Pendulum Expanders The Pendulum expanders provide both distalization and rotation of the maxillary first molars with .032 TMA® wire. A midline expansion screw can be added for arch development. The design includes upper first molar bands with bands or rests placed on the first bicuspids.    * TMA is a registered trademark of ORMCO.   Pendulum An .032 wire provides light forces to distalize and rotate upper first molars. A Nance button provides anchorage. click for larger view   Pendex Upper arch development along with molar distalization is gained by adding an expansion screw in the acrylic. click for larger view     Snodgrass This appliance is used for maxillary arch expansion and molar distalization. A Hyrax expansion screw is used to first develop the maxillary arch. Once transverse movement is gained, the preactivated .032 TMA® wires are trimmed loose for molar rotation and distalization. click for larger view