Have you ever thought about where your tongue rests inside your mouth right now? Most people never consider it. Yet the position of your tongue — especially during sleep — can shape your breathing, your jaw health, and how well you rest each night. I’m Dr. Farshid Ariz, DMD, a periodontist at the TMJ & Sleep Centre of San Fernando Valley in Northridge, California. Every week, I see patients whose sleep problems trace back to something as simple as tongue posture. Let me walk you through why this matters and what you can do about it.
What Is Tongue Posture and Why Does It Matter?
Tongue posture refers to where your tongue naturally sits when you are not eating or speaking. Ideally, the entire surface of your tongue should rest gently against the roof of your mouth. The tip should touch the area just behind your upper front teeth. Your lips should be closed, and your teeth should be slightly apart or lightly touching.
This resting tongue position supports your upper jaw, keeps your airway open, and encourages nasal breathing. When the tongue drops to the floor of the mouth — a habit called low tongue posture — it can contribute to a chain of problems. These include mouth breathing, snoring, obstructive sleep apnea, and TMJ dysfunction.
According to a 2020 study published in the Journal of Clinical Medicine, improper tongue resting position is significantly associated with increased prevalence of sleep-disordered breathing in adults (Giraudeau et al., 2020). That means where your tongue sits at rest is not just a cosmetic concern — it directly affects the quality of your sleep.
How Tongue Position Affects Your Airway During Sleep
When you lie down at night, gravity pulls soft tissues in your mouth and throat downward. If your tongue already rests too low during the day, it is even more likely to fall backward when you sleep. This narrows the space behind your tongue — the oropharyngeal airway — and can partially or fully block airflow.
A blocked airway leads to snoring, gasping, and fragmented sleep. Over time, this pattern can develop into obstructive sleep apnea (OSA). OSA affects roughly 26 percent of adults between the ages of 30 and 70 in the United States, according to the American Academy of Sleep Medicine. Many of these individuals have never been diagnosed.
Proper tongue posture acts like a natural airway stent. When the tongue presses upward against the palate, it lifts the soft palate and keeps the airway open. This is one reason why myofunctional therapy — exercises that retrain the tongue and facial muscles — has shown promising results for patients with mild to moderate sleep apnea.
The Connection Between Tongue Posture and TMJ Disorders
At our Northridge practice, many patients come in with jaw pain, clicking, or headaches related to temporomandibular joint (TMJ) disorders. What surprises them is that their tongue habits play a role. When the tongue rests low or pushes against the teeth, it changes how the jaw is positioned at rest. This can create muscle tension in the jaw, face, and neck.
A healthy resting tongue position helps the jaw relax into a neutral alignment. The lower jaw hangs slightly open, the muscles are at ease, and the joint itself is not compressed. If you clench or grind your teeth at night — a condition called bruxism — poor tongue posture may be part of the puzzle. Retraining tongue posture can reduce the stress on your TMJ and improve both daytime comfort and nighttime rest.
If you’re dealing with jaw tension or facial pain alongside sleep difficulties, I encourage you to read our detailed guide on how TMJ disorders affect sleep quality in Northridge patients. The overlap between these conditions is more common than most people realize.
Signs Your Tongue Posture May Be Off
How can you tell if your resting tongue position needs attention? Here are some common signs:
- Mouth breathing during the day or at night. If you wake up with a dry mouth, your tongue is likely not resting on your palate.
- Scalloped edges on your tongue. These wavy indentations along the sides of your tongue suggest it is pressing against your teeth rather than sitting on the roof of your mouth.
- Snoring or pauses in breathing during sleep. A partner may notice these before you do.
- Forward head posture. The tongue and head posture are linked. A low tongue position often accompanies the head jutting forward.
- Chronic jaw pain or tension headaches. These may indicate the jaw is compensating for improper tongue placement.
If you recognize two or more of these signs, it is worth having an evaluation. A trained clinician can assess your tongue resting position, airway, and jaw alignment together.
How to Improve Your Tongue Posture for Better Sleep
The good news is that tongue posture can be retrained at any age. It takes awareness and practice, but the benefits are real. Here are steps you can start with today.
Practice the “Mewing” Technique
This popular technique involves placing the entire tongue flat against the roof of your mouth. Not just the tip — the middle and back of the tongue should press gently upward as well. Your lips should be sealed, and you should breathe through your nose. Try to maintain this position throughout the day. Over time, it becomes automatic.
Focus on Nasal Breathing
Nasal breathing and correct tongue posture go hand in hand. When you breathe through your nose, your tongue naturally rises to the palate. When you breathe through your mouth, the tongue drops. Start by taping your awareness to nasal breathing during calm activities like reading or watching television. Some patients also benefit from learning more about obstructive sleep apnea to understand how mouth breathing worsens nighttime airway obstruction.
Consider Myofunctional Therapy
Myofunctional therapy is a structured program of exercises designed to improve the function and resting posture of the tongue, lips, and facial muscles. A review in the journal Sleep found that myofunctional therapy reduced the apnea-hypopnea index by approximately 50 percent in adults with obstructive sleep apnea (Camacho et al., 2015). These exercises are noninvasive, painless, and can be done at home.
Address Nasal Obstruction
If you cannot breathe through your nose easily, tongue retraining will be difficult. Allergies, a deviated septum, or swollen turbinates can block nasal airflow. Treating these issues is an important first step. Many of our patients in Northridge and surrounding communities like Granada Hills and Encino find that resolving nasal obstruction dramatically improves their ability to maintain proper tongue posture during sleep.
Use an Oral Appliance if Indicated
For some patients, a custom oral appliance designed to advance the lower jaw can complement tongue posture retraining. These devices help keep the airway open during sleep and can be especially helpful for patients with mild to moderate sleep apnea. You can learn more about appliance-based treatment options in our post on sleep apnea treatment options in Northridge.
Tongue Posture in Children — Start Early
Tongue posture habits often begin in childhood. Children who breathe through their mouths, use pacifiers for extended periods, or have tongue ties may develop low tongue posture early on. This can influence how the jaw and palate grow, leading to crowded teeth, narrow arches, and a higher risk of sleep-disordered breathing later in life.
If you notice your child sleeps with their mouth open, snores, or has dark circles under their eyes, a tongue and airway evaluation is a worthwhile step. Early intervention can guide proper facial development and set the foundation for lifelong healthy sleep.
What to Expect at a Tongue Posture Evaluation
When you visit our office, we look at more than just your teeth. We assess your tongue resting position, the size and shape of your palate, your nasal airway, and the relationship between your jaw joints and bite. We may also recommend a sleep study to rule out or confirm sleep apnea.
Treatment plans are individualized. Some patients benefit from myofunctional exercises alone. Others may need a combination of an oral appliance, nasal treatment, and guided exercises. The goal is always the same — a well-positioned tongue, an open airway, and restorative sleep.
Frequently Asked Questions
What is the correct tongue posture for sleeping?
The correct tongue posture for sleeping is having the entire tongue resting flat against the roof of your mouth. The tip should be positioned just behind your upper front teeth, and your lips should be gently closed. This position supports your airway and encourages nasal breathing throughout the night.
Can bad tongue posture cause sleep apnea?
Yes, improper tongue posture can contribute to sleep apnea. When the tongue rests low in the mouth, it is more likely to fall backward during sleep and block the airway. Over time, this pattern can lead to or worsen obstructive sleep apnea, especially when combined with other risk factors like excess weight or nasal obstruction.
How do I retrain my tongue to rest on the roof of my mouth?
You can retrain your tongue by practicing placing it flat against your palate throughout the day, a technique sometimes called mewing. Myofunctional therapy exercises also help strengthen the tongue muscles and build the habit. Consistency is key — most patients notice improvement within a few weeks of daily practice.
Does tongue posture affect jaw pain and TMJ disorders?
Tongue posture directly influences jaw alignment and muscle tension. When the tongue rests low or pushes against the teeth, the jaw compensates, creating strain on the temporomandibular joint. Correcting tongue posture can relieve muscle tension and reduce TMJ-related symptoms like jaw pain, clicking, and headaches.
Should I see a dentist or a doctor for tongue posture problems?
A dentist or periodontist who specializes in TMJ disorders and sleep-disordered breathing is an excellent starting point. These professionals can evaluate your tongue posture, airway, and jaw alignment together. They can also coordinate care with ENT specialists or sleep medicine physicians if additional treatment is needed.
Written by Dr. Farshid Ariz, DMD — Periodontist at the TMJ & Sleep Centre of San Fernando Valley, Northridge, California.