Can acupuncture help TMJ disorder?

Unfortunately, there are more than 3 million people suffering TMJ disorder each year in United States.
Fortunately, acupuncture can help people with this issue, and effect is very good.
What is symptoms of TMJ disorder? 
Main symptoms are:
1. snapping of the joint which bothers you a lot
2. pain around the joint
3. locking of the joint which cause difficulty open or close joint 
How often is acupuncture needed?
It varies with conditions patients have. For most of cases, twice a week for 1-3 weeks. For people with other issues may take longer. Symptoms would be improved obviously even single session of acupuncture treatment.