Dry mouth happens when your salivary glands do not make enough saliva to keep your mouth wet. It is most often a side effect of medications, and it can also come from conditions such as diabetes or Sjögren’s disease, from cancer treatment to the head and neck, or from habits like smoking and mouth breathing. Dry mouth is not a normal part of aging, and because saliva protects your teeth, it is worth addressing rather than just putting up with.
This week’s tip in our Top Ten List for Healthier Smiles is about an unsung dental hero. Saliva rinses away food, neutralizes acids, and carries minerals that help repair early weak spots in enamel. Think about the times you woke up in the middle of the night needing a drink of water because your mouth felt like the Sahara Desert. Now imagine if your mouth always felt that way. At Olympia Hills Family Dental, we help patients protect their teeth when saliva runs low, and we work alongside your physician when the cause is medical.
Common Signs of Dry Mouth
The medical term for dry mouth is xerostomia. Some people notice it right away, while others only realize it when their dentist points out new cavities. According to the National Institute of Dental and Craniofacial Research, signs can include a sticky or dry feeling in the mouth or throat, trouble chewing, swallowing, tasting, or speaking, and a burning feeling in the mouth.
You might also notice cracked lips, a dry or rough tongue, mouth sores, frequent bad breath, or dentures that rub and feel less secure. Needing water to get through a meal or waking up thirsty at night are other common clues.
What Causes Dry Mouth
Medications are the most common cause. Many prescription and over-the-counter drugs can reduce saliva, including some medicines for high blood pressure, depression, allergies, and bladder control, along with antihistamines, decongestants, pain relievers, and diuretics. Taking several medications at once can make the effect stronger.
Health conditions also play a role. NIDCR lists Sjögren’s disease, diabetes, and HIV as causes, and radiation therapy to the head and neck can damage the salivary glands. Chemotherapy can thicken saliva, and injury to the nerves of the head or neck can reduce saliva flow. Smoking, vaping, alcohol, dehydration, and sleeping with your mouth open add to the problem. If you snore or breathe through your mouth at night, our post on how snoring connects to dental health explains why that matters.
Why Dry Mouth Matters for Your Teeth
Without enough saliva, food and acids linger on your teeth, and the natural repair process slows down. NIDCR notes that dry mouth increases the risk of tooth decay and fungal infections such as thrush. Decay linked to dry mouth often shows up along the gum line and around the edges of existing fillings and crowns, and it can progress quickly.
The American Dental Association’s MouthHealthy guide also points out that saliva helps keep harmful bacteria in check. Gum irritation, sore spots under dentures, and changes in taste are more likely when your mouth stays dry.
What You Can Do at Home
Treatment depends on the cause, but these steps from NIDCR and the ADA can help most people feel more comfortable and protect their teeth:
- Sip water often: Keep water with you and sip throughout the day and with meals.
- Stimulate saliva: Chew sugar-free gum or suck on sugar-free candy, especially products with xylitol.
- Use dry mouth products: Saliva substitutes, moisturizing gels, and rinses made for dry mouth can help. The ADA suggests looking for products with its Seal of Acceptance.
- Limit drying habits: Cut back on caffeine and alcohol, avoid tobacco and vaping, and skip alcohol-based mouthwashes.
- Add moisture at night: A bedroom humidifier can ease nighttime dryness.
It also helps to avoid sugary snacks and acidic drinks between meals, since your mouth has less ability to clear them away.
Talk With Your Doctor Before Changing Any Medication
If you suspect a medication is drying your mouth, do not stop or change it on your own. Bring a full list of your prescriptions and supplements to the doctor who prescribed them. Your physician or pharmacist may be able to adjust the dose, change the timing, or suggest an alternative, and some people are prescribed medication that helps the salivary glands produce more saliva.
Your primary care doctor is also the right person to look for underlying causes, such as diabetes or Sjögren’s disease, especially if dry mouth comes with dry eyes, joint pain, or unusual thirst. We are glad to share what we see in your mouth with your physician.
How Our Dental Team Can Help
At your visit, our dentists look for early signs of dry mouth decay and help you build a plan to protect your teeth. That plan may include a prescription-strength fluoride toothpaste or in-office fluoride treatments to strengthen enamel. For many patients with dry mouth, we also recommend more frequent professional cleanings and checkups, such as every three to four months instead of every six.
If you wear dentures, we can check the fit and look for sore spots, since dry tissues are more easily irritated. As our final Top Ten tip on regular dental visits explains, routine checkups are where problems like these are caught early. As always, the professionals at Olympia Hills Family Dental are here for you.
Frequently Asked Questions About Dry Mouth
What is the most common cause of dry mouth?
Medications are the most common cause. Many prescription and over-the-counter drugs, including some blood pressure medicines, antidepressants, antihistamines, and decongestants, can reduce saliva. Health conditions such as diabetes and Sjögren’s disease and radiation therapy to the head and neck can also cause it.
Should I stop a medication that is drying my mouth?
No. Do not stop or change any medication on your own. Talk with the doctor who prescribed it, since they may be able to adjust the dose, change the timing, or suggest an alternative. In the meantime, your dental team can help protect your teeth.
Can dry mouth cause cavities?
Yes. Saliva washes away food and neutralizes acids, so when it is reduced, the risk of tooth decay goes up. Decay from dry mouth often appears along the gum line and around existing fillings and crowns.
What helps dry mouth at night?
A bedroom humidifier, keeping water at your bedside, and using a moisturizing gel or saliva substitute made for dry mouth can help. If you breathe through your mouth or snore, mention it at your visit, since that can make nighttime dryness worse.
Is dry mouth a normal part of getting older?
No. Dry mouth is not a normal part of aging. Older adults are more likely to take medications that cause it, which is why it is more common later in life. It is worth discussing with both your dentist and your doctor.
Top 10 List
#10 – When to Change Out Your Toothbrush
# 9 – “To Seal or Not To Seal, Is That Really A Question?”
# 8 – Teeth Whitening: Relationship Advice You Can Use
#7 – These are some really BRIGHT tips
# 6 – Brush Your Tongue
# 5 – When Do You Allow Your Child To Take Care of Their Own Oral Hygiene?
# 4 – Dry Mouth and What to do About It
# 3 – Preventing Dental Bone Loss
# 2 – The Dynamic Duo: Brushing and Flossing
# 1 – Don’t Be a Stranger
