Reviewed By Dr. Tyler N Davis, DMD
Reading Time: 3 minutes
Many children breathe through their mouths when they have a cold, allergies, or a stuffy nose. But when mouth breathing becomes a regular habit, especially during sleep, it may point to an airway issue that needs attention.
Table of Contents
What Causes Mouth Breathing in Children?
Mouth breathing is usually a sign that nasal breathing is difficult or that a habit has continued after the original blockage improved.
Common causes include:
- Enlarged adenoids
- Enlarged tonsils
- Allergies
- Chronic nasal congestion
- Frequent sinus or upper respiratory infections
- Deviated septum or nasal obstruction
- Tongue posture or oral habit patterns
- Sleep-disordered breathing
Identifying the underlying cause is important because treatment varies from child to child. Some children may benefit from medical treatment for allergies or nasal obstruction, while others may need evaluation for enlarged tonsils, enlarged adenoids, or sleep-related breathing concerns.
How Mouth Breathing Can Affect Teeth and Oral Health
Mouth breathing can dry out the mouth. Saliva helps protect teeth by washing away food particles, buffering acids, and supporting enamel health. When the mouth stays dry, children may have a higher risk of plaque buildup, bad breath, gum irritation, and cavities.
Mouth breathing may also be associated with:
- Crowded teeth
- Narrow upper arch
- High palate
- Open bite
- Crossbite
- Gum inflammation
- Increased cavity risk
- Speech or swallowing concerns in some children
A dental exam can help identify whether mouth breathing is affecting the teeth, bite, palate, or oral health.
When Mouth Breathing May Be Related to Sleep Problems
Mouth breathing during sleep can be a sign of an underlying airway issue, especially when it occurs alongside snoring, restless sleep, pauses in breathing, or daytime fatigue.
Signs to watch for include:
- Snoring most nights
- Pauses, gasping, or choking sounds during sleep
- Restless sleep
- Sweating during sleep
- Bedwetting after toilet training
- Morning headaches
- Daytime tiredness
- Trouble focusing
- Irritability or behavior changes
Because mouth breathing can affect the teeth, bite, and oral development, dentists are often among the first healthcare providers to identify signs that may be associated with sleep-disordered breathing. If sleep-related symptoms are present, further evaluation by a pediatrician or ENT specialist may be recommended.
Monitoring Oral Development at Power Road Dental Care
Mouth breathing can influence more than just the way a child breathes. Over time, it may affect tooth alignment, bite development, palate shape, and overall oral health.
At Power Road Dental Care, Dr. Tyler N. Davis monitors oral development during routine dental exams and looks for signs that may be associated with mouth breathing. If concerns are identified, he can help determine whether additional evaluation by a pediatrician, ENT specialist, or other healthcare provider may be beneficial.
Dentist in Mesa, AZ
To book an appointment at our dental office in Mesa, AZ, call (480) 664-1438 or visit us at 2500 S Power Rd STE 102, Mesa, AZ 85209. We proudly serve patients throughout the Phoenix East Valley, including Mesa, Gilbert, Chandler, Apache Junction, and Queen Creek.
FAQs
Is mouth breather face a real thing?
“Mouth breather face” is not the most clinical term, but chronic mouth breathing can be associated with facial and dental growth changes in some children. Providers may use terms such as adenoid facies, long face pattern, or mouth breathing-related growth changes.
How do I know if my child has adenoid face?
You cannot confirm adenoid face by appearance alone. Signs may include chronic mouth breathing, snoring, open-mouth posture, narrow palate, crowded teeth, or a longer facial appearance. A pediatrician, ENT specialist, dentist, or orthodontist can help evaluate the cause.
Can mouth breathing change your jawline?
Chronic mouth breathing during childhood may affect jaw growth in some children, especially if it is related to long-term nasal airway blockage. The effect varies based on age, growth pattern, severity, and how long the issue continues.
Can enlarged adenoids affect teeth?
Enlarged adenoids can contribute to mouth breathing when they block nasal airflow. Long-term mouth breathing may affect tongue posture, palate shape, jaw growth, and tooth alignment in some children.