Abstract
James J Hilgers of california introduced the Pendulum Appliance in 1992 as mechanism for Class II non complaince treatment. The appliance uses a nance acrylic button for palatal anchorage and 0.036” TMA springs to deliver a light and continuous force to upper molars distalization without affecting palatal button [1]. Pendulum appliance can also be used for molar protraction both unilateral or bilateral by reversing the spring bend back and activating towards the molar to be protracted.
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