Understanding Teeth Grinding (Bruxism)
Teeth grinding, or bruxism, is the involuntary clenching or grinding of teeth, often during sleep. It can also occur during the day due to stress, anxiety, or TMJ disorders.
Signs of bruxism include:
Worn or flattened teeth
Jaw pain or stiffness
Headaches and facial discomfort
Tooth sensitivity
What is Abfraction?
Abfraction is the loss of tooth structure at the gum line caused by excessive flexing of the teeth under pressure. Unlike cavities, abfraction is a mechanical rather than bacterial issue and often appears as V-shaped notches near the gum line.
How Teeth Grinding Causes Abfraction
When teeth grind or clench:
Excessive force is applied to the teeth
Teeth flex at the gum line, causing enamel and dentin to fracture over time
This leads to notches, sensitivity, and increased risk of further dental damage
Other contributing factors include malocclusion (misaligned bite) and TMJ dysfunction.
Effects of Abfraction
Tooth Sensitivity: Exposed dentin causes pain with hot, cold, or sweet foods
Enamel Loss: Weakens teeth and increases fracture risk
Aesthetic Concerns: V-shaped notches can affect smile appearance
Increased Risk of Decay: Weakened areas are more susceptible to cavities
TMJ Stress: Abfraction often indicates underlying bite issues that strain jaw muscles
Treatment Options for Teeth Grinding and Abfraction
1. Custom Night Guards
Protect teeth from further grinding damage
Reduce pressure on teeth and jaw muscles
2. Composite Bonding
Fills abfraction notches
Restores tooth shape and protects exposed dentin
3. Bite Adjustment
Corrects misaligned bite to reduce excessive forces on teeth
Can involve minor reshaping or orthodontics
4. TMJ Therapy
Addresses underlying jaw muscle tension
Reduces bruxism-related stress on teeth
5. Stress Management
Relaxation techniques and lifestyle changes can reduce daytime grinding
Preventing Further Damage
Wear a custom night guard consistently
Maintain regular dental check-ups to monitor abfraction
Address TMJ and bite issues early
Practice stress-reduction techniques
Contact Pain Free Dentists Sydney
If you notice tooth notches, sensitivity, or jaw pain, early intervention can prevent further damage and restore your smile.
Call (02) 9558 8988, email info@painfreedentistsydney.com.au, or book online to schedule a consultation.