What Is Bruxism?
Bruxism is considered a form of jaw-muscle activity that may occur during sleep or wakefulness rather than a single disease entity. Sleep bruxism and awake bruxism may involve different mechanisms.
Tooth wear alone does not establish a diagnosis of active bruxism; clinical assessment is required.
Clenching & Grinding
Clenching may involve sustained or repetitive contraction of the jaw muscles. Grinding may involve rubbing the teeth together, which can produce sound or wear.
These activities may occur without awareness during the day or during sleep.
Possible Signs of Bruxism
Some people may experience morning jaw-muscle fatigue, head or facial discomfort, tooth wear, fractured restorations or jaw-joint symptoms.
Because these findings can also occur with other conditions, they should not automatically be attributed to bruxism without assessment.
Factors Associated with Bruxism
Bruxism does not have a single cause. Stress, sleep patterns, certain medications, lifestyle factors and neurological or sleep-related factors may contribute.
When investigation of contributing factors is needed, assessment by medical specialties outside dentistry may also be appropriate.
Night Guard
A night guard is a custom-made appliance that may be used in suitable cases to help protect tooth surfaces from wear and trauma.
A night guard should not be considered a method that removes the cause of bruxism; its purpose and duration of use are determined individually.
Bruxism Management Approaches
Management is based on the individual’s concerns and possible contributing factors. Oral appliances, behavioural awareness, modification of sleep-related habits or assessment by relevant medical specialties may be considered when appropriate.
The same approach is not used for every patient.