Why does one Invisalign elastic (rubber band) feel tighter than the other?

Dear BraceShake,Thank you for posting your question on Real Self. I will do my best to answer your question with the information given. I recommend continuing treatment as prescribed by your doctor and allow your teeth sometime to adjust. If it persists or you feel discomfort, schedule an appointment to address your concerns. There are multiple reasons why one side may feel tighter.I hope that this helps and good luck!Best,Dr. Jenn

I would recommend you  discuss this with your doctor, but in my experience the distance that teeth needing to be shifted by elastics could be different from one side to the other. This means that one rubber band feels tighter than the other.  There usually 2 sizes of elastics, if you are using the longer ones, then maybe worth switching to the tighter elastics on the left, and stay with same size on the right.  If these are  the smallest elastics, then don't worry, it's probably programmed that way and still moving as long as your trays are fitting good (tracking),  and you are wearing your trays and elastics 22 hrs /day.  Your doctor will check for you and confirm with ClinCheck movie simulation of your treatment.

Sounds like the correction is still not there on one side so likely will feel a little different.  The side that has not completed its movement will feel pressure and the side where the movement programmed into the aligner has happened will feel less if any.  Don't worry.  Keep wearing your rubber bands