The Open Mouth You Keep Noticing
You've noticed it during naps. Maybe during the day too. Your baby's mouth hangs open, and they're breathing through it instead of their nose. Maybe there's a little snore, or noisy breathing, or a dry mouth when they wake. It might seem minor, even cute. But it's worth understanding.
Nose breathing is how humans are designed to breathe, especially during sleep. The nose filters, warms, and humidifies air and supports healthy development. Habitual mouth breathing in babies and toddlers isn't just a quirk. It can be a signal worth paying attention to, and sometimes it connects back to tongue function and the airway.
At Latched Beginnings in Austin, airway health is part of how Dr. Kacie Culotta evaluates every baby. Here's what mouth breathing can mean and when to look into it.
Why Nose Breathing Matters So Much
Breathing through the nose does a lot of quiet, important work. It filters out particles, warms and humidifies the air, and supports the right pressure and airflow for developing airways. Nasal breathing also encourages the tongue to rest up against the palate, which helps shape the mouth properly.
Mouth breathing skips all of that. Over time, chronic mouth breathing is associated with a drier mouth, altered facial and jaw development, disrupted sleep, and a low tongue posture that can affect how the mouth grows. That's why it's worth understanding rather than ignoring.
Common Reasons Babies Breathe Through Their Mouths
Mouth breathing has several possible causes. Sorting out which one applies is the key.
Congestion or a Stuffy Nose
The most common and usually temporary cause. A cold, allergies, or normal newborn congestion can force mouth breathing until the nose clears. This type comes and goes with the congestion.
Enlarged Tonsils or Adenoids
In older babies and toddlers, enlarged tonsils or adenoids can block nasal airflow and drive mouth breathing, often with snoring. This is worth a pediatrician or ENT evaluation.
Tongue-Tie and Low Tongue Posture
A restricted tongue often rests low in the mouth instead of up at the palate. A low tongue posture can encourage an open-mouth, mouth-breathing pattern.
Habit and Muscle Patterns
Sometimes mouth breathing becomes a learned pattern, especially after a long period of congestion. The muscles get used to the open-mouth posture.
Structural Airway Factors
A narrow palate, nasal structure, or other airway factors can contribute, and these sometimes connect back to tongue function and development.
The Tongue-Tie and Airway Connection
Here's where it ties together. The tongue is supposed to rest against the roof of the mouth. That posture keeps the mouth closed, supports nasal breathing, and helps the palate develop into a broad shape with good airflow. A tongue-tie can prevent the tongue from reaching that resting position.
When the tongue sits low, the mouth tends to stay open, which encourages mouth breathing. And a narrow palate from a low tongue can reduce the nasal airway, making nose breathing harder. It can become a cycle. This is why a provider trained in airway health looks at tongue function when evaluating mouth breathing, rather than treating it as an isolated symptom.
When Mouth Breathing Deserves Attention
Occasional mouth breathing during a cold is nothing to worry about. The pattern worth investigating is habitual mouth breathing, especially when it comes with other signs.
Watch for mouth breathing that persists when your child is well, snoring or noisy breathing during sleep, restless or disrupted sleep, frequent waking, a chronically open-mouth posture during the day, dark circles under the eyes, or daytime tiredness and irritability. When several of these show up together, an evaluation that includes the airway and tongue function is worthwhile.
What Can Be Done
The right approach depends on the cause, which is why evaluation comes first. If congestion or allergies are the driver, treating those may resolve it. If enlarged tonsils or adenoids are blocking the airway, a pediatrician or ENT can assess that. If a tongue-tie and low tongue posture are contributing, addressing the restriction along with myofunctional therapy to retrain tongue resting position can help.
Often it takes a team. The most thorough plans combine the right specialists so the airway, the structure, and the tongue function are all addressed. The goal is comfortable, healthy nasal breathing, especially during sleep.
How Latched Beginnings Approaches Mouth Breathing in Austin
Most providers treat mouth breathing as a stuffy-nose issue and stop there. Dr. Kacie Culotta looks deeper, because airway health is central to how she practices.
She trained as a Breathe Institute Ambassador and is a qualified dentist with the American Academy of Dental Sleep Medicine, which means she evaluates mouth breathing in the context of tongue function, palate development, and long-term airway health. As a lactation counselor and dentist, she connects what's happening today with how it could affect your child's breathing and development for years.
If your baby is breathing through their mouth, we'll help you figure out why, coordinate with the right specialists in Austin, and build a plan that supports healthy breathing. Sometimes it's simple congestion. Sometimes it's part of a bigger airway picture worth addressing early. Either way, you'll have answers.
Frequently Asked Questions
Why is my baby breathing through their mouth?
Common causes include congestion or a stuffy nose, enlarged tonsils or adenoids in older babies, a tongue-tie with low tongue posture, learned muscle habits, and structural airway factors. Occasional mouth breathing during a cold is normal. Habitual mouth breathing when your baby is well is worth evaluating to find the cause.
Is mouth breathing in babies a problem?
Occasional mouth breathing during congestion is normal and temporary. Habitual mouth breathing can be a concern because nasal breathing filters and humidifies air and supports healthy development. Chronic mouth breathing is associated with disrupted sleep, dry mouth, and altered facial and jaw growth, so a persistent pattern is worth looking into.
Can a tongue-tie cause mouth breathing?
It can contribute. A tongue-tie often keeps the tongue resting low instead of against the palate, which encourages an open-mouth posture and mouth breathing. A low tongue can also lead to a narrower palate that reduces the nasal airway. This is why airway-trained providers evaluate tongue function in mouth breathers.
Does mouth breathing affect my child's face and teeth?
Over time, chronic mouth breathing is associated with a longer face shape, altered jaw development, a narrower palate, dry mouth with higher cavity risk, and gum irritation. Addressing the underlying cause early, whether congestion, airway obstruction, or tongue function, helps support healthier development.
My toddler snores and breathes through their mouth. Should I be concerned?
Snoring and habitual mouth breathing together are worth evaluating. They can signal enlarged tonsils or adenoids, a tongue and airway issue, or other factors affecting sleep. Disrupted sleep in young children can affect mood, behavior, and development, so an evaluation that includes the airway is reasonable.
When should I see a specialist about my baby's mouth breathing?
See a provider if mouth breathing persists when your child is well, comes with snoring or restless sleep, frequent waking, a chronically open mouth during the day, dark under-eye circles, or daytime tiredness. When several of these appear together, an evaluation including airway and tongue function is worthwhile.
How is mouth breathing from a tongue-tie treated?
Treatment depends on the cause. If a tongue-tie and low tongue posture are contributing, addressing the restriction along with myofunctional therapy to retrain tongue resting position can help. If congestion, allergies, or enlarged tonsils are involved, those are treated too. A team approach addressing airway, structure, and function works best.
Where can I get an airway and mouth breathing evaluation in Austin?
Latched Beginnings at 1701 Simond Ave, Suite 107A in Austin is led by Dr. Kacie Culotta, a Breathe Institute Ambassador and airway-trained dentist who evaluates mouth breathing alongside tongue function and development. We coordinate with ENTs and other specialists and serve families across Austin, Mueller, East Austin, Round Rock, Cedar Park, Pflugerville, Leander, and Georgetown.
Call to Action
If you've been wondering whether your baby might have a tongue-tie, you don't have to figure it out alone. Dr. Kacie Culotta and the all-mom team at Latched Beginnings are here to listen, evaluate, and walk you through what's actually going on with your baby. Schedule a 1-on-1 consultation in Austin and let's talk through it together. Trust your instincts. We'll take it from there.
