Bruxism: Causes, Types & Prevention

Written by Medicover Team and Medically Reviewed by Dr Vutala Prathyusha

Bruxism is a condition characterized by the involuntary grinding or clenching of teeth, often occurring during sleep or while awake. It can lead to various symptoms and complications, including tooth pain and other dental issues. This article explores bruxism in detail, including its symptoms, causes, and treatment options.

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Common Symptoms of Bruxism

Bruxism can manifest through several noticeable symptoms:

  • Tooth Pain: Persistent pain in the teeth due to excessive grinding or clenching.
  • Jaw Pain: Discomfort or soreness in the jaw muscles.
  • Headaches: Frequent morning headaches are common among those with bruxism.
  • Worn Tooth Enamel: Noticeable wear on the surfaces of the teeth.
  • Sensitive Teeth: Increased sensitivity to hot, cold, or sweet foods and beverages.

Causes of Bruxism

There are many reasons why a person may grind their teeth. Several factors can also increase a person's risk of bruxism, including:

  • Age: Children are more likely to grind their teeth than adults. Sleep-related bruxism affects 15% to 40% of children versus 8% to 10% of adults.
  • Emotions: Frustration, stress, tension, anxiety, and repressed anger are potential culprits.
  • Genetics: Bruxism runs in families. Children are nearly twice as likely to develop it if a parent has it.
  • Medication: Certain medications used to treat psychiatric disorders, including SSRIs like Prozac, Zoloft, and Paxil, may trigger bruxism.
  • Personality: Traits such as neuroticism have been associated with bruxism.
  • Substance Use: Use of cigarettes, caffeine, alcohol, and recreational drugs can increase risk.

Additionally, bruxism has been linked to medical conditions like:

  • ADHD
  • Dementia
  • Epilepsy
  • GERD
  • Night terrors
  • Parkinson's disease
  • Sleep apnea and other sleep-related disorders

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Reason Behind Bruxism

Understanding the reasons behind bruxism is crucial for effective management. Key reasons include:

  • Psychological Factors: Stress and anxiety
  • Physical Factors: Misalignment of teeth or jaw issues

When to See The Specialist for Bruxism

See a dentist immediately if you experience:

  • Difficulty eating or opening your mouth
  • Persistent jaw pain or headaches
  • No improvement with self-care after several weeks

TMJ disorders may require X-rays, a mouthguard, or other interventions. Surgery is a last resort.

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Diagnosis of Bruxism

Bruxism is frequently diagnosed during a dental exam. The dentist may:

  • Check for worn or broken teeth
  • Look for damage to the inside of the cheek
  • Assess the tenderness of jaw muscles
  • Examine the temporomandibular joint (TMJ)
  • Take an X-ray to check for underlying bone damage

Long-Term Effects of Bruxism

Untreated bruxism can result in serious long-term consequences affecting oral health, facial structure, and quality of life:

  • Chronic Tooth Wear and Damage: Increases the risk of cavities, infections, and tooth loss.
  • Tooth Sensitivity and Decay: Erosion of enamel leads to exposed dentin and heightened sensitivity.
  • Gum Recession and Periodontal Issues: Increased pressure on gums can loosen teeth and worsen gum disease.
  • Temporomandibular Joint Disorder (TMD): Leads to jaw pain, stiffness, and difficulty moving the jaw.
  • Facial Muscle Pain and Jaw Dysfunction: Causes long-term fatigue, soreness, and misalignment.
  • Headaches and Migraines: Muscle tension radiates to the temples and neck.
  • Sleep Disruption: Nighttime grinding impacts sleep quality.
  • Changes in Facial Appearance: Alters jawline due to worn-down teeth and muscle overuse.

Complications of Untreated Bruxism

Complications from untreated bruxism include:

  • Tooth Damage: Sensitivity, fractures, thinning, or tooth loss.
  • Jaw Problems (TMJ Dysfunction): Pain, clicking, or locking of the jaw.
  • Headaches and Migraines: Tension headaches, especially around the temples.
  • Jaw and Muscle Pain: Fatigue, tightness, and pain in the face, neck, or shoulders.
  • Shifting or Looseness of Teeth: Pressure from grinding can lead to gum recession and tooth shifting.
  • Sleep Disturbances: Grinding noise or discomfort disrupts sleep.
  • Tooth Sensitivity: Enamel loss exposes dentin, increasing sensitivity.
  • Damage to Dental Restorations: Fillings, crowns, and veneers may crack or break.
  • Aesthetic Changes: Alters teeth shape and facial profile.

Treatment and Management of Bruxism

Managing bruxism involves several approaches:

  • Bruxism Mouth Guard: Custom-fitted guards protect teeth and reduce grinding impact.
  • Stress Management: Relaxation exercises or therapy to manage stress.
  • Dental Correction: Orthodontic treatments to fix misaligned teeth or bite issues.
  • Medication: In some cases, muscle relaxants or medications may help reduce tension.

Preventions of Bruxism

While no treatment can completely stop bruxism, preventive measures include:

  • Wearing a night guard to protect teeth and reduce pressure
  • Managing stress through counseling, exercise, or relaxation techniques
  • Reviewing medications with a doctor for potential side effects
  • Avoiding caffeine, alcohol, and tobacco
  • Not chewing on pens, pencils, or excessive gum
  • Training yourself to avoid clenching, rest your tongue behind your upper front teeth
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Frequently Asked Questions

Yes, bruxism is common in children, especially between ages 3-10. It is often outgrown by adolescence. Causes may include stress, sleep disorders, misaligned bite or missing teeth. If severe, it can lead to headaches, jaw pain and tooth damage.

Sleep bruxism is considered a sleep-related movement disorder. However, awake bruxism is not considered a syndrome. Bruxism may be associated with other disorders like TMD (temporomandibular joint disorder) or sleep apnea.

The exact reason for bruxism is not fully understood. It may be a response to stress or anxiety, a sleep disorder, misaligned bite, missing teeth, medications, alcohol or smoking. Certain medical conditions like Parkinson's disease can also contribute.

Custom-fitted mouth guards or splints are very effective in protecting teeth from the effects of bruxism. They act as a cushion between the upper and lower teeth, preventing tooth damage and reducing symptoms like jaw pain and headaches. However, they do not stop the grinding itself.

Signs include teeth grinding, jaw pain, morning headaches, worn teeth, or tight jaw muscles, especially after waking up.

Yes, mild bruxism may resolve without treatment, especially if it's stress-related or in children, but persistent cases may need care.

Chronic bruxism can lead to tooth damage, jaw disorders, and headaches if left untreated, so early intervention is important.

Yes, teeth grinding can strain jaw muscles and nerves, often leading to tension headaches or pain around the temples.

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