Mandibular Lower Expander

Mandibular (Lower) Expander What the Appliance Does The mandibular (lower) expander is spring activated. This appliance pushes the lower molars outward and backward. The sides of the lower arch also move laterally. Note: the lower expander has two halves. Activation … Read More →

Lower E-Arch (Arnold Expander)

Palate Expanders - The Most Important Orthodontic Appliance

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a) Original design of Williams' mandibular expander; (b) Modified

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