Orthodontics
Crowded & crooked teeth
When teeth overlap or twist because there is not enough room in the jaw.
Cause
Too little jaw space
Concern
Harder to clean
Fix
Braces or aligners
Extra
Sometimes extractions
Overview
Crowding happens when teeth are too big for the space available, so they overlap, twist or sit out of line. It can be mild or quite noticeable.
Crowded teeth can be harder to clean, which may raise the risk of decay and gum disease. Orthodontic treatment can create space and line the teeth up.
What to know
- Caused by too little room for the teeth
- Overlapping teeth can trap plaque
- May make cleaning harder in tight spots
- Braces or aligners can correct it
- Sometimes a tooth is removed to make space
Common questions
Why are my teeth crowded?
Often the teeth are simply larger than the space in the jaw.
Does crowding cause cavities?
Not directly, but tight, overlapping teeth can be harder to clean.
Can crowding be fixed without braces?
Mild cases may suit aligners, but it depends on your bite.
Will I need teeth taken out?
Sometimes, to create enough room. Your dentist will advise.
Can crowding come back?
Yes, which is why retainers are used after treatment.
Related topics
Why orthodontics?
Straightening teeth can improve how your bite works, looks and stays clean.
Clear aligners (Invisalign)
Clear, removable trays that gently move teeth a little at a time.
Palatal expansion
Widening a narrow upper jaw to make more room and improve the bite.
Retainers
Retainers hold your teeth in place after braces or aligners.
Dr Rick Iskandar · Reviewed June 2026