It is very important to have all of your dental check ups and work done before you do your impressions for the aligner treatment. Why? Getting work done during your aligner treatment may interfere with your ability to wear the aligners. If you can't wear your aligners for 20-22 hours a day, it may set back or interfere with your treatment process. Furthermore, depending on the type of work your dentist needs to do, your aligners may not fit as well, or at all afterwards. We cannot refund your aligners because you failed to do the necessary dental work before doing your impressions and aligner treatment. However, there are certain types of work that can be done during aligner treatment. Please check with our dental team to make sure you are ready for our aligner process.