Invisalign FAQAm I too old for Invisalign?Does NHS cover Invisalign?Is Invisalign painful at first?How long does Invisalign last?What are the downsides of Invisalign?Are braces cheaper than Invisalign?Which is faster, braces or Invisalign?Do I really have to wear Invisalign 22 hours a day?What is the failure rate of Invisalign?Which teeth are hardest to move with Invisalign?What happens if you don’t brush your teeth after every meal?What foods should you avoid with Invisalign?Can I drink coffee/tea/wine with my trays in?Will I need refinements?Are attachments really that noticeable?