1. accurate impression with alignate is taken and
poured up with orthodontic model stone
2. vertical lines are drawn on the teeth to lay brackets
3. brackets are loaded with a filled resin paste and
cured
4. individual positioning of tray with silicone is
prepared by applying it over the bracket teeth on
plaster model
5. place in warm water to dissolve the separating
indirect bonding
media
6. silicone tray is then removed from the plaster
model with brackets embedded in it
7. brackets are cleaned under running water to make
sure that pads have cured resin
8. enamel is etched, conditioned and unfilled resin is
applied
9. silicone tray with embedded brackets is then
positioned on teeth and bonded
,10/20/24, 7:51 PM ORTHODONTICS NBDE PART 2 NEWEST 2024 ACTUAL EXAM 105 QUESTIONS AND CORRECT DETAILED ANSWERS WIT…
equal and opposite forces: elastic band stretched
between two brackets produces equal and opposite
forces
one couple appliance: inserted into a bracket at one
end and tied as a point contact at the other.
types of appliances
two couple appliances: inserted into a bracket at each
end. both a couple and a force are produced at each
end. The magnitude of the couple is largest at the end
closer to the bend in the wire.
, 10/20/24, 7:51 PM ORTHODONTICS NBDE PART 2 NEWEST 2024 ACTUAL EXAM 105 QUESTIONS AND CORRECT DETAILED ANSWERS WIT…
Tissue borne: frankel functional appliance is the only
tissue borne functional appliance, which serves to
expand the arch by "padding" against the pressure of
the lips and cheeks on the teeth and postures the
mandible forward and downward
toothborne:
-activator: advances the madible to an edge to edge
position to induce mandibular growth for the
correction of class 2 malocclusion. Maxillary teeth are
prevented from erupting by the acrylic shelf while
mandibular posterior teeth are free to erupt. This
improves the deep bite seen in class 2.
functional appliances
-bionator: similar to the activator in function but its
examples
design is trimmed down version of the activator to
make it more comfortable to wear
-herbst: fixed or removable. metal rod and tube
telescopic apparatus is attached bilaterally to the
maxillary first molars and mandibular first premolars.
This helps to posture the mandibule forward and
induce growth.
-twin block appliance: 2 piece acrylic appliance
postures the mandible forward with help of occlusally
inclined guiding planes and bite blocks. the vertical
seperation of the jaws is also configued by the height
of the bite block. It postures the mandibular forward
to induce growth.
changes the posture of the mandible, holding it open
or open and forward. strech of the muscles and soft
functional appliances tissues creates pressures transmitted to the dental and
skeletal structures, moving teeth and modifying
growth. they are used to treat class 2 malocclusion
fixed appliance that consists of 4 helix (2 anterior, 2
quad helix posterior), used for posterior cross bite with digital
sucking habit
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