aligner therapy

Question 1

traditional tx modality

Answer 1

brackets and bands

Question 2

pts prefer what kind of tx looks wise>?

Answer 2

invisible (aligners)

Question 3

what was the first kind of aligner

Answer 3

tooth positioner

Question 4

Tooth Positioner
* Results based on?
* seq alignment?

Answer 4

• Results based on technician
  experience
• No sequential alignment
  available

Question 5

sequential alignment with invialign

Answer 5

new sets of aligners used as pt progresses thru tx

Question 6

when was invialign FDA approved

Answer 6

1998

Question 7

pros of invisalign

Answer 7

clear, transparent, removable

Question 8

standards of care thru ortho hx

Answer 8

• In the 20th century . Brackets and wires were the standard of care to treat the vast majority of malocclusions
• The 21st century has seen 3D CADCAM “become” the standard of care.
• Invisalign is the leading company in individual CAD CAM printing.

Question 9

invisalign age uses

Answer 9

used to be only adults but can now be used with teens/kids

Question 10

Turning Point of aligner tx

Answer 10

\
* CAD CAM technology allows for modelization of orthodontic movements (CAD)
* Fabricate sequential aligners corresponding to the desire treatments

Question 11

invisalign
* how old?
* Change/evolution
*improvements

Answer 11

• This technology is 25 years old
• Constantly changing and evolving
• Considerable improvements over the years- 3D controls and CBCT integration

Question 12

forces of clear aligners

Answer 12

Clear aligners push
* Clear aligners do not pull

Question 13

akligner tx in early 2000s

• alignment
• Limited correction of?
• vertical

Answer 13

• Minor alignment
• Limited correction of rotations
• No predictable vertical control

Question 14

simple force applied to crown thru aligners

Answer 14

• The line of action is at a distance from the center of resistance (1/2 root L)
• A moment of force is created by the force

Question 15

force applied thru the center of R causes?

Answer 15

translation

Question 16

force applied away from the center of R causes?

Answer 16

tipping

Question 17

are aligners on their own typicall enough? what can resolve this?

Answer 17

Aligners alone are not enough
* The majority of treatments may require the use of:
* Attachments
* Elastics
* Power ridges
* Bite ramps
* (G5 software + Smart track)

Question 18

G4 software allowed for?

Answer 18

adding attachments to the aligners to increase SA for action

Question 19

attatchments

defined?
roles?

Answer 19

Added to aligner surfaces to act as a point for forces
* Correct rotations
* Improve root movement
* Anchorage
* Extrusion

Question 20

precision cuts

Answer 20

Slits and cut outs of the aligners used for elastics
* Elastics:
* Class II mechanics
* Class III mechanics
* * Increase anchorage
* Correct midlines

Question 21

bite ramps
* Used to?
* Placed by?
* Levels? how?
* Less proclination of?

Answer 21

• Used to open the bite
• Placed by technician
• Level de curve of Spee by extruding and uprighting lower molars
• Less proclination of lower incisors

Question 22

how can we translate teeth if we cannot place for directly on the center of R?

Answer 22

usew of counter moments to cancel out tipping forces but not translational force

Question 23

Power ridges
force these are used for?
* To place?
* Placed on?
* on tooth?

Answer 23

Labio-lingual torque
* To place torque on teeth
* Placed on the aligner
* NOT on tooth surface

Question 24

Clear Aligner Therapy Advantages
* Individualized movement?
* sequence?
* Anchorage?
* vertical?
* improvements

Answer 24

• Individualize tooth movement in 3 planes of space
• Move teeth sequentially
• Anchorage control
• Disocclude teeth but still vertical control
• Continuous technological improvement

Question 25

Most common errors of aligners * Limiting the scope of the technique to:

Answer 25

* Limiting the scope of the technique to: 1. Intraoral scanning or impressions 2. Send case to the company 3. Automatic acceptance of Clincheck 4. Aligner delivery to patient 5. What to do when treatment does not proceed as planned?? 6. reliance on compliance

Question 26

# what do these icons mean?

Answer 26

number in rhomboid: IP reduction blue lines: precision cuts red spots: attatchments

Question 27

what force can be used to incline/extrude incisors

Answer 27

torque

Question 28

REMEMBER * Invisalign is a? * Abide to the same biological rules? * expansion? * proclination? * Orthodontic knowledge?

Answer 28

* Invisalign is a full orthodontic appliance * Abide to the same biological rules as conventional brackets * Do not over-expand * Do not over-procline * Orthodontic knowledge before treating pts.

Question 29

Conclusions * In less than 12 years, Invisalign has become a? * It has revolutionized the way? * This is only the?

Answer 29

* In less than 12 years, Invisalign has become a recognized orthodontic modality delivering quality orthodontic appliances. * It has revolutionized the way orthodontic treatment is delivered. * This is only the beginning! We will not stop “progress”