I wrote this in December 2010:
There are currently two companies that market "clear braces", Invisalin and ClearCorrect. They both use computer designed clear appliances that fit snugly over the teeth. They are virtually invisible, unless you get really close to look.
I don't agree that they are useless or only for minor adjustments.
Just like traditional braces, they apply pressure to the teeth to gradually move them. With braces, you have wires, and braces that you have on 24/7 for the length of the procedure.
With clear braces, you insert these snug fitting appliances, and only remove them to eat and drink (anything aside water). Every 2-3 weeks, you will change appliances. Just like braces, each appliance gradually moves the teeth toward the desired position. You brush and floss after every meal and before you reinsert the appliances.
They are less noticeable, easier to keep clean, and makes brushing and flossing a simple task.
I suggest you do some research and maybe get a 2nd opinion from somebody that offers this option.
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OK, I am on Series #8. I visit the dentist every 6 weeks, and he check progress and gives me my next 2 appliances. Sometimes he has to make some minor shaping to my teeth to aid in the movement.
But, nothing beats the ability to take the appliances out to eat, brush, floss, and replace them.
One tip. I bought a small crochet hook, to aid in removal of the newest appliance. The first few days, they are very tight, especially how crooked my upper teeth are, so this tiny hook helps me get the removal started, and then I can grip it with my fingers.
I also soak them in a fizzy type denture cleaner every few days while I am having dinner.
Even after 6 months, nobody has ever noticed them without me first pointing them out.