Invisalign Clinical (Gardner)

Question 1

What is the key to have with Invisalign?

Answer 1

Backup plan

Question 2

Does an orthodontist look at every invisalign case before sending it to the General dentist for approval?

Answer 2

No

Question 3

If a general dentist does Invisalign, to what standard is the general dentist held?

Answer 3

The orthodontist

Question 4

What case is good to start with?

Answer 4

Mild crowding (Class I mechanics) no skeletal problems

Question 5

Should invisalign be used for canine expansion, particularly in the mandible?

Answer 5

No

Question 6

Is invisalign indicated if a retainer would work?

Answer 6

No

Question 7

Can invisalign be used to correct skeletal discrepancies?

Answer 7

No

Question 8

What is the only ortho extraction that is compatible with invisalign?

Answer 8

Mandibular incisors only

Question 9

If a patient is not compliant, are they a good candidate for invisalign?

Answer 9

No

Question 10

Is it easy to correct deep bites with invisalign?

Answer 10

No

Question 11

Can invisalign be used to correct an open bite?

Answer 11

No

Question 12

Which is less expensive, more accurate, and able to accomplish more comprehensive movements: braces or invisalign?

Answer 12

Braces

Question 13

How many sets of aligners should you almost always use?

Answer 13

2 sets (the second one is the refiner)

Question 14

When can invisalign be done with surgery: pre- or post-surgery?

Answer 14

1. Presurgery

2. Post surgery must go to standard braces

Question 15

What can be done to allow the aligner to grab the tooth and bring the roots together?

Answer 15

Lean the tooth

Question 16

What can be done virtually to plan the aligner to move the teeth closer and close space?

Answer 16

Virtual C-chain

Question 17

Why would bringing the roots together be a concern in ortho?

Answer 17

Can use that to close a dark triangle

Question 18

What else can be used as an adjunct to close a dark triangle?

Answer 18

Interproximal reduction

Question 19

What is the hygiene for the aligner?

Answer 19

1. Ultrasonic cleaner
2. Place in water when eating
3. Clean with a toothbrush before adding toothpaste

Question 20

What is a concern when trying to correct crowding by proclining the teeth?

Answer 20

Patient must have adequate attached keratinized attached gingiva

Question 21

What are some ways to correct crowding?

Answer 21

1. Interproximal reduction
2. Expansion (not lower canines)
3. Proclination (watching the attached gingival)
4. 4xEXT, braces 1st premolar to molars, close the space, anterior teeth will move into the space
5. Air Rotor stripping

Question 22

What is a concern when doing Air Rotor Stripping to make room to correct crowding?

Answer 22

After remove spacers ensure you do not create a ledge or a food trap

Question 23

When doing expansion (Transverse corrections) how much more should you expand?

Answer 23

1/3 more than you need

Question 24

What are methods for doing sagittal movements?

Answer 24

Rubber bands attached to the aligners or TADS for a single arch

Question 25

When should sagittal movements be done in invisalign treatment?

Answer 25

Close to the beginning of treatment

Question 26

What is a good thing about the early posterior contact with invisalign with respect to closing an anterior open bite?

Answer 26

The early posterior contact will intrude the molars and naturally close the anterior open bite

Question 27

What can be done if the patient has a forward tongue position contributing to an open bite (Vertical correction)?

Answer 27

Use a cross arch rubber band to remind tongue to stay back

Question 28

What would you like to extrude to open a deep bite?

Answer 28

The premolars

Question 29

What can be done to the aligners to help posterior teeth erupt a bit to open a deep bite?

Answer 29

Put turbos or elastics on the linguals of the anterior aligners that opens up space for posteriors to erupt into

Question 30

What can be used if there are tracking problems?

Answer 30

Have the patient chew whenever you put the aligner in.

Question 31

What are 2 movements that require attachments?

Answer 31

1. Rotations | 2. Extrusions

Question 32

How are attachments placed?

Answer 32

In the direction you want to move the tooth

Question 33

Should attachments be placed in the first visit (i.e. with the first set of aligners?

Answer 33

No. Give them 2 trays (1 month) then place attachments at one month visit

Question 34

Is there any urgency to replace an attachment if it falls off?

Answer 34

No, unless you are rotating teeth

Question 35

What is used to do rotations in invisalign?

Answer 35

Place buttons on buccal and lingual, then use a band to rotate

Question 36

What is common in the rotation of canines pretreatment?

Answer 36

Canines usually rotated in the same direction

Question 37

What is caused by wearing aligners well, and how can it be corrected?

Answer 37

Posterior open bite is caused. At the end, cut the tray distal to the lower canines and give them 2 weeks.

Question 38

Who diagnoses the invisalign case?

Answer 38

The dentist, NOT the lab tech

Question 39

What is the key with invisalign, besides starting easy?

Answer 39

Have a backup plan, especially if the patient does not wear the aligners