* maintain appliance in the mouth * hold teeth in place, inhibiting any movement
3
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active
use placement of forces
* forces placed on a single teeth or groups of teeth * forces are generated within the appliance and specific oral structures to be corrected
4
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functional
use muscles of mastication and the oral cavities to crate conditions which will encourage the growth or change
* changes are not necessarily tooth movement, but rather changes to the supporting structures. * doesn’t use screw or springs to make changes, use positioning and stretching of muscles to produce that are required
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5
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fixed
appliance that cannot be removed by the patient
* Most common fixed appliances use molar bands * Could be distorted or damaged when removed
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6
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fixed/removal appliances
Rely on cemented bands for retention, but include attachments which allow the body of the appliance to be removed from the mouth without damage to the appliance
7
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removabale
Can be removed by the patient at any time
* Held in by retention, such as, clasp, suction, or acrylic placement
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Hawley Retainer
* removal * passive * use acrylic
9
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Wrap Retainer
* removal * passive * use acrylic
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Spring Retainer
* removal * active * use acrylic
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Schwarz
* removal * active * use screw * use acrylic
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Transverse
* removal * active * use screw * use acrylic
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13
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Quad-Helix
* Fixed * fixed/removal * active
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Hyrax
* fixed * active * use screw
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Bonded Hyrax/Expander
* fixed * active * use screw * use acrylic
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Haas
* fixed * active * use screw * use acrylic
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Activator
* removal * functional * can use screw * use acrylic
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Bionator
* removal * functional * can use screw * use acrylic
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Frankel
* removal * functional * can use screw * use acrylic
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Twin Block
* removal * functional * can use screw * use acrylic
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Herbst
* fixed * functional
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Nance
* Fixed * fixed/removal * passive * use acrylic
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Nord
* removal * active * use screw * use acrylic
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Gelb
* removal * functional * use acrylic
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Band and Coil Regainer
* Fixed * active * use open coil
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Band and Loop
* fixed * passive
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Lab Bent Lingual Arch
* fixed/removal * passive
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28
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Solder Lingual Arch
* fixed * passive
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3X3 Retainer
* fixed * passive
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Active Vertical Corrector
* removal * functional * Use screw * use acrylic
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Trans Palatal Arch
* fixed * Fixed/removable * passive - no loop * active - loop