Can Invisalign Cause Ear Pain?

There are a few things that might be happening. First, with something new between your teeth, you may be clenching or grinding. This puts new stress on the jaw joints, the TMJ's. Right behind the TMJ's is a muscle to the ear, and inflammation near the jaw joints can affect the ear. Usually this is temporary, and the whole scenario is not common. Some ibuprofen until the pain subsides should be enough.

Yes, it is possible, but not really common. You're probably grinding into your new aligners while you're sleeping because, your jaw is not used to the feeling. I recommend taking some Advil at night before bed. Also, you can run your aligners under warm water before seating, them so they don't feel so tight. Good luck.