BreatheWorks

Mouth Breathing vs. Nasal Breathing: What’s the Difference and How Do I Fix It?

Reviewed by Corinne Jarvis
Written by Corinne Jarvis Published 11/16/2020 Updated 08/12/2023

Q: Why does nasal breathing matter?

A: Nasal breathing warms, filters, and humidifies air; supports nitric oxide release for better oxygen delivery; promotes healthy jaw/tongue posture; and improves sleep quality. Mouth breathing bypasses these benefits and can strain the airway, teeth, and sleep.

Q: How can I tell if I (or my child) mouth breathe?

A: Common signs include:

  • Dry mouth on waking, chapped lips, or bad breath
  • Snoring, restless sleep, or night sweats
  • Daytime sleepiness, brain fog, or behavioral concerns
  • Open-mouth posture, low tongue posture, forward head posture
  • Frequent nasal congestion with “default” mouth open
  • Dental crowding/relapse after braces, gum irritation, or cavities at the gumline

Q: Is mouth breathing bad for health?

A: Persistent mouth breathing is linked to:

  • Sleep issues (snoring, fragmented sleep, symptoms consistent with sleep-disordered breathing)
  • Dental/orthodontic concerns (narrow palate, crowding, relapse after braces)
  • Feeding/swallowing differences (low tongue posture, inefficient chewing)
  • Behavior & focus (daytime fatigue can look like inattention/irritability)
  • TMJ strain & posture changes (forward head posture to open the airway)

Q: What causes mouth breathing?

A: Usually a combination of:

  • Nasal obstruction (allergies, deviated septum, enlarged adenoids/tonsils, chronic congestion)
  • Habits/posture (open-mouth rest posture, thumb sucking/pacifier use)
  • Oral restrictions (tongue tie limiting tongue-to-palate rest)
  • Low oral muscle tone (lips/tongue/jaw fatigue)
  • History of airway infections or reflux

Q: How is mouth breathing evaluated?

A: At BreatheWorks, we assess:

  • Airway & nasal patency (can you breathe comfortably through the nose?)
  • Oral rest posture (lips sealed, tongue on palate, teeth slightly apart)
  • Swallow pattern (look for tongue thrust)
  • Sleep history (snoring, restlessness, mouth open at night)
  • Feeding/chewing mechanics in kids and adults
    We coordinate with ENTs, dentists/orthodontists, pediatricians, and lactation specialists when medical or dental factors are involved.

Q: Can mouth breathing be corrected? What are the steps?

A: Yes—most people improve with a stepwise plan:

  1. Clear the nose: Saline rinses, humidification, allergy management with your medical provider.
  2. Retrain breathing: Myofunctional breathing drills to promote gentle, quiet nasal breathing at rest and during activity.
  3. Restore oral posture: Tongue-to-palate rest, lips sealed, teeth lightly apart; build lip/tongue strength.
  4. Correct swallow: Eliminate tongue thrust and normalize suck-swallow-breathe patterns (kids and adults).
  5. Address contributors: ENT evaluation for obstruction; dental/ortho collaboration for palate/relapse; consider tongue-tie assessment when appropriate.
  6. Reinforce habits: Daytime practice + nighttime strategies (nasal hygiene routine, side-sleeping, provider-guided mouth-taping where appropriate and safe).

Good news: Our virtual care delivers the same coaching, exercises, and progress tracking as in-person sessions.

Q: What exercises help transition from mouth to nasal breathing?

A: Programs are individualized, but commonly include:

  • Nasal priming: Gentle nose-unblocking drills, diaphragmatic breathing
  • Lip seal work: Isometric/isotonic lip tasks; straw or button exercises where appropriate
  • Tongue posture & strength: Elevation drills to the palate, lateralization, suction hold
  • Swallow retraining: Cueing patterns that keep the tongue on the palate and lips relaxed
  • Habit reversal: Strategies to reduce open-mouth rest, thumb/pacifier habits, and screen-time postures

(Always complete exercises after an evaluation to ensure safety and the right sequence.)

Q: When should a provider refer for therapy?

A: Refer to BreatheWorks if patients present with:

  • Persistent mouth-open posture or habitual snoring
  • Orthodontic relapse, narrow palate, or persistent crossbite
  • Feeding/chewing fatigue, strong gag, or picky eating with texture avoidance
  • Suspected tongue tie ankyloglossia or low resting tongue posture
  • Sleep concerns unresponsive to routine hygiene changes

We co-manage with ENTs (airway), dentists/orthodontists (arch development/retention), pediatricians (growth/behavior), and naturopaths/MDs/DOs (inflammation/allergies).

Q: Can this be done via telehealth?

A: Yes. Our teletherapy is designed to match in-person outcomes. We provide virtual evaluations, live exercise coaching, progress tracking, and home-setup guidance—ideal for families and busy adults.

Q: Do you serve my area?

A: In-person care is available in:

  • Portland, Oregon
  • Eugene, Oregon
  • Lake Oswego, Oregon
  • Bellevue, Washington
  • Amarillo, Texas

We also provide virtual care so patients nationwide can access the same expertise.

FAQs

Is mouth breathing ever normal? Temporary mouth breathing during a cold is common; chronic mouth breathing should be evaluated.

Will switching to nasal breathing help sleep? Often yes—nasal breathing supports quieter sleep and may reduce snoring and nighttime waking.

Could braces fail if I mouth breathe? Muscle habits drive tooth position. Correcting oral posture reduces relapse risk after orthodontics.

Is mouth-taping safe? Only with professional guidance and never if nasal obstruction is suspected. Start with an evaluation.

Next Steps

Ready to move from mouth to nasal breathing—safely and step-by-step?

  • Schedule a breathing & airway evaluation (in-person or virtual)
  • Providers: Refer a patient to BreatheWorks

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