Summer Mock

Question 1

All of the following are advantages of the indirect method of bonding brackets to a tooth over the direct method EXCEPT

Answer 1

less technique sensitive

Question 2

which of the following are considered functional appliances

Answer 2

Frankel
Bionator
Clarks twin block
Herst
Activator
QUAD HELIX IS NOT

Question 3

Headgear appliance is used for

Answer 3

both anchorage and traction

Question 4

which of the following is not a fixed appliance

Answer 4

frankel appliance

Question 5

when comparing stainless steel versus nickel titanium, stainless steel has a _______ modulus of elasticity and ________ resilience

Answer 5

higher , lower

Question 6

which appliance is probably the most widely used today by orthodontist

Answer 6

edgewise

Question 7

the hawley retainer is the most common in ortho because it can use the palate for anchorage

Answer 7

correct but not related

Question 8

an active finger spring of a removable appliance usually touches the tooth with a point contact. what is the most likely type of tooth movement produced in this situation

Answer 8

tipping

Question 9

prior to bonding _____is used as an etching agent. Prior to placing bands, _______ is used as an etching agent

Answer 9

35-50% unbuffed phosphoric acid; nothing

Question 10

in a maxillary permanent incisor crossbite, in order to treat this condition properly the dentist should do what

Answer 10

correct the condition immediate with a simple appliance

Question 11

ortho forces can be treated as math vectors

forces produce either translation, rotation, or a combination of translation and rotation, depending upon the relationship of the line of action of the force to the center of resistence

Answer 11

both are true

Question 12

what can cause extrusion of the maxillary first molar which can cause an open bite

Answer 12

cervical pull headgear

Question 13

which condition is appropriately treated at an early age

Answer 13

posterior crossbite with a functional shift

Question 14

displaced teeth related to functional shifts occur in which of the following situations

Answer 14

posterior crossbite
anterior crossbite

Question 15

maxillary expansion is often done to correct crossbites.
tongue thrusting often causes an anterior open bite

Answer 15

both are true

Question 16

what is not a classic symptom of sucking habbit

Answer 16

expanded maxillary arch

Question 17

an anterior crossbite should be corrected as soon as it is detected because it is difficult to retain the corrected occlusion

Answer 17

correct but unrelated

Question 18

a patient’s SNA angle is 78. the SNB is 76. this tells us that the maxilla is ______, the mandible is_____, and the skeletal profile is ______

Answer 18

retrognathic, retrognathic, class I

Question 19

a poor man’s ceph is performed via

Answer 19

facial profile anaylsis

Question 20

what does not correlate with a steep mandibular plane

Answer 20

Class III malocclusion

Question 21

what is needed so that the soft tissues are clearly visible on a lateral cephalometric radiograph

Answer 21

soft tissue shield

Question 22

identify the frankfurt-horizontal plane and the numbered point it uses for its origin

Answer 22

a line through porion and orbitale.

Question 23

in predicting the time of the pubertal growth, the ortho can get the most valuable info from

Answer 23

wrist hand

Question 24

in a series of extraction case, what is the correct order of tooth removal

Answer 24

p-canine, p-first molar, perm first premolar

Question 25

what is the correct sequence of uprighting a tooth

Answer 25

separate band upright complete crown lengthening complete crown prep

Question 26

at the age of 9, young jimmy needs his tooth #30 pulled due to caries. What is the proper space maintenance

Answer 26

no space maintenance

Question 27

_____ describes movement of the crown in one direction while the root tip is displaces in the opposite direction

Answer 27

tipping

Question 28

_______ is controlled root movement while the crown in held relatively stable

Answer 28

torque

Question 29

A post-ortho circumfrential supracrestal fibrotomy is performed, thus reducing the tendency of rotated tooth relapse

Answer 29

both are true

Question 30

which are part of the rationale for retention in ortho

Answer 30

all

Question 31

the cranial vault is made up of a number of flat bones that are formed by _______, ______ cartilagenous precursors

Answer 31

intramembraneous bone formation; without

Question 32

once bone is formed, it grows by

Answer 32

appositional growth

Question 33

cartilage differs from bone in that cartilage can increase size by

Answer 33

interstitial growth

Question 34

the sole function of the alveolar process is to support the teeth, which is why it resorbs if a permanent tooth is extracted

Answer 34

both are correct and related

Question 35

bone deposition in the ____ region is responsible for the lengthening of the maxillary arch

Answer 35

tuberosity

Question 36

An 18 year old patient presents back to you complaining of crowding of his lower anterior incisors. It is because of

Answer 36

late mandibular growth

Question 37

what percentage of 6-year old children have a median maxillary diastema

Answer 37

98%

Question 38

the length of the mandibular arch is longer than the maxillary arch the difference is only about 2mm

Answer 38

false true

Question 39

the most commonly impacted tooth is the mandibular canine. the longer a tooth has been impacted, the more likely it is to be ankylosed

Answer 39

false, true

Question 40

if a permanent maxillar first molar has errupted ectopically against the distal root surface of a primary second molar, what is the tx of choice

Answer 40

a brass wire place between the primary and second molar and permanent first molar

Question 41

the time required to upright a molar can very from the time required to stabilize the molar can vary from

Answer 41

6/12 months 2/6 months

Question 42

which is NOT are signs of incipient malocclusion

Answer 42

larger than normal primary teeth

Question 43

a patient presents with long face syndrome based on webDDS. the man has obvious mouth breathing. what is your immediate thought

Answer 43

skeletal open bite

Question 44

angle class I represents % of the population while class II represents

Answer 44

70; 25

Question 45

what ceph measurement is characteristic in class I

Answer 45

ANB <4 degrees

Question 46

a concave profile is associated with a class III occlusion It is also termed retrognathic

Answer 46

true false

Question 47

which of the following can be used to describe a class II malocclusion

Answer 47

overbite or retrognathism

Question 48

which of the following is least common

Answer 48

Class III

Question 49

the existence of a forward shift of the mandible during closure to avoid incisor interference is found in

Answer 49

pseudo class III

Question 50

the most common cause of class I malocclusion is

Answer 50

discrepancy between tooth size and supporting bone

Question 51

which of the following is/are general causes of failure of tooth erruption or delayed erruption

Answer 51

hereditary gingival fibromatosis down syndrome rickets

Question 52

primate space is located between the lateral incisors and canines in the max in the mand, it is located between k9 and 1st molar

Question 53

which of the following primary molar relationships can you expect to result in a class II relationship in the permanent dentition

Answer 53

distal step

Question 54

a PA of primary tooth M shows tooth #22 overlapping half of the root. the patient is not in the chairr. what would you presume

Answer 54

#22 is errupting facially

Question 55

leeway space is calculated difference between primary and permanent tooth size there is typically more leeway space in the max arch

Answer 55

first true second false

Question 56

6-year old patient and her mother present to your office. Her moms chief complaint is "my kids overtbite makes her look like bugs bunny. what is wrong with the moms statement

Answer 56

she is mixing up overbite and over jet

Question 57

which of the following teeth are required for a dentist to perform a moyers mixed dentition anaylsis

Answer 57

mandibular incisors

Question 58

which of the following is false concerning dentition anaylsis?

Answer 58

anaylsis for each quadrant