2013-2017 Pt. 3

Question 1

In bone loss, there is decreased…?

Answer 1

osteoblasts production/formation

Question 2

2nd most common craniofacial defect after cleft lip and palate?

Answer 2

Hemifacial Microsomia

Question 3

Which is not formed by the frontonasal process?

a. secondary process
b. primary process
c. vermillion of lip
d. maxillary process
e. columnella

Answer 3

d. Maxillary process is not

Question 4

Early extraction of primary canines will do all of the following except?

a. Increased OJ
b. Increased OB
c. Fix midline discrepancy
d. Incisors will distalize

Answer 4

FIX MIDLINE DISCREPANCY

Question 5

When doing a Maryland bridge, what should be the inclination of the incisors compared to the occlusal plane?

Answer 5

Perpendicular

Question 6

What is the width/height ratio of the central incisor optimally?

Answer 6

80%

Question 7

Where is opisthion located?

Answer 7

Posterior part of foramen magnum

Question 8

Forsus does all of the following except?

a. Mesialize mand molars
b. distalize max molars
c. Decrease SNA
d. Increase SNB

Answer 8

c. Decrease SNA

Question 9

Why does radiation dose increase with decreased voxel size

Answer 9

More photons/more radiation is necessary to fill up the fill factor as the pixel fill factor is decreased for greater number of voxels and resolution

Question 10

What does Pierre Robin not have?

Answer 10

Cleft lip

Question 11

Median nasal does not give rise to what?

Answer 11

Ala (lateral nasal)
Secondary Palate (maxillary process)

Question 12

When the curve of wilson is deep, what type of occlusal interferences occur?

Answer 12

Non-working interferences

Question 13

What does not happen if you only extract lower 4s to treat a class III patient

Answer 13

Less balancing interferences

Question 14

Definition of CR in context of the condylar position

Answer 14

Most anterior superior

Question 15

When choosing a wire for leveling and aligning, what is most important?

Answer 15

Low load deflection

Question 16

What is the relationship of maxillary incisors to stomion superiorus in a patient with skeletal open bite?

Answer 16

Below

Question 17

Which wire has the most friction with SS brackets?

Answer 17

TMA

Question 18

What is the origin of osteoblasts

Answer 18

mesenchyme-derived cells

Question 19

Fluoride increases all except

a. size of the hydroxyapatite crystal
b. fluoride uptake
c. solubility
d. pH

Answer 19

c. solubility

Question 20

T/F, Hyperdivergent treatment in the early mixed dentition is indicated because the phenotype can be detected early

Answer 20

True

Question 21

Treatment for hyperdivergence

Answer 21

Chin cup

Question 22

An RPE does all of the following except:

a. expand the basal bone of the maxilla
b. has more expansion anterior than posterior
c. has more expansion inferior than superior
d. nasal cavity remains stable throughout treatment

Answer 22

d. nasal cavity remains stable throughout treatment

Question 23

What range are bonding materials light cured at?

Answer 23

460-490 nm

Question 24

Cyst associated with missing tooth, formed from dental lamina

Answer 24

OKC/Primordial cyst

Question 25

Class II elastics through center of resistance of maxilla. But in mandibular plane, it was distal to center of resistance. What would happen?

Answer 25

Maxillary occlusal plane will remain the same

Question 26

T/F, Health providers are more at risk for HIV than Hep C or Hep B. You can vaccinate against Hep C

Answer 26

False, False

Question 27

Studies about external root resorption have found the following to be true

a. Incisor trauma leads to increased risk of RR
b. Heavy forces are more likely than light forces to cause RR
c. RR is not associated with duration of treatment

Answer 27

b. Heavy forces are more likely than light forces to cause RR

Question 28

Property of springback is related to?

Answer 28

Ability to be activated (exert clinically useful force when bent) beyond yield point