1st Class

Question 1

______ is a specialty branch of dentistry that deals with the
diagnosis, prevention, and correction of mal-positioned teeth and
jaws.

Answer 1

Orthodontics

Question 2

It can also focus on modifying facial growth, known as ________

Answer 2

dentofacial orthopedics.

Question 3

____ = straight

Answer 3

Ortho

Question 4

_____ = tooth

Answer 4

Odont

Question 5

__________ = The Science of Straight Teeth

Answer 5

Orthodontics

Question 6

_________ created the first simple system for classifying malocclusion, a system which is still used today.

Answer 6

Edward Angle

Question 7

What is the ideal occlusion in relation to first max molars?

Answer 7

Mesiobuccal cusp of the upper molar occludes in the buccal groove of the lower molar.

Question 8

Angle’s postulate was that the ________ were the key to occlusion and that the upper and lower molars should be related so that the:

Mesiobuccal cusp of the upper molar occludes in the buccal groove of the lower molar.

Answer 8

upper first molars

Question 9

Angle’s statement, which 100 years of experience has proved to be correct, except when there are aberrations in the ____ of teeth.

Answer 9

size

Question 10

• Normal relationship of the molars, but line of occlusion incorrect because of malposed
teeth, rotations, or other causes.

Answer 10

•Class I:

Question 11

• Lower molar distally positioned relative to upper molar, line of occlusion not specified.
- upper molar mesial

Answer 11

•Class II:

Question 12

• Lower molar mesially positioned relative to upper molar, line of occlusion not specified.
- upper molar distal

Answer 12

•Class III:

Question 13

Which class of angles is the most likely to be seen?

Answer 13

Class 2

Question 14

Which class of angles can be described by 1/4, 1/2, 3/4, and full cusp classification?

Answer 14

Class 2

Question 15

The canine classification says that the max canine should sit where on mandibular arch?

Answer 15

In embrasure btwn Mand canine and mand 1st PM

Question 16

Class 2 Div _____:

Has proclined upper incisors

Answer 16

Class 2 Div 1

Question 17

Class 2 Div ____:

Retroclined upper incisors

Answer 17

Class 2 Div 2

Question 18

The ________ is a smooth (catenary) curve passing through the central
fossa of each upper molar and across the cingulum of the upper canine and
incisor teeth.
The same line runs along the buccal cusps and incisal edges of the lower teeth.

Answer 18

line of occlusion

Question 19

Where does the line of occlusion run thru the maxillary teeth?

Answer 19

Central fossa of molars/PMs and across cingula of anteriors

Question 20

Where does the line of occlusion run thru the mand teeth?

Answer 20

Buccal cusps and and incisal edges

Question 21

Is proper occlusion the only thing needed to have balanced ortho stability?

Answer 21

No

Question 22

Dr Tweed and Begg introduced ____ back into Ortho:
•Enhance facial esthetics
and
•Achieve better stability of the occlusal relationships.

Answer 22

Extraction of teeth

Question 23

A ______ can be defined as a set of shared beliefs and
assumptions that represent the conceptual foundation of an
area of science or clinical practice.

Answer 23

paradigm

Question 24

“Both the goals and limitations of modern orthodontic and
orthognathic surgeries are determined by the soft tissues of
the face, not by the teeth and bones.”

Answer 24

Soft tissue paradigm

Question 25

•The primary goal of treatment becomes _______ relationships and adaptations, not Angle’s ideal occlusion.

Answer 25

soft tissue

Question 26

The secondary goal of ortho treatment becomes _______

Answer 26

functional occlusion.

Question 27

Contemporary thinking focuses more on soft tissues or skeletal disturbances/occlusion?

Answer 27

Soft tissue

Question 28

\_\_\_\_\_\_\_ (Crowding) usually 
is expressed as the irregularity index.
•The total of the millimeter distances 
from the contact point on each incisor 
tooth to the contact point that it 
should touch.

Answer 28

Incisor irregularity

Question 29

_____ population show the higher percentage with moderate and severe crowding compared to other groups.

Answer 29

Hispanic

Question 30

A space between adjacent teeth is called

a ______.

Answer 30

diastema

Question 31

Spontaneous correction of a childhood
diastema is most likely when its width is
not more than ____ mm.

Answer 31

2 mm

Question 32

_______ exists when the maxillary posterior teeth are lingually
positioned relative to the mandibular teeth.

Answer 32

Posterior crossbite

Question 33

Posterior crossbite most often reflects a ______ maxillary dental arch but can
arise from other causes.

Answer 33

narrow

Question 34

______ is defined as horizontal overlap of the incisors.

Answer 34

Overjet

Question 35

If the lower incisors are in front of the upper incisors,

the condition is called _______ or _______

Answer 35

reverse overjet or anterior

crossbite.

Question 36

_____ is defined as the vertical overlap of

the incisors.

Answer 36

Overbite

Question 37

If there is no vertical overlap, it is called _______

Answer 37

open bite.

Question 38

There is almost one chance in three

of an injury to a _____ incisor

Answer 38

protruding incisor

Question 39

Do Most of the accidents occur during

normal activity or in sports?

Answer 39

Normal activity