final (2020 Exam)

Question 1

How many teeth come from successional lamina?

Answer 1

24 are

8 are not successional

referring to succedaneous teeth

Question 2

how do you speed up the eruption of a permanent teeth?

Answer 2

Waiting to extract the primary tooth until 2/3 of the permanent root is formed

Question 3

Primary lower canine is missing very early. What intervention?

Answer 3

HOOK???

What does this mean?

Question 4

Primary molar size

Answer 4

10 mm

Question 5

Mom complains her kid has 6 teeth at 14 months. Is this normal amount?

Answer 5

No, at 14 months the child should have the following:

• Central Incisors Max (6-10 months and Man (5-8 months)
• Lat Incisors max (8-12) and Man (7-10)
• First Molars Max (11-18) Man (11-18)

Question 6

Which arch has more leeway?

Answer 6

Mandibular

Question 7

What age does the mandible dramatical stop growing?

Answer 7

8-10

Question 8

What age should a female get ortho intervention?

Answer 8

8-11

Question 9

Which tooth is most commonly missing

Answer 9

upper lateral incisor

Question 10

What percent of people have missing teeth?

Answer 10

3-5%

Question 11

What is the most impacted tooth?

Answer 11

upper canine

Question 12

What is the correct order of cognitive development?

Answer 12

sensorimotor
preoperational
concrete
formal

Question 13

With the 8 ages of man, what is more important the sequence or the age?

Answer 13

sequence

Question 14

in primary teeth, is it normal to have incisal edges in contact in the vertical dimension

Answer 14

yes, there is more overlap in permanent teeth

Question 15

t/f: the canine erupts after the premolar

Answer 15

true in the permanent Maxillary arch

false in the permanent mandibular arch

Question 16

most important conditioning in dentistry?

Answer 16

+ and - reinforcement

Question 17

kid throws tantrum and ends up leaving dental office = ______ ______

Answer 17

• reinforcement

Question 18

t/f: growth of arch width DOES NOT CHANGE after eruption of permanent upper canine

Answer 18

true

Question 19

t/f: overbite INCREASES in permanent dentition

Answer 19

true

Question 20

most important structure for tooth eruption

Answer 20

tooth root

Question 21

when is Primary dentin formed?

Answer 21

Formed during tooth development (4um/day)

Question 22

t/f: Permanent dentition of maxilla erupts buccal to primary, and mandibular permanent erupts lingual to primary.

Answer 22

true

Question 23

What are the 2 secretory proteases secreted in secretory stage of ameloblasts

Answer 23

enamelysin and kallikrein

Question 24

dental lamina breaks and then separates the tooth from oral epithelium

Answer 24

late bell stage of tooth development

Question 25

Should reduce canine in cases of severe crowding ??????

Answer 25

???????????idk what this means

Question 26

t/f: Ankylosis refers to fusion of the root of a primary tooth to the underlying bone

Answer 26

true

Question 27

What is the treatment for an ankylosis

Answer 27

monitor until an appreopriate dental age to extract

Question 28

T/f: At 10 years, ankylosis of canine. To reduce potential should EXTRACT.

Answer 28

true

Question 29

Functional posterior crossbite: deviated in the direction of the crossbite??????

Answer 29

???????

Question 30

Which of the following are characteristics of crouzon syndrome?

Answer 30

premature closure of all sutures

Question 31

Characterisitics of Cleidocranial dysplasia

Answer 31

a. Supernumerary teeth b. Delayed eruption c. Slow eruption d. All of the above ALL of the ABOVE

Question 32

Osteogenesis imperfecta leads to what class malocclusion

Answer 32

Class III

Question 33

t/f:

Answer 33

Normal skeletal relationship: cranial base angle is stable for life

Question 34

What is the most common type of malocclusion?

Answer 34

class I (50-55%)

Question 35

Skeletal pattern that involves mandibular prognathism:

Answer 35

Class III

Question 36

The original angle class involves:

Answer 36

Anterior-Posterior relationships

Question 37

When does the first primary tooth erupt?

Answer 37

8 months

Question 38

When does the first permanent tooth erupt??

Answer 38

6 years

Question 39

What does the occlusal plane pass through?

Answer 39

the occlusal surfaces

Question 40

t/f: the primary dentition has no angulation in the transverse direction

Answer 40

true

Question 41

t/f: Overbite is the vertical overlap of mandibular incisors by their maxillary antagonists

Answer 41

true