TMD, Occlusion & Bruxism
Bite problems (malocclusion)
When upper and lower teeth do not meet the way they ideally should.
Meaning
Poor bite fit
Types
Over, under, crossbite
Effects
Wear, chewing strain
Treatment
Orthodontics
Overview
Malocclusion means the teeth do not line up well when you bite together. Common types include an overbite, underbite, crossbite or an open bite where the front teeth do not meet.
A poor bite can make some teeth wear faster, affect chewing, and sometimes strain the jaw. Orthodontic treatment, and occasionally surgery, can improve how the teeth fit.
What to know
- Upper and lower teeth meet poorly
- Includes overbite, underbite and crossbite
- Can cause uneven wear and chewing issues
- Often runs in families
- Treated with orthodontics, sometimes surgery
Common questions
What causes a poor bite?
Often inherited jaw and tooth size, sometimes habits in childhood.
Does it need treating?
Mild cases may not. Others benefit from orthodontics.
Can a bad bite wear my teeth?
Yes, uneven contact can wear or chip teeth over time.
Is surgery always needed?
No. Surgery is reserved for larger jaw differences.
When is the best time to treat?
Many problems are easier to manage during growth, but adults can be treated too.
Related topics
Why orthodontics?
Straightening teeth can improve how your bite works, looks and stays clean.
Crowded & crooked teeth
When teeth overlap or twist because there is not enough room in the jaw.
Equilibration (bite adjustment)
Carefully reshaping tooth surfaces so your bite meets more evenly.
Surgically-facilitated orthodontics
Combining minor surgery with braces to speed or assist tooth movement.
Dr Rick Iskandar · Reviewed June 2026