Hello there,I would definitely advise not going back to tray #14. You should contact your dentist; he/she will likely tell you to remain in tray #15 an extra two weeks or tell you not to worry about it and continue to #16. I have had patients skip a tray before and I usually have...
Hello there, This seems like a simple case of left over bonding material on your teeth. If the surface feels rough, then your dentist should be able to just remove the excess bonding material and have his/her hygienist polish your teeth to a point where they feel very smooth....
Every Invisalign case is unique, but I can tell you that most of them last about a year or less. If your case is severe enough, then it can last two years or more. I would suggest just giving your dental office a call and asking them. They should be able to research that...