Do you wake up with jaw pain? Has your partner noticed you grinding your teeth at night? You likely have bruxism, one of the most common yet underdiagnosed disorders. The ClinicsJo Editorial Team reviews its causes, symptoms, and modern treatments.
What Is Bruxism?
Bruxism is involuntary clenching, grinding, or rubbing of teeth — either during sleep (sleep bruxism) or while awake (awake bruxism). The force can reach 250 kg on a single tooth — many times normal chewing force.
Causes
Psychological
- Chronic stress and anxiety.
- Depression.
- Sleep disorders.
- Type-A or competitive personality.
Medical
- Sleep apnea.
- Nocturnal GERD.
- Inner ear infections in children.
- SSRI antidepressants.
- Excess smoking, coffee, or alcohol.
Dental
- Malocclusion (bad bite).
- Missing teeth.
- Poorly fitting fillings or crowns.
Symptoms
- Grinding sounds at night (noticed by your partner).
- Morning jaw or ear pain.
- Frequent headaches, especially temporal.
- Flattened, worn teeth.
- Cracked teeth and broken fillings.
- Severe tooth sensitivity.
- Enlarged masseter muscle — face appears wider.
- Limited mouth opening in the morning.
- Clicks or popping in the temporomandibular joint (TMJ).
- Cheek lining ulcers from involuntary biting.
Diagnosis
The dentist relies on:
- Clinical exam — looking for flattened tooth surfaces.
- Jaw and headache symptoms.
- Partner's report.
- Occasionally, polysomnography in severe cases associated with sleep apnea.
Complications If Untreated
- Severe enamel erosion and loss of tooth height.
- Recurrent fractures and crown failures.
- Chronic TMJ inflammation.
- Chronic headaches.
- Gum recession.
- Sleep disturbances.
Treatment
1. Night Guard
The most common and effective solution. A custom plastic device worn at night absorbs grinding force and protects teeth and joint. Custom-made at a dental office (don't use OTC ones — they can disrupt your bite).
2. Stress Management
- Relaxation exercises and yoga.
- Mindfulness meditation.
- Cognitive Behavioral Therapy (CBT).
- Psychotherapy for severe cases.
3. Botox Injections
Injections into the masseter muscle every 4–6 months reduce muscle strength without eliminating function. Very effective for severe cases and also slims the face.
4. Orthodontics and Bite Correction
If malocclusion is the cause, orthodontics can solve it fundamentally.
5. Medications
- Short-term nighttime muscle relaxants.
- Sometimes low-dose antidepressants.
- GERD treatment if present.
Medical tip: Avoid caffeine or alcohol within 4 hours of bedtime — both significantly worsen nocturnal bruxism.
Bruxism in Children
Common in 15–30% of children, often resolves spontaneously with jaw growth. Causes include teething, stress, sleep apnea, and intestinal worms. Most cases don't need treatment, but if it persists past age 6 or causes problems, see a pediatric dentist.
Self-Care Tips
- Apply warm compresses to the jaw before bed.
- Gently massage jaw muscles in circular motions.
- Avoid prolonged chewing gum (fatigues muscles).
- Don't chew nails or pens.
- Sleep on your back rather than your side when possible.
- Stay well hydrated.
If you suspect bruxism, book an appointment with a dentist or TMJ specialist for diagnosis and the right guard.