describe phase 1 orthodontic appliances
Passive management and/or preservation of space
Used to distalize permanent first molars which have shifted mesially due to premature primary tooth loss
Space Regainer
T/F space maintainer my reduces or eliminate need for further orthodontic intervention
true
This appliance maintains arch length and discourges mesial drift in primary teeth
Space Maintainer
Name 3 things a paedo partial denture can help with
1. restore function/aesthetics
2. prevent malocclusions
3. Prevent speech difficulty
used for correction of deep overbite or anterior crossbite
Hawley Bite Plate
used on people less than 13 years, activated 2 times per week, 1 quarter min turn each time.
Schwartz Appliance
An appliance that helps reduce thumb sucking and improve speech
habit appliance
T/F there is no appliance available to discourage lateral tongue thrust
False- lateral tongue thrust appliance .
improves vertical growth, prevents restriction on growth of madible
Hawley Bite Plate
Used when there is maxillary constriction
palatal expansion appliances
During development when is it best to use a Hawley bite plate?
Prior to maximum growth periods when possible
orthopaedic movement AKA
bone movement
how long does it take to "awaken" the midline palatal suture in an adult?
about 3 months
T/F more force is needed when doing a palatal expansion on a child
FALE- less force is needed
when using a Schwartz appliance how many mm does it more per month?
2mm per month
how much expansion can be expected using a Banded Hyrax weekly?
1.75mm-3.5mm
This separator has occlusal pads on posterior segments & dosen't require separators
Bonded Hyrax
Gains space through anterior advancement
Maxillary sagittal appliance (removable of fixed)
what does the Maxillary sagittal appliance move?
Premaxilla
this appliance anchors on permanent molars & does NOT split palate
W expander/ quad-helix
Maintains expansion after expanding the palate- used with active treatment.
Transpalatal or lingual arch (wire)
This appliance has acrylic pads covering occlusals to open bite
maxillary sagittal appliance
Used after expanding the premaxilla with a saggital appliance- CAN be used with active treatment
Nance Holding Arch
Used for mandibular arch expansion (removable or fixed)- has limited usage
Mandibular Schwartz Appliance
this prevents molars from drifting mesially or lingually & and maintains total arech langeth
transpalatal or lingual arch
Used when extractions indicated in mixed dentition analysis or expansion
Transpalatal or lingual arch
Keeps premaxilla in new anterior position and prevents collapse
Nance holding arch
Can be used to open or close a bite, patient compliance in wearing this appliance is essential for successful improvement. Is removed for food and brushing only.
Bionator
Helps with the growth of the mand, holds or retrudes the maxilla using buccal rods
Herbst Appliance
Appliance holds mand in an anterior position, guides eruption of the teeth into a more desirable bite- Can be used to open or close a bite
Bionator
2 separate appliance that are worn on the upper and lower arches at the same time.
Twin block
Holds or retudes the maxilla while enhancing the growth of mandible (cannot be removed by patient)
MARA appliance
Corrects class 2 skeletal to class 1 sketal, eliminates, deep over bite/curve of spee & improves the health of TMJ
Rick-a-Nator
When using a twin block, where are the bite blocks on the max & mand?
MX: over the molars
Mand: Bite blocks over the bicuspids
Uses the angle of the hard palate as an anchor to distalize molars (3-6 months)
Pendulum
Advances the mandible & reduces the submental crease & improve the profile
Rick-a-nator
Eliminates the need to wear a headgear or a functional appliance- palatal expansion is not a consideration
Pendulum
This incorperates hyrax and pendulum with expansion screw for arch widening- DISTALIZES molars
Pendex
Worn for 14-16 hours/day. Treatment reverses rapidly is not worn. Cervical/regular pull: RETRUDES MAX molars. Historically poor compliance
Cervical or high-pull headgear.
treats maxillary insufficiencies & treats mandibular prognathism
Petit Class 3 Face Mask (reverse head gear)
Active treatment for a permanent dentition is known as?
Phase 2
Used for deep overbite, to open bite (to ensure Px doesnt bite lower brackets off). Helps clear an anterior cross bite, allows tooth to move freely
Bite Turbos/Pads
maintains the teeth in the correct positions and allows for growth and development of the jaws and musculature
Hawley retainer/ (Retention definition)
can be made from a small amount of composite bonding material or metal/ceramic- can be cemented
Bite Turbos Pads
where are maxillary & posterior tubros placed?
ANT: anterior teeth
Post: Mand 1st molar buccal cusp
Aligns rotated incisors, used for orthodontic relapse
Spring retainer
Aids in positioning minor malocculsions, often used in cases of relapse or to finish a case or used as a nighttime retainer to retain position in class 2 cases.
Tooth positioner
invisible retainer/fragile but comfortable and convenient
Essix retainers