Class 2

Question 1

Malocclusion is not

Answer 1

A disease but a spectrum respresenting biological variability

Question 2

Normal %

Answer 2

35%

Question 3

% handicapped

Answer 3

5%

Question 4

Overjet

Answer 4

Antero posterior

Question 5

Overbite

Answer 5

Vertical

Question 6

Irregularity increased between _____ and _____ and was stable between _____ and _____

Answer 6

Childhood youth

Youth adulthood

Question 7

When does mandibular crowding increase

Answer 7

Youth and adulthood

Question 8

When would a mild class II decrease

Answer 8

From childhood to a dole scene probably a results of differential jaw growth during growth spurt

Question 9

Transverse components

Answer 9

Refers to Cross bite

Question 10

Vertical problems of anterior open bite versus anterior deep bite exhibits

Answer 10

Racial differences

Question 11

Open bites seen more in

Answer 11

African Americans

Question 12

Severe anterior deep bites more common in

Answer 12

European Americans

Question 13

Malocclusion is in most instances a

Answer 13

Developmental condition

Question 14

Hereditary factors

Answer 14

Disproportion between size of upper and lower jaws

Disproportion between size of teeth and jaw

Heterogenous gene pool

Question 15

With increasing age heritability estimates _____ for skeletal and _____ for dental variables

Answer 15

Increase

Decrease

Question 16

Inheritance is particularly strong for ______ ______ followed by ________ of facial development

Answer 16

Mandibular prognathism

Long face pattern

Question 17

Childhood fractures heal mostly

Answer 17

Uneventful

Question 18

Interferences with post natal development

Answer 18

Fractures

Muscle dysfunction

Acromegaly

Condyerl huperplasia

Question 19

Hypodontia

Answer 19

Missing 5 or fewer teeth

Question 20

Oligodonitia

Answer 20

Missing 6 or more teeth

Question 21

Endodontia

Answer 21

Missing all teeth

Question 22

Form Function interaction

Answer 22

If function could affect the growth of the jaws and or the position of teeth, then altered function would be a major cause of malocclusion

Question 23

Forces on teeth

Answer 23

Are in equilibrium

Question 24

Functional influences

Answer 24

Digit sucking
Tongue thrusting
Respiratory pattern
Diet

Question 25

Threshold time

Answer 25

6 hours

Question 26

Tongue thrusting

Answer 26

Compensatory for open bite-not causation Tongue interposed at rest will have an effect

Question 27

Adenoid Facies

Answer 27

Long face syndrome-increased lower face length Total obstruction of nasal breathing will haven an effect Higher % of mouth breathers in long face individuals but the majority of long face individuals are nose breathers

Question 28

Malocclusion is estimated by

Answer 28

``` Incisor irregularity Overbite/open Overjet Posterior crossbite Diastema >2 ```

Question 29

Straight Profile indicates

Answer 29

Optimal relations of maxilla and mandible and cranial base Usually skeletal and Dental class I

Question 30

Convex profile

Answer 30

Protrusive maxilla Retrieve mandible Usually skeletal and dental Class II

Question 31

Concave Profile

Answer 31

Retrusive Maxilla Protrusive Mandible Usually skeletal and dental Class III

Question 32

Angles classification only applied to

Answer 32

Permanent teeth AP plane of space

Question 33

Most common malocclusion is

Answer 33

Skeletal/Dental Class I crowded

Question 34

Within Class I problems exist in the ______ and _______ and you can have Dental malocclusion problems

Answer 34

Transverse | Vertical planes

Question 35

Posterior crossbites can be

Answer 35

Dental or skeletal constriction

Question 36

Short face often with

Answer 36

Deep bite

Question 37

Short face mandible angled

Answer 37

Very straight

Question 38

Maxillary position

Answer 38

SNA

Question 39

Mandibular Position

Answer 39

SNB

Question 40

Maxilla to Mandible

Answer 40

ANB

Question 41

Growth direction

Answer 41

Y-axis

Question 42

Upper incisor position

Answer 42

Upper insider to FH

Question 43

Lower incisor position

Answer 43

Lower incisor to Mand Plane

Question 44

To predict the size of the premolar and canine of the mandible

Answer 44

1/2 the width of the lower incisors +10.5 mm

Question 45

to predict size of the premolars and canine on side of the maxilla

Answer 45

Take 1/2 width of the lower incisors +11 mm

Question 46

Space discrepancy for each arch=

Answer 46

Space available- size of incisors + predicted size fo the canine and premolars