I had three sets of clear plastic retainers after my brace and each of them lasts for about only 9 months before cracking.
I got mixed information in this sub about how long they can last, from 3 months to 20 years. Why is the range so wide? Is that just because of quality, or there are actually different types of clear plastic retainers with different design lifespan?
selling 4th gen iPad Pro 11' (M2+128GB) + Apple Pencil + Logitech Combo Touch keyboard case for $700.
Bought because of tax-free week ads, used for less than 20 hrs. DM for more info.
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