Key result
Non- or low-alcohol mouthwash decreases skin conductance versus no rinse, promoting peripheral stress recovery.
Why the study?
This study aimed to investigate the effect of alcohol in mouthwash on peripheral and cardiac autonomic nervous system activity.
Does the alcohol concentration in mouthwash affect peripheral and cardiac autonomic nervous system recovery after a cognitive stressor in healthy male adults?
Does the alcohol concentration in mouthwash affect peripheral and cardiac autonomic nervous system recovery after a cognitive stressor in healthy male adults?
Non- or low-alcohol mouthwashes may better promote recovery from peripheral stress responses compared to higher alcohol concentrations.
Hypothesis-generating for low-alcohol mouthwash after stress; leaves open effects on autonomic recovery in broader populations.
This study aimed to investigate the effect of alcohol in mouthwash on peripheral and cardiac autonomic nervous system activity. In a within-subject experimental design, 20 healthy male adults used three types of mouthwash each having a different concentration of alcohol, Alc.0%, Alc.3%, and Alc.9%, and no rinse as a control after performing a 20-minute calculation task. Along with subjective evaluation, skin conductance and electrocardiogram were recorded throughout the experiment. Although there was no difference in subjective stress levels, a significant decrease was observed in skin conductance level (SCL) in the recovery period at Alc.0% and Alc.3% respectively as compared to the control group. As for the Alc.9%, subsequent decrease in the recovery period of SCL was smaller as compared to Alc.0% and Alc.3%. The findings suggest that the use of non or low-alcohol mouthwashes promotes recovery from peripheral stress response and non or low-alcohol mouthwashes might be better suited for use in situations requiring relaxation.
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Ishikawa et al. (2023) studied Healthy (n=20). Mouthwash with varying alcohol concentrations (0%, 3%, 9%) vs. No rinse (control) was evaluated on Skin conductance level (SCL) during recovery period (p=<0.001). The use of non- or low-alcohol (0% and 3%) mouthwashes significantly decreased skin conductance levels during the recovery period compared to no rinse, promoting recovery from peripheral stress responses.
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