Circadian Rhythm and Saliva

According to the World Health Organization (WHO), “Dental caries (also known as tooth decay or dental cavities) is the most common noncommunicable disease worldwide”1.  What can you do to reduce tooth decay? In addition to a low-sugar diet, good oral hygiene, and oral health care, sleep may offer tooth protection. Studies have shown that poor sleep can increase the risk of tooth decay. 

A recent study offers one possible explanation for why sleep impacts dental health. It suggests that poor sleep affects the production and flow of saliva. Saliva flow is important for oral health. It washes away food and bacteria, strengthens tooth enamel, and balances acids. Saliva production and flow follow the circadian rhythm. It is low at night and gradually increases to peak in the afternoon. Disturbances in the circadian rhythm can affect saliva flow and composition. This may result in increased tooth decay. Research has shown that a regular sleep-wake schedule can help reduce tooth decay. Protect your teeth, by protecting your sleep!  

 

Clocks Sleep; Jun 2023 5(2) 295-312 

1.https://www.who.int/news-room/fact-sheets/detail/sugars-and-dental-caries 

2.Clocks & Sleep | Free Full-Text | The Relationship between Sleep, Chronotype, and Dental Caries—A Narrative Review (mdpi.com) 

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