Philosophy of Aligner Therapy Flashcards
describe the tooth positioner
- results based on technician experience
- no sequential alignment available
in the 20th century, ______ were the standard of care to treat the vast majority of malocclusions
brackets and wires
in the 21st century ______ is the standard of care
CADCAM
_____ is the leading company in individual CAD CAM printing
invisalign
CAD CAM technology allows for ______ of orthodontic movements
modelization
describe aligner therapy in early 2000’s
- minor alignment
- limited correction of rotations
- no predictable vertical control
- clear aligners push
- clear aligners do not pull
what force is applied to the crown in aligner therapy
- the line of action is at a distance from the center of resistance
- a moment of force is created by the force
aligners alone are:
not enough
the majority of treatments may require the use of:
- attachments
- elastics
- power bridges
- bite ramps
what do attachments do
- correct rotations
- improve root movement
- anchorage
- extrusion
what do elastics do
- class II mechanics
- class III mechanics
- increase anchorage
- correct midlines
what do bite ramps do
- used to open the bite
- level de curve of spee by extruding and uprighting lower molars
- less proclination of lower incisors
how are bite ramps placed
by technician
what torque do power ridges do
labio lingual
what do power ridges do
place torque on the tooth
where are power ridges placed
on the aligner NOT the tooth surface
what are the advantages of clear aligner therapy
- individualize tooth movement in 3 planes of space
- move teeth sequentially
- anchorage control
- disocclude teeth but still vertical control
- continuous technological improvement
what are the most common errors
- limiting the scope of the technique to:
- intraoral scanning or impressions
- send case to the company
- automatic acceptance of clincheck
- ## aligner delivery to patient
invisalign is a _____ orthodontic appliance
full
abide to the same biological rules as:
conventional brackets
with aligners, do not:
over expand or over procline
