While force systems produced by asymmetric outer bows have been studied extensively, the force systems produced by asymmetric inner bows have been overlooked.AIM: To analyse the forces acting on the maxillary first molars: when the size of one bayonet bend is increased when the point of application of the distalising force on the inner bow is moved to one side when one molar is displaced palatally.METHODS: Four FEM models of cervical headgear attached to maxillary first molars were designed in SolidWorks 2010 and transferred to an ANSYS Workbench Ver. BACKGROUND: Extra-oral traction appliances were introduced more than a century ago and continue to be used to produce orthopaedic and/or dental changes in the maxilla.
0 Comments
Leave a Reply. |