2015 Questions Pt. 3

Question 1

T/F
Parenteral bisphosphonates decrease orthodontic tooth movement and post-orthodontic relapse
Localized bisphosphonates are contraindicated

Answer 1

True

False

Question 2

Amphetamines exert which adrenergic effects?

a. Dilated pupils
b. Constricted pupils
c. Dilated vasculature
d. Constricted vasculature

Answer 2

a. Dilated pupils

Question 3

What is the correct ratio and order for chest compressions and rescue breathing

Answer 3

30 compressions - 2 breaths

Question 4

Where do you place your hands for chest compressions

Answer 4

lower half of sternum

Question 5

What scenarios require premedication

Answer 5

Band placement

Previous hx of infective endocarditis

Question 6

If a patient is allergic to Amoxicillin, what is the 2nd choice

Answer 6

Clindamycin 600 mg

Amoxicillin - 2 grams

Question 7

T/F
Gorlick found that 30% of ortho pts. have white spot lesions
White spot lesions go away after 2-3 months of good oral hygiene without heavy fluoride use/wait 2-3 months after debond to apply fluoride

Answer 7

False (50%)

False (Not heavy use, without heavy use is correct)

Question 8

Which of the following is not increased from fluoride use?

a. pH
b. Size of hydroxyapatite crystal
c. Solubility of hydroxyapatite crystal

Answer 8

c. Solubility of hydroxyapatite crystal

Question 9

What percentage of sodium fluoride should orthodontic patients rinse with daily?

Answer 9

0.05%

Question 10

Fluoride prevents caries in developing teeth at what percentage?

Answer 10

20-40%

Also seen 20-55%

Question 11

Define HIPAA

Answer 11

Health Insurance Portability and Accountability Act

Question 12

You are performing an experiment to predict mandibular growth from 3 different initial ceph values
What statistical analysis should you use

Answer 12

Correlation

Question 13

Which is not used in ABO discrepancy index?

Answer 13

FMA

Question 14

When does the ABO score third molars?

Answer 14

When they are substituting for second molars

Question 15

Which does not score DI points

Answer 15

Lower incisor <80

Question 16

What are the ceph measurements in the ABO DI

Answer 16

ANB, IMPA, SN-GoGn

Question 17

Wavelength of orthodontic curing light?

What is the wavelength that ortho resins are activated?

Answer 17

460-480 nm

Question 18

Which are important for TAD primary stability

Answer 18

Cortical bone thickness and Diameter

Question 19

T/F

Pilot holes increase TAD stability

Answer 19

True

Question 20

T/F

Best place to place a TAD when protracting a mandibular molar is distal to the cuspid

Answer 20

True

Question 21

Property of springback is related to?

Answer 21

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

Question 22

Highest coefficient of friction is found in what wire?

Answer 22

TMA > NiTi > SS

Question 23

The ability of a wire to have high deflection but low force is due to?

Answer 23

Phase transformation

Question 24

What type of wire delivers the most consistent type of force?

Answer 24

A-NiTi

Question 25

Why does stress strain not affect load deflection of NiTi wire?

Answer 25

Phase transformation | A --> M

Question 26

What is the flat part of the curve for NiTi called?

Answer 26

Phase transformation

Question 27

What wire is best for continuous light forces?

Answer 27

A-NiTi

Question 28

How is NiTi activated?

Answer 28

Austineitic --> Martensitic

Question 29

Most important factor in leveling when picking size?

Answer 29

Load deflection

Question 30

T/F Pre-adjusted straightwire brackets guarantee optimal positioning of teeth However, most cases require bends to optimally position a few teeth

Answer 30

False | True

Question 31

TPA is least useful for:

Answer 31

Anchorage in AP

Question 32

Which of the following is least effective in maintaining vertical? a. Nance b. TPA c. High Pull Headgear

Answer 32

TPA

Question 33

What complications can arise from a mandibular respositioning appliance for sleep apnea

Answer 33

Occlusal discrepancies and alterations

Question 34

T/F LLHA can successfully hold space for eruption of premolars and canines It can also prevent eruption of lower incisors

Answer 34

True | True (permanent are more lingual)

Question 35

What is the leeway space on top and bottom? mm amount

Answer 35

1. 5 maxilla (per side)_ | 2. 5 mandible (per side)

Question 36

T/F | 68% of patients had resolution of crowding with LLHA

Answer 36

True

Question 37

LLHA can correct how much crowding?

Answer 37

4-5 mm

Question 38

LLHA intermolar width increased how much compared to controls?

Answer 38

1 mm

Question 39

With VME, what do you see in concurrence?

Answer 39

Retrognathia/Class II

Question 40

Primary action of lip bumper

Answer 40

Relieves incisor alignment

Question 41

Twin block appliance therapy has what affects?

Answer 41

Dental and Skeletal mostly to achieve Class I | Incisal capping to reduce incisor flaring

Question 42

Which of the following is true about Class II functional appliances

Answer 42

It opens the bite

Question 43

Forsus has all of the following effects except for: a. Distalize maxillary molars b. Increase SNB c. Decrease SNA d. Mesialize mandibular molar

Answer 43

c. Decrease SNA

Question 44

What percentage of Class II cases are fixed after Phase 1 treatment

Answer 44

75%

Question 45

What sutures limit RPE

Answer 45

Zygomatic buttress

Question 46

When using an RPE, what sutures are not affected?

Answer 46

Premaxillary

Question 47

RPE expands where?

Answer 47

More anteriorly and inferiorly

Question 48

For every 1 mm of intertooth expansion in the posterior, how much arch perimeter is gained with an RPE

Answer 48

0.7 mm premolar

Question 49

Gingival recession is most common in orthodontic patients who undergo

Answer 49

Maxillary orthopedic expansion

Question 50

How do you counteract the side effects of an upper intrusion arch on the molars?

Answer 50

High Pull HG with short outerbow and TPA