ClearCorrect

Question 0

How many patients in ortho today are adults?

Answer 0

1 in 5. In other words, we need to make sure that we are talking to our adult patients about orthodontics!

Question 1

What percentage of patients in braces could be using a clear aligner?

Answer 1

60-70% (per ClearCorrect)

Question 2

What are the landmarks for Class I molar and canine relationship?

Answer 2

MB cusp U 1st molar aligned with B groove L 1st molar.

Cusp of U canine slightly behind cusp of L canine (Class II L is behind U, and Class III U is waaay behind L)

Question 3

What is tipping of a tooth?

Answer 3

Tilt the crown without moving the apex.

Question 4

What is torquing movement of a tooth?

Answer 4

To move the root of the tooth through the bone by use of leverage on the crown. The tooth (especially root) pivots around an imaginary axis in the crown.

Question 5

What is rotation movement of a tooth?

Answer 5

To turn a tooth around its vertical/longitudinal axis.

Question 6

What is intrusion movement of a tooth?

Answer 6

To move the tooth and root in the direction of the bone & gums.

Question 7

What is extrusion movement of a tooth?

Answer 7

To move the tooth and root in the direction out of the bone & gums.

Question 8

What is translation movement of a tooth?

Answer 8

To move the crown and root in the same direction at the same time (no rotation around any axis)

Question 9

Engagers are composite devices placed to increase the strength (not force required, but control delivered and probable success of movement) of forces delivered by clear aligners. What are the movement that are enhanced with vertical and horizontal engagers, respectively?

Answer 9

Torquing, tipping, rotation, translation.

Horizontal is for extrusion and intrusion.

Question 10

How much space can be closed using clear aligners?

Answer 10

4-6mm per arch

Question 11

How much crowding can be corrected with clear aligners?

Answer 11

4-6mm

Question 12

How much of a midline discrepancy can be corrected with clear aligners?

Answer 12

2-4mm… maybe. There’s a good chance the midline won’t be perfect. Don’t bring it up during treatment planning because most patients don’t know it’s off and won’t care that it’s off. If you talk about a problem, you’ve created a problem.

Question 13

How much distalization can be accomplished with clear aligners?

Answer 13

2-4mm per quadrant

Question 14

How much expansion (buccal tipping/translation) can be accomplished with clear aligners?

Answer 14

1-3mm per quadrant

Question 15

How much rotation of anterior teeth can be accomplished with clear aligners?

Answer 15

Incisors: 40-45 degrees
Canines: 25-30 degrees

Question 16

How much rotation of posterior teeth can be accomplished with clear aligners?

Answer 16

10-15 degrees

Question 17

How much intrusion can we accomplish with clear aligners?

Answer 17

Anterior: 2mm
Posterior: 1mm

Question 18

How much extrusion can we accomplish with clear aligners?

Answer 18

Anterior: 1mm
Posterior: .5mm

Question 19

How much mesial-distal tipping can we accomplish with clear aligners?

Answer 19

10-20 degrees anterior and posterior

Question 20

How much facial-lingual tipping can we accomplish with clear aligners?

Answer 20

15-30 degrees anterior and posterior

Question 21

How much torquing can be accomplished with clear aligners?

Answer 21

MD: 10 degrees anterior and posterior
FL: anterior 15 degrees, posterior 10 degrees