Final Exam

Question 1

What is the percentage of class 2 malocclusion in the general population?

Answer 1

30%

Question 2

Functional posterior cross bite due to maxillary deficiency is readily apparent in:

Answer 2

maximum interdigitation

Question 3

The main etiology of functional posterior cross bite:

Answer 3

maxilla slightly narrower than mandible in the transverse plane

Question 4

Most common association with class III

Answer 4

anterior cross bite

Question 5

Treatment for 8 year old class III moderate malocclusion with anterior cross bite:

Answer 5

maxillary expansion and protraction face mask

Question 6

Percentage of class III with maxillary deficiency:

Answer 6

65%

Question 7

T/F: Intermaxillary elastics are appropriate for use in severe skeletal class II or III malocclusion

Answer 7

false

Question 8

T/F: Invisalign can be done without orthodontic knowledge

Answer 8

false

Question 9

What is the percentage for a normal overbite?

Answer 9

20% + or - 5

Question 10

Which movement does NOT require the use of attachments?

Answer 10

intrusion

Question 11

How do you prevent relapse after correction of deep bite?

Answer 11

Hawley retainer with anterior bite plate

Question 12

Which of the following are treatment options for class I division II?

a- low pull headgear
b- intrusion of upper incisors
c- lower molar eruption
d- all of the above

Answer 12

all of the above

Question 13

Which of the following is true in regard to open bites?

a- present in multitude of malocclusions

b- widely understood

c- heavily studied

d- not as common for relapse

Answer 13

a- present in a multitude of malocclusions

Question 14

Question about how much incisors are showing at rest in open bite?

Answer 14

variable but usually increased

Question 15

What dentoalveolar compensation is most common in open bite?

Answer 15

over eruption of upper molars

Question 16

What is the function of bite ramps in Invisalign?

Answer 16

level curve of spee

Question 17

What is the most common SURGICAL procedure to treat skeletal class II deep bite?

Answer 17

mandibular advancement

Question 18

Dentoalvolar movement of fixed functional appliances:

Answer 18

proclination of lower incisors

Question 19

Dentoalveolar compensation of class III malocclusion:

Answer 19

proclaimed upper incisors, retroclined lower incisors

Question 20

Slow extrusion results in:

Answer 20

uneven gingival margin

Question 21

Sequence of restoration before extrusion:

Answer 21

posterior first before anterior

Question 22

T/F: You use implants to mesially upright tilted molars

Answer 22

true

Question 23

Anchorage teeth/bracketing is an example of:

Answer 23

passive

Question 24

Rapid extrusion=

Answer 24

high force

Question 25

treatment for 11 year old with deep bite:

Answer 25

functional appliance

Question 26

T/F: You should consider esthetics and occlusion before retention:

Answer 26

true

Question 27

How often should fiberotomies be done in rapid extrusion:

Answer 27

2-3 weeks

Question 28

When to correct pseudo anterior cross bite:

Answer 28

as soon as possible in mixed dentition

Question 29

What is done to curve of spee in deep bite?

Answer 29

level of curve spee

Question 30

What is the function of a twin block?

Answer 30

mandibular growth enhancement

Question 31

Class 2 division 1 =

Answer 31

increased overjet

Question 32

Class 2 division 2 =

Answer 32

retroclined upper central incisors

Question 33

Applying force only to the crown of a tooth will result in:

Answer 33

tipping

Question 34

Transverse deficiencies can be:

Answer 34

present in any type of malocclusion

Question 35

Ideal age to treat =

Answer 35

8-10 years old

Question 36

Most common etiology for class II malocclusion:

Answer 36

retrognathic mandible