This fixed metal expander (also available as a fixed/removable) is capable of applying forces in numerous directions depending upon how it is activated.
The four helical loops (two in the first bicuspid region and two in the second molar region) can be activated in unison or individually to achieve the desired results. The appliance is soldered to bands on the first molars and lingual arms run from the bands forward to the cuspids or first bicuspids as desired.
Orthodontic Retainer Model features excellent demonstration and teaching tool for Orthodontic Dental Schools and Students who desired to learn, practice Orthodontic Techniques in Dental School, at home, on the go. This techniques a mast foundation of future professional orthodontic practice.