final file

Question 1

how many teeth come from successional lamina

Answer 1

20

Question 2

speeding up permanent tooth eruption

Answer 2

2/3 root of tooth is formed

Question 3

intercanine distance in lower arch is expected to increase

Answer 3

until 10-11 years old

Question 4

primary molar size?

Answer 4

10 mm

Question 5

primary arch is

Answer 5

flat

Question 6

how many primary teeth for 3 year old

Answer 6

20

Question 7

in caucasians, which tooth is most commonly missing

Answer 7

upper lateral incisor

Question 8

most impacted tooth

Answer 8

upper canine

Question 9

what is the order of cognitive development

Answer 9

sensorimotor, preoperational, concrete, and formal

Question 10

T/F
chronological age is more important than 8 ages of man?

Answer 10

false

Question 11

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

Answer 11

true?

Question 12

T/F
lower permanent canine erupts before upper permanent canine

Answer 12

true

Question 13

anterior open bite is

Answer 13

all of the above:
a. transitory
b. skeletal origin
c. neuromuscular imbalance

Question 14

growth of arch width ____ after eruption of permanent upper canine

Answer 14

does not change

Question 15

what is the most important conditioning in dentistry

Answer 15

positive and negative reinforcement

Question 16

a child has a tantrum in the waiting area of the office. as a result, the parent allows the child to get out of the appt. what is this

Answer 16

negative reinforcement

Question 17

once the permanent canines have erupted, the intercanine distance width

Answer 17

remains the same (doesnt change after 10-11)

Question 18

group of permanent teeth first to erupt

Answer 18

central incisors

(of lower and 6 year molars??)

Question 19

in females, the lower central permanent central incisor usually erupts around the age of

Answer 19

6-7

Question 20

permanent dentition of maxilla erupts _____to primary teeth and permanent dentition of mandibular erupts ___ to primary

Answer 20

labial/buccal

lingual

Question 21

which of the following cell types are NOT derived from cranial neural crests

Answer 21

ameloblast

Question 22

secretory ameloblast produce proteases during enamel formation. which of the following is not one of these proteases

Answer 22

amelogenin (also ameloblastin, enamelin)

are:
enamelysin
MMP20
Kallikrein

Question 23

when should you reduce canines in primary dentin

Answer 23

severe crowding (>5mm)

Question 24

how many calcified teeth does a 3 year old have

Answer 24

20

Question 25

ankylosis

Answer 25

fusion of the root of a primary tooth to the underlying bone

Question 26

how do you treat ankylosis

Answer 26

monitor (for exfoliation; if not, then extract)

Question 27

white coat syndrome

Answer 27

behavioral development

Question 28

crouzon syndrome:

Answer 28

premature closure of all sutures (lack of formation of facial structures) (says prognathic mandible is right answer) -small maxilla

Question 29

cleidocranial dysplasia

Answer 29

(all of the above) a. supernumerary teeth b. retained primary teeth c. protrusive mandible

Question 30

osteogenesis imperfecta class

Answer 30

class III malocclusion (posterior open bite)

Question 31

down syndrome class

Answer 31

class III malocclusion

Question 32

most common dental alveolar malocclusion

Answer 32

class I malocclusion

Question 33

which stage of tooth development do cells in the enamel organs synthesize glycosaminoglycans in the ECM?

Answer 33

cap stage

Question 34

when does the first primary tooth erupt at

Answer 34

6 months

Question 35

class II malocclusion presents

Answer 35

retrognathic mandible

Question 36

common impacted tooth is

Answer 36

upper canine

Question 37

occlusal plane is?

Answer 37

imaginary line that passes through occlusal surfaces

Question 38

T/F: the primary dentition has no angulation in the transverse direction

Answer 38

true

Question 39

overbite in an average patient will

Answer 39

be more pronouced in permanent dentition

Question 40

overbite is:

Answer 40

the vertical overlap of mandibular incisors by their maxillary antagonists

Question 41

T/F: there is only one pathway for tooth development

Answer 41

false

Question 42

primary lower canine is missing very early. what is the intervention

Answer 42

Hook????

Question 43

mom complains her kid has 6 teeth at 14 months. is this normal amount?

Answer 43

no, more teeth than normal, however nothing to worry about (i think this is less than normal, but still fine)

Question 44

the original angle class invovles

Answer 44

A-P dimension

Question 45

at 9 years old, upper permanent canine appears to be mesially angled. to prevent palatal impacting you should do what?

Answer 45

radiograph then decide after 6 months?

Question 46

what can cross bite be caused by

Answer 46

all the above: a. transitory b. skeletal c. neuromuscular

Question 47

do permanent maxillary canine erupt before, during, or after eruption of 2nd premolar?

Answer 47

after (mand canine erupts before mand 2nd premolars)

Question 48

at 6-8 years old, has a big lower central incisor and tooth count reveals missing tooth

Answer 48

fusion

Question 49

at 9 years old, has a diastema between the central incisor with erupted permanent upper lateral incisors and primary canine. what should we do

Answer 49

radiographs then decide

Question 50

skeletal pattern that involves mandibular prognathism?

Answer 50

class III malocclusion

Question 51

list two side effects of thumb sucking

Answer 51

anterior open bite malocclusion unfavorable skeletlal patterns ectopic dental eruption

Question 52

list teeth that are not present in a 9.5 year old

Answer 52

max: 1. canines 2. 1st premolar 3. 2nd premolar 4. 2nd molars mand: 1. canines (present at 10 years) 2. 1st premolars 3. second premolars 4. 2nd molars

Question 53

incisor liability:

Answer 53

permanent incisors are larger than primary incisors

Question 54

malocclusion diagnosed in primary dentition will

Answer 54

become malocclusion in permanent dentition

Question 55

crouzon's syndrome

Answer 55

characterized by lack of formation of facial structures

Question 56

characterisitics of cleidocranial dysplasia are:

Answer 56

poorly developed clavicle and supernumerary teeth

Question 57

ugly duckling stage is during what years

Answer 57

8-10 years old

Question 58

what is not class III?

Answer 58

increase overjet (would be class II i believe)

Question 59

vertical alveolar dental growth

Answer 59

maxilla gets larger, mandible gets smaller

Question 60

T/F edge to edge is normal

Answer 60

says true but i feel like false

Question 61

at 10 years old, ankylosis of the canine. to reduce potential, what should we do

Answer 61

extract

Question 62

functional posterior crossbite

Answer 62

deviated in the direction of the crossbite

Question 63

which arch has more leeway space

Answer 63

mandible

Question 64

what age should a female get ortho intervention

Answer 64

8-11?

Question 65

what percent of people have missing teeth

Answer 65

3-5%

Question 66

what is the most important structure for tooth eruption

Answer 66

root

Question 67

primary dentin

Answer 67

formed during tooth development (4um/day)

Question 68

late bell stage:

Answer 68

dental lamina breaks and then separates the tooth from oral epithelium

Question 69

normal skeletal relationship:

Answer 69

cranial base angle is stable for life

Question 70

when does the first permanent tooth erupt at

Answer 70

6 years old

Question 71

transition from juvenile to adult are determined by

Answer 71

development of permanent canines

Question 72

enamel formation. list secretory proteins: list proteases:

Answer 72

secretory proteins: amelogenin ameloblastin enamelin proteases: enamelysin (MMP20) kallikrein