Written and medically reviewed by Dr. Maged Shokralla, DMD, Logos Dental. Last reviewed: August 2026.
Many patients come to our Houston dental office with dry mouth, also known as xerostomia, without realizing they have it. While an occasional dry mouth may seem harmless, persistent dry mouth can have a significant impact on your oral health and increase your risk of cavities, gum disease, mouth infections, and other problems.
What is dry mouth?
Dry mouth occurs when the salivary glands do not produce enough saliva to keep your mouth adequately moist.
Saliva is much more important than simply keeping your mouth wet. It helps protect your teeth and gums by washing away food particles, helping neutralize acids produced by harmful bacteria, and supporting a healthy oral environment.
When saliva production decreases, your mouth loses some of its natural protection against tooth decay and gum disease.
Why is dry mouth bad for my oral health?
Saliva plays an important role in maintaining healthy teeth and gums. It helps:
- Wash away food particles and sugars.
- Neutralize acids produced by oral bacteria.
- Protect tooth enamel.
- Support a healthy balance of bacteria in the mouth.
- Make chewing, swallowing, and speaking easier.
- Keep the tissues inside your mouth comfortable and hydrated.
When there isn’t enough saliva, plaque and bacteria can build up more easily. This can lead to an increased risk of cavities, gum disease, bad breath, mouth sores, and infections.
Because dry mouth can develop gradually, many people don’t realize they have a problem until they begin experiencing symptoms or develop dental complications.
What are the symptoms of dry mouth?
If you are not producing enough saliva, you may experience some of the following symptoms:
- A dry or sticky feeling in your mouth.
- Thick or stringy saliva.
- Frequent bad breath.
- Difficulty chewing, speaking, or swallowing.
- A dry or sore throat.
- Hoarseness.
- A dry, rough, or grooved tongue.
- Changes in your sense of taste.
- Difficulty wearing dentures comfortably.
- Increased thirst.
If these symptoms occur frequently, it is worth discussing them with your dentist or healthcare provider.
What causes dry mouth?
There are many possible causes of xerostomia. One of the most common is medication use. A number of prescription and over-the-counter medications can reduce saliva production, including certain medications used to treat:
- High blood pressure.
- Depression and anxiety.
- Allergies.
- Nasal congestion.
- Muscle conditions.
- Pain.
- Parkinson’s disease.
Other possible causes include:
Aging
Dry mouth can become more common with age, although dry mouth should not simply be considered a normal part of getting older. Medications and underlying health conditions are often contributing factors.
Tobacco and alcohol
Smoking and tobacco use can contribute to dry mouth and increase the risk of other oral health problems. Alcohol can also contribute to dehydration and reduced saliva.
Snoring and mouth breathing
People who frequently breathe through their mouth, particularly while sleeping, may wake up with significant dryness.
Dehydration
Not drinking enough fluids, excessive sweating, vomiting, diarrhea, or other causes of dehydration can temporarily or persistently contribute to dry mouth.
Medical conditions and treatments
Certain medical conditions and treatments can affect salivary gland function, including:
- Diabetes.
- Sjögren’s syndrome and other autoimmune conditions.
- Salivary gland inflammation or infection.
- Salivary gland stones.
- Radiation therapy involving the head and neck.
- Chemotherapy.
- Certain neurological conditions.
If you believe a medical condition or medication is contributing to your dry mouth, talk with your healthcare provider and dentist. Never stop taking a prescribed medication without first speaking with the prescribing healthcare professional.
What problems can dry mouth cause?
Persistent dry mouth can create an environment where dental problems develop more easily.
Potential complications include:
- Increased plaque buildup.
- Increased risk of tooth decay and cavities.
- Increased risk of gum disease.
- Mouth sores and irritation.
- Oral yeast infections, such as thrush.
- Cracked lips.
- Sores or cracks at the corners of the mouth.
- Difficulty chewing and swallowing.
- Difficulty wearing dentures comfortably.
- Changes in taste.
- Bad breath.
In severe cases, difficulty chewing and swallowing can also make it harder to maintain a healthy diet. Patients who wear dentures often notice the difference first, since a dry mouth makes a comfortable fit harder to maintain.
How is dry mouth treated?
Treatment depends on why the dry mouth is occurring and how severe it is. The primary goals are to improve comfort, increase moisture in the mouth when possible, and protect the teeth and gums from the increased risk of decay and infection.
Your dentist or healthcare provider may recommend:
Stay hydrated
Drink water regularly throughout the day. Keeping water available can help relieve the uncomfortable feeling of dryness.
Stimulate saliva production
Sugar-free chewing gum or sugar-free lozenges can stimulate saliva production. Products designed specifically for dry mouth, such as Biotene saliva-stimulating lozenges, may also provide relief.
Use saliva substitutes
Some over-the-counter products are designed to moisturize the mouth and temporarily replace some of the functions of natural saliva.
Maintain excellent oral hygiene
Because dry mouth increases the risk of cavities and gum disease, brushing twice a day with fluoride toothpaste, cleaning between your teeth daily, and maintaining regular dental visits are especially important.
Avoid things that can make dry mouth worse
Consider limiting or avoiding:
- Smoking and tobacco products.
- Alcohol.
- Excessive caffeine.
- Sugary drinks and foods.
- Carbonated beverages.
- Very acidic foods and drinks.
- Very spicy or dry foods when they cause irritation.
Cleanings, exams, and fluoride treatments do more for a dry mouth than most patients expect. Our Spring Branch team builds a prevention plan around what is actually causing your dryness.
When should you see a dentist?
If you regularly experience a dry or sticky mouth, don’t ignore it. Chronic dry mouth is uncomfortable, and it also puts your teeth and gums at greater risk.
Your dentist can evaluate your mouth for signs of tooth decay, gum disease, infection, and other complications. Your dentist can also discuss your symptoms, medications, oral hygiene routine, and possible causes of your dry mouth.
If a medication or medical condition may be contributing to the problem, your dentist may recommend that you speak with your physician or other healthcare provider.
Protect your smile from the effects of dry mouth
Dry mouth is common, but it doesn’t have to mean accepting poor oral health. Recognizing the symptoms early and taking steps to protect your teeth and gums can make a significant difference.
If you frequently experience dry mouth, talk to your dentist about it at your next visit, or schedule an appointment if the symptoms are persistent. Early evaluation can help identify the possible cause and allow you to take steps to protect your smile.
Let’s Smile Together!
We’re welcoming new patients at our Spring Branch office in Houston and would love to have you. Call us directly at (346) 291-5944 or request an appointment online, and our team will get back to you promptly.