Can Invisalign crack my crowns?

Thank you for posting your question.  Wearing an Invisalign aligner too long should not cause any problems.  Move on to the next aligner and let your dentist know.  Try to keep changing the aligners on time so that you can finish sooner rather then later.  Hope this helps.  Good Luck!

Yes, it is absolutely okay to change your aligner one night earlier as long as you have worn it enough hours for the time you had to and as long as you don't make it to a habit of changing others earlier every time.

It is my advice to upload pics so i can guide u better. by your description i feel issue is with occlusal plane. 

It is difficult to say anything without seeing your case. it is my request to upload pics so i can guide u better. if one can use standard debonding protocol with polishing thn no chances of any kind of damage to tooth surface.

Teeth can shift positions within a few days and will continue to move over time. How quickly or how much they will move is different from person to person. Consistent retainer wear is the only way to keep teeth in the position they were in following orthodontic treatment. Upon treatment...

Hi Jess, thank you for a wonderful question. Lots of people have this question in their mind but hesitate to ask. We try to put a lingual bonded retainer as a long term retention solution if there are some severe rotation movements corrected or gaps closed in front teeth. To give it extra...