A "Pendulum" appliance is a fixed appliance, similar in design to a Distal Jet, which is also used to move the upper molars back when the bite is off. It, too, can be used instead of headgear if the patient is a candidate for it. Pendulum appliances work a little different than a Distal Jet and sometimes require an additional appliance called a TPA after they are removed.

Example of Pendulum	Example of TPA