic nervous system
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