Bruxism

Overview

Bruxism is a repetitive jaw muscle activity characterized by clenching or grinding of teeth and/or bracing or thrusting of the mandible. It can occur during sleep (sleep bruxism) or while awake (awake bruxism). This condition can lead to significant dental damage, jaw pain, and other complications if left untreated.

[Clinical images showing tooth wear patterns, worn night guard, and TMJ anatomy]

Types of Bruxism

Sleep Bruxism

Occurs: During sleep, unconsciously

Characteristics: Grinding, clenching, gnashing

Awareness: Patient usually unaware

Diagnosis: Often reported by sleep partner

Associated: Sleep disorders, stress

Awake Bruxism

Occurs: During waking hours

Characteristics: Mostly clenching, rarely grinding

Awareness: Patient may be aware

Diagnosis: Self-reported or observed

Associated: Stress, anxiety, concentration

Causes

Clinical Features

Tooth Wear: Flattened, chipped, or worn teeth
Jaw Pain: Soreness in jaw muscles and TMJ
Headaches: Morning headaches, especially temporal
Tooth Sensitivity: Increased sensitivity to hot/cold
Earache: Referred pain to ears
Facial Pain: Muscle fatigue and tension
Sleep Disruption: Poor sleep quality for patient/partner
Grinding Sounds: Audible grinding during sleep

Complications

Prevention

Treatment Options

Prognosis

The prognosis for bruxism varies depending on the underlying cause and patient compliance with treatment. Many cases can be successfully managed with night guards and stress reduction techniques. Early intervention is important to prevent severe tooth damage and TMJ complications. Children often outgrow bruxism, while adult cases may require long-term management.