AIRWAY • TONGUE POSTURE • ORTHODONTICS

Why Does My Child Grind Their Teeth at Night?

Many parents become concerned when they hear their child grinding their teeth at night. Sometimes grinding is mild and temporary. Other times, it may be a sign that the body is adapting to changes in breathing patterns, jaw development, tongue posture, or bite balance.

After more than 20 years in orthodontics, Dr. Pejman Nasibi has learned that grinding is not always just about the teeth. In many children, it can be connected to mouth breathing, tongue posture, airway concerns, narrow jaw development, oral habits, or the way the teeth and jaws fit together.

At My Orange County Orthodontist, we believe orthodontics goes far beyond straight teeth. Our goal is to understand the root cause of orthodontic problems to help create healthier, more stable long-term results.

Is Teeth Grinding Normal in Children?

Mild grinding can sometimes occur during growth and development, especially while adult teeth are erupting and the bite is changing.

However, persistent or heavy grinding that causes tooth wear, jaw tension, headaches, or sleep concerns should be evaluated more carefully.

Common Causes of Teeth Grinding

• Mouth breathing
• Narrow palate development
• Low tongue posture
• Crossbite or bite imbalance
• Stress or nervous system stimulation
• Poor sleep quality
• Allergies or chronic congestion
• Tongue thrust swallowing patterns
• Changes during eruption of adult teeth

Why Tongue Posture Matters

One of the most overlooked areas in orthodontics is tongue posture.

The tongue is designed to rest gently on the roof of the mouth — not against the teeth or low on the floor of the mouth.

When tongue posture is low, it may contribute to narrow jaw development, crowding, mouth breathing, unstable bites, and even orthodontic relapse later in life.

In many patients, the tongue can be stronger than braces or Invisalign if the underlying habit is never corrected.

Can Mouth Breathing Cause Teeth Grinding?

In some children, mouth breathing may contribute to poor sleep quality, muscle tension, jaw positioning changes, and unstable oral posture patterns.

Children who breathe primarily through their mouth may also develop narrow jaw growth, low tongue posture, dry mouth, and increased orthodontic crowding over time.

Although every child is different, these patterns are commonly evaluated during orthodontic and airway-focused examinations.

Can Teeth Grinding Damage My Child’s Teeth?

Occasional mild grinding may not cause serious problems. However, heavy or persistent grinding can sometimes lead to:

• Flattened or worn teeth
• Tooth sensitivity
• Jaw discomfort or muscle tension
• Difficulty sleeping
• Headaches
• Increased pressure on developing teeth and jaws

Signs We Evaluate During an Orthodontic Consultation

• Open mouth posture
• Speech concerns
• Mouth breathing
• Snoring
• Narrow palate development
• Crossbite
• Tongue thrust swallowing
• Grinding wear on teeth
• Relapse after braces or Invisalign
• Low tongue posture
• Airway and nasal concerns on CBCT imaging

If you are concerned about your child’s grinding, mouth breathing, tongue posture, or jaw development, you can schedule a free orthodontic consultation at our Anaheim Hills orthodontic office.

Why Some Orthodontic Treatments Relapse

This is one of the most common things adult patients tell us after previous orthodontic treatment.

In many cases, teeth were aligned successfully, but the underlying oral habits, tongue posture, mouth breathing patterns, or swallowing habits were never addressed.

If the root cause is not corrected, orthodontic relapse becomes much more likely over time.

Can Orthodontic Treatment Help Teeth Grinding?

Orthodontic treatment alone does not directly “cure” grinding. However, identifying contributing factors such as bite imbalance, narrow jaw development, tongue posture, mouth breathing, or airway concerns may help improve long-term stability and comfort.

Some children benefit from early orthodontic evaluation to monitor jaw growth, oral habits, and bite development before more significant problems develop later.

Does Teeth Grinding Mean My Child Needs Braces?

Not necessarily.

Some children grind temporarily during normal growth and development. Others may benefit from monitoring, early orthodontic guidance, or treatment if significant crowding, bite imbalance, jaw development concerns, or airway-related issues are present.

Every child develops differently, which is why personalized evaluation is important before recommending treatment.

Orthodontics Beyond Straight Teeth

At our Anaheim Hills orthodontic office, we focus on much more than cosmetic alignment.

• Facial harmony
• Healthy jaw development
• Airway awareness
• Bite stability
• Tongue posture
• Long-term retention
• Healthy oral habits

This is what we mean by orthodontics beyond straight teeth.

Why Early Evaluation Can Matter

Many parents assume orthodontic treatment only begins once all adult teeth erupt.

However, some orthodontic and airway-related concerns are easier to identify earlier while the jaws are still developing.

In certain situations, early intervention may help improve:

• Jaw development
• Bite balance
• Space for erupting teeth
• Oral habits
• Mouth breathing patterns
• Long-term orthodontic stability

Not every child requires early treatment, but many benefit from early evaluation and monitoring.

A Personal Perspective as a Father and Orthodontist

As both an orthodontist and a father of four, Dr. Nasibi understands personally how difficult oral habits and tongue posture correction can be.

That personal experience has created a more compassionate, patient-centered approach to care for families navigating similar challenges.