Dry Mouth at Night: Causes, Effects, and Remedies

What Causes Dry Mouth at Night?

Dry mouth occurs when your salivary glands don't produce enough saliva to keep your mouth moist. While daytime dry mouth is often linked to dehydration or medication side effects, nighttime dryness has its own set of causes:​

• Mouth Breathing During Sleep
  • Breathing through your mouth instead of your nose during sleep can quickly dry out your mouth.
  • Especially common among people who snore or have nasal congestion.
  • Mouth breathing bypasses the natural humidity that nasal breathing provides, which leads to increased dryness.
• Medications
  • Many over-the-counter and prescription medications list dry mouth as a side effect.
    • Antihistamines, decongestants, antidepressants, blood pressure medications, and certain pain relievers.
  • If you take medications at night, their effects may be more pronounced during sleep.
• Dehydration
  • Not drinking enough water throughout the day can lead to dehydration, which reduces saliva production.
    • Go to bed dehydrated, you're more likely to wake up with a dry mouth.
• Alcohol and Caffeine
  • Both alcohol and caffeine are diuretics,
    • They increase urine production and can lead to dehydration.
  • Consuming these substances, especially in the evening, can intensify dry mouth symptoms during the night.
• Health Conditions
  • Certain health conditions can affect saliva production.
  • Diabetes, stroke, Alzheimer's disease, and autoimmune disorders like Sjögren's syndrome can lead to chronic dry mouth.
  • Radiation therapy for head and neck cancers can damage salivary glands, reducing saliva output.

Effects of Dry Mouth at Night

While dry mouth may seem like a minor inconvenience, it can have several negative effects on your health:

• Disrupted Sleep: Constantly waking up to drink water can interrupt your sleep cycle, leading to daytime fatigue.
• Oral Health Issues:
  • Saliva plays a crucial role in neutralizing acids and washing away food particles and bacteria.
  • A lack of saliva increases the risk of tooth decay, gum disease, and oral infections.
• Difficulty Swallowing and Speaking: A dry mouth can make it uncomfortable to chew, swallow, or speak, which affects daily activities and quality of life.
• Bad Breath: Reduced saliva flow can lead to a buildup of bacteria in the mouth, causing bad breath (halitosis).

Remedies to Alleviate Dry Mouth at Night

There are several strategies you can implement to reduce or prevent dry mouth during sleep:

• Stay Hydrated
  • Drink plenty of water throughout the day.
  • Sip water regularly, especially in the evening
    • Avoid drinking large amounts right before bed to prevent frequent nighttime urination.
  • At night keep a glass of water to sip nearby should you wake up with a dry mouth.
• Use a Humidifier
  • Adding moisture to the air with a humidifier can help prevent your mouth from drying out during the night.
  • This is especially beneficial if you sleep in a dry environment, during winter months, or you have nasal congestion.
• Practice Nasal Breathing
  • If you tend to breathe through your mouth while sleeping, try to retrain yourself to breathe through your nose to avoid dryness.
  • Using nasal strips or a saline nasal spray before bed can help open nasal passages and encourage nasal breathing.
• Adjust Your Sleep Position
  • Sleeping on your side may help reduce snoring and encourage nasal breathing for some individuals. Experimenting with your sleep position and using pillows to elevate your head can help promote keeping your mouth closed during sleep.
• Avoid Dehydrating Substances
  • Limit your intake of alcohol, caffeine, and tobacco, especially in the hours leading up to bedtime.
    • These substances can contribute to dehydration and intensify dry mouth symptoms.
• Use Alcohol-Free Mouthwash
  • Traditional mouthwashes often contain alcohol, which can dry out your mouth.
  • Use alcohol-free mouthwashes designed for dry mouth relief.
• Chew Sugar-Free Gum or Lozenges
  • Chewing sugar-free gum or sucking on sugar-free lozenges can stimulate saliva production, providing temporary dry mouth relief.
    • Look for products that contain xylitol which can also help prevent cavities
• Try Saliva Substitutes
  • Over-the-counter saliva substitutes can provide temporary relief
    • Available in sprays, gels, and rinses.
• Maintain Good Oral Hygiene
  • Brush your teeth twice a day with fluoride toothpaste and floss daily to keep your mouth clean.
  • Regular dental check-ups are essential to monitor and address any oral health issues.

When to Consult a Healthcare Professional

• If dry mouth persists despite implementing these remedies, it's important to consult a healthcare professional.
• Persistent dry mouth can be a sign of an underlying health condition that requires medical attention.
• A healthcare provider can help identify the cause and recommend appropriate treatments.

Prevent Common Oral Health Issues for a Healthy Smile

Common oral health issues can include cavities and tooth decay, gum disease, staining and sensitivity. The main culprit of which is often plaque buildup—a sticky film of bacteria that forms on teeth. If not treated, these conditions can lead to tooth loss and may even affect your overall health.

By following a complete oral care routine, you can help nip these issues in the bud, for a stronger, healthier smile:

• Brush 2X/day with an Oral-B iO Electric Toothbrush: An electric toothbrush, like the Oral-B iO helps remove up to 100% more plaque than a regular manual toothbrush. The dentist-inspired round brush head surrounds each tooth as it adapts to the curves of teeth and gums to ensure a cleaner, healthier smile—even in hard-to-reach areas.
• Protect Your Smile with Crest Pro-Health Toothpaste: Make sure to brush twice a day with stannous fluoride toothpaste. Not only does it help fight cavities, Crest Pro-Health toothpasteformulated with stannous fluoride also strengthens enamel, fights sensitivity, and offers 24-hour protection from plaque buildup when you brush twice a day.
• Rinse with Crest Pro-Health Mouthwash: Swish with an antibacterial mouthwash to rinse away leftover plaque, support gum health and leave your mouth feeling clean and fresh.
• Pair String Floss with an Oral-B Water Flosser: Flossing once daily helps dislodge plaque and debris from between teeth. Adding a water flosser to your routine can help remove any leftover food particles and plaque buildup for an added layer of protection.

By following a thorough oral care routine at home and visiting your dental professional at least twice a year, you can reduce the risk of developing tooth decay, gum disease, and protect your smile for years to come.

Summary

Dry mouth occurs when your salivary glands don’t produce enough saliva to keep your mouth moist. This can be worse at night when saliva production naturally decreases. But other factors can contribute to a dry mouth that is uncomfortable and could disrupt your sleep and affect you throughout the day. Mouth breathing, medications, dehydration, as well as certain health conditions contribute to nighttime dry mouth. While usually harmless, persistent dry mouth has a number of negative effects such as poor sleep quality, and increased risk of dental issues like tooth decay, gum disease, and bad breath. You can also experience difficulty swallowing and speaking as well as mouth sores and infection. Fortunately, there are a number of remedies to alleviate dry mouth. Staying hydrated, using a humidifier, practicing nasal breathing, and using sugar-free gum or lozenges can help. If your dry mouth persists, consult a healthcare professional for evaluation and treatment recommendations.