The Hidden Dangers of Tooth Grinding

Quick Summary

What You Need To Know

Tooth grinding (bruxism) is more than just a bad habit; it can cause severe dental damage and is often linked to underlying issues like sleep apnoea or stress.

Key Takeaways

Bruxism can cause irreversible damage to tooth enamel.
It is frequently a subconscious response to airway restriction during sleep.
Night guards can protect teeth but do not cure the underlying cause.
Comprehensive assessment is needed to identify the root issue.

Who Is This For?

Anyone who wakes up with jaw pain, notices their teeth are getting shorter, or has been told they grind their teeth at night.

Typical Outcome

Protection of the teeth from further wear and a targeted approach to addressing the root cause, such as airway optimization.

Many people grind or clench their teeth, a condition known as bruxism, often without realizing it until a dentist points out the damage. While stress is a common culprit, emerging research shows that nocturnal tooth grinding is frequently linked to a much more serious issue: airway restriction and sleep-disordered breathing.

What Is It?

Bruxism involves the involuntary gnashing, grinding, or clenching of teeth. It can happen during the day (awake bruxism) or at night (sleep bruxism). Sleep bruxism is considered a sleep-related movement disorder.

Why Does It Matter?

The forces exerted during sleep bruxism are incredibly high—much greater than when chewing food. Over time, this can lead to severe tooth wear, fractured teeth, failing dental restorations, and chronic jaw (TMJ) pain. Furthermore, if the bruxism is a symptom of sleep apnoea, leaving it untreated means the underlying health risks of poor sleep are also ignored.

Signs & Symptoms

Flattened, fractured, chipped, or loose teeth
Worn tooth enamel, exposing deeper layers of the tooth
Increased tooth pain or sensitivity
Tired or tight jaw muscles, or a locked jaw
Dull headache starting in the temples

Common Causes

Sleep-disordered breathing (e.g., Obstructive Sleep Apnoea)
Stress and anxiety
An abnormal bite (malocclusion)
Certain medications or lifestyle factors (caffeine, alcohol)

Diagnosis & Assessment

Diagnosis involves a clinical examination to check for signs of wear and muscle tenderness. We also look closely at the airway and may recommend a sleep study if we suspect the grinding is related to sleep apnoea.

Treatment Options

Custom-fitted night guards to protect the teeth from damage
Addressing underlying sleep apnoea with oral appliances or other therapies
Orthodontic treatment to correct bite alignment
Stress management techniques

Benefits

Prevention of further tooth wear and damage
Relief from jaw pain and headaches
Improved sleep quality if underlying airway issues are addressed

Risks & Limitations

A night guard alone may protect the teeth but won't stop the grinding or treat underlying sleep apnoea.

Frequently Asked Questions

Why do I only grind my teeth at night?

Sleep bruxism is often a subconscious response by the brain to open a restricted airway. When the airway collapses during sleep, the brain signals the jaw muscles to contract and push the jaw forward to resume breathing, resulting in grinding.

Will my teeth grow back if they are worn down?

No, tooth enamel does not grow back. Worn teeth must be restored using dental materials like composite bonding, veneers, or crowns to restore function and aesthetics.