Simply too little room to fit all the teeth in normally. Gum disease and decay extremely easy to develop.
Too much room between your teeth when you smile?
Can be due to missing or small teeth. Unattractive for some. Unstable in the long term.
Your upper teeth significantly overlap your lower teeth. Damaging to palate,excessive wear of teeth and potential jaw joint pain.
Your front upper teeth look behind your lower teeth. Something in the growth patterns of your jaws is out of sequence.Again damage to teeth and jaws.