ortho appliances (dr. sun) Flashcards
bionator
- stimulate mandibular growth
- control tooth eruption
- removable
twin block
- stimulate mandibular growth
- can include an expander
- can add headgears
- removable
frankle appliance
- completely tissue borne
- buccal shields or lip pads to reduce cheek and lip pressure for expansion
- stimulate mandibular growth (lingual pads)
- removable
headgear types
cervical pull
high pull
combi pull
j hook- face bow connected to soldered hooks on AW
face mask and reverse pull head gear
for pre-adolescent patients exhibiting maxillary deficiency
force for active tooth movement is provided by_______.
finger springs
____, _____ and ______ provide anchorage and appliance retention
acrylic, labial bow, molar clasps
removable appliances for tooth movement are used for _____, _________ and __________.
palatal expansion, mandibular arch expansion, molar distalization
anterior bite plats
decrease overbite
posterior bite plates
increase overbite
Hawley retainer
removable
labial bow, clasps or rests on posterior teeth, acrylics
spring retainer
used for retention and minor tooth movement
varying designs
removable
tooth positioners
minor tooth movement and retention
fabricated on set-models
angles 4 major appliance systems
E arch
pin and tube
ribbon
edgewise
begg appliance
- modified ribbon arch
- auxiliary springs for root control
- wire and bracket very small with minimal friction, therefore quick tooth movement, but hard for root control
- not commonly used now
- fixed
edgewise appliances have ______ slots and ______ archwires for torque control
horizontal, rectangular
in a standard edgewise appliance, what is needed to compensate for horizontal position variations?
1st order bends
how are differences of tooth long axis angulation compensated for?
varying bracket slot tipping or second order bends
how are differences of tooth labial-lingual angulation compensated for?
- varying slot-bracket angle or differentially changing bracket thickness
- third order torque bends
how are differences of tooth horizontal position compensated for?
first order (in and out) bends
banding steps
tooth separation, band fitting, band cementation
how are brackets tied to archwires?
elastic and stainless steel ties
what are power chains used for?
space closure
what are elastics used for?
improving occlusion, moving impacted teeth, shift midlines etc.
open coil springs are used to _____.
open space, retract teeth, etc.
closed coild spring are used to _______.
maintain space
fixed appliances for class II correction
Herbst, MARA, forsus
T/F: Herbst and forcus may have skeletal growth modification effects
False, Herbst and MARA
lip bumper
arch expansion, molar distalization, incisor proclination
jasper jumper
class II correction
which expander give skeletal and dental expansion?
Hyrax palatal
which expander gives dental expansion only?
lower arch
quad helix w/ finger springs and W arch expanders are used in __________________ pts. helices are used for activation and increase _____ of tooth movement.
preadolescent and early mixed dentition, range
transpalatal arch and lingual holding arch
anchorage and space maintenance
heavier than regular arch wires
pendulum appliance
molar distalization
bonded to premolars
TMA wires with helices inserted to molars
anchorage from palate
habit appliance
tongue crib to correct tongue or finger habit
heavy stainless steel wire
anchored on molars
removable appliances mainly produce tooth _____.
tipping
fixed appliances can produce ______ and _____.
bodily tooth movement, tipping
which type of appliances (remov. or fixed) has root movement control?
fixed
