I am going into my second year of college and first got invisalign when I was a sophomore in high school.
After weeks of wearing the trays, my mouth literally locked open one night from all the tension and from there on out I have had a constant cracking that occurs every time I open my mouth. 12 weeks of invisalign and this is what I get: TMJ, thousands of dollars spent on a TMJ specialist, and I am currently going to physical therapy three times a week. Also, my bite is completely off center. Not to mention my teeth have shifted back to their original position.
All in all it was a complete waste of money, pain, and time.