Turns out, Invisalign is shockingly expensive ... you're supposed to wear them all day to get used to them. The retainers cost $99, and should be replaced every six months or so.
If you're having Invisalign teeth straightening treatment or wear other braces or retainers, you need to buy this nifty ...
“Your doctor will determine the cost of your treatment based ... are crafted using the same technology as your Invisalign ...
Secondly, at the time of writing it costs £79, which is a bit pricey ... Considering that indefinitely wearing night time retainers after completing Invisalign is highly recommended, you might ...