My top retainer (from dentist) lasted over a decade but then broke, so I got sporting smiles since it was so less costly. I didn't realize the lack of durability. Only 3 years later it broke - I have no idea when or hell (meanwhile, my bottom retainer is still perfectly fine) and sporting smiles takes a week to get back to me to tell me they can't do anything:
Hi,
We are unable to assist you as we would no longer have your impressions on file, as we only keep them on file for one year. Our warranty period is 30-days from the final ship date.
Lame AF! I won't be using them again!
LASTED 3+ YEARS! 3 Years is a great amount of time to have a retainer. The life span of a clear retainer is about 1 year. If you google life span of clear retainer you will see that. That last molar can always just be trimmed off the retainer can still be used for a while. Not sure what you expected us to do on an order over 3+ year retainer order. This should be a good review on getting a great fitting retainer that lasted 3 years for less than 100$.