2018 Questions pt. 1

Question 1

What does not go through the Foramen Lacerum?

Answer 1

Trigeminal Nerve

Question 2

What structures are associated with and pass through the Foramen Lacerum?

Answer 2

Greater Petrosal Nerve joins with the Deep Petrosal Nerve, One terminal branch of the Ascending Pharyngeal Artery (external carotid branch), Internal Carotid artery exits

Question 3

What cranial bones surround the Foramen Lacerum?

Answer 3

Petrous portion of the Temporal bone, Spenhoid bone

Question 4

Which cranial fossa is the Foramen Lacerum located?

Answer 4

Middle Cranial Fossa

Question 5

Which muscle elevates the tongue?

Answer 5

Styloglossus and possibley palatoglossus (elevates posterior aspect of tongue)

Question 6

What muscles attaches to the coronoid process of the mandible?

Answer 6

Temporalis Muscle (Temporal) and Masseter Muscle

Question 7

For every 1 mm of proclination of lower incisors, how much degree changed is noted on the IMPA

Answer 7

1mm tipping = 2.5-3.3 mm (answer to that question is 3)

Question 8

**Which cephalometric angle is not changed as the cranial base steepens?

Answer 8

SNA, SNB, SN-MP, FMIA, FMA

Question 9

1 ppm Fluoride in the water, what percentage of caries reduction occurs?

Answer 9

20-55%

Question 10

When performing a canine substitution case, what aspect of the patient doesn’t matter?

Answer 10

Height of Central Incisors

Question 11

In class I occlusion, what does the DL cusp of the maxillary first molar occlude with?

Answer 11

Distal Marginal Ridge of the Mandibular First Molar

Question 12

When the diameter of the archwire is doubled (2x), what happenes to the strength of the wire

Answer 12

It goes up 8x

Question 13

Taste for posterior 1/3 of the tongue comes from what nerve

Answer 13

CN IX

Glossopharyngeal

Question 14

Which nerve does not innervate the tongue

Answer 14

Vagus

Question 15

Which development craniofacial syndrome does not show delayed tooth eruption?

Answer 15

Hemifacial Microsomia

Question 16

T/F The mandibular plane angle does not decrease with age

Answer 16

False, it does decrease with age

Question 17

When a patient shows bilateral cleft lip, what embryological features of development fail to fuse?

Answer 17

the Maxillary and median nasal processes

Question 18

Most common clinical feature of Apert Syndrome

Answer 18

Syndactyl

Also mental deficit

Question 19

What is the inheritance of Apert Syndrome?

Answer 19

Autosomal dominant

Question 20

What trimester does Hemifacial microsomia occur in?

Answer 20

First Trimester

Will be a T/F question

Question 21

Describe the effect on the condyle in hemifacial microsomia

Answer 21

Condyle may vary from thin, flat ramus with condyle, to complete aplasia of these structures
(Will be a T/F question)

Question 22

How is Dentinogenesis Imperfecta inherited?

Answer 22

Autosomal Dominant

Question 23

What is the prevalence of Dentinogenesis Imperfecta

Answer 23

1/6000-8000

Question 24

Does Dentinogenesis Imperfecta affect only permanent dentition?

Answer 24

No, affects both dentitions

Question 25

Which cell is not in the hyalinization zone?

Answer 25

PMN or Osteoclasts | Not sure which

Question 26

What does the frontonasal process not contribute to? a. Vermilion Border b. Ala c. Maxillary Process d. Philtrum

Answer 26

c. Maxillary Process

Question 27

Bolton point is associated with what cephalometric landmark

Answer 27

Occipital condyle

Question 28

Which part of the mandible is associated with secondary cartilage for growth

Answer 28

Mandibular Condyle

Question 29

When does the right/left mandible fuse

Answer 29

at 9 months of age

Question 30

??Question: Something about CR | Options with Anterior/Superior or no consensus

Answer 30

Document says to go with no consensus

Question 31

How do we know how mandibular growth works?

Answer 31

Through implant studies

Question 32

What causes translational growth (Moss articles)

Answer 32

Capsular matrix

Question 33

What is not a primary growth site?

Answer 33

Synostosis

Question 34

According to the functional matrix theory, what causes sutural growth?

Answer 34

soft tissues

Question 35

What bone allows for accomodation of the orbit

Answer 35

Lacrimal

Question 36

List most common missing teeth in order

Answer 36

``` 3rd Molars (20%), Mandibular 2nd premolars (3.4%), maxillary lateral incisors (2.2%), maxillary 2nd premolars This was a T/F questions with True being correct ```

Question 37

Wire least likely to give palatal root torque

Answer 37

NiTi

Question 38

HPHG is above the center of rotation, what is the affect dentally

Answer 38

Distal Root Tip (DRT) and Intrusion

Question 39

Which is true regarding Twin Block a. Increased horizontal growth in long term b. skeletal vertical changes c. dentoalvolar and skeletal alvoeolar changes d. acrylic helps with less proclination

Answer 39

Both C and D Dentoalveolar and skeletal alveolar changes & Acrylic helps with less proclination

Question 40

What is an alternative to heat sterilization?

Answer 40

Vaporized H2O2

Question 41

Decreased voxel size results in what?

Answer 41

Increased number of photons and more radiation

Question 42

International commission on radiology for population uses what radiation measurement

Answer 42

Equivalent dose OR effective dose. | Not sure

Question 43

Define effective dose

Answer 43

For the whole body | It is the addition of the equivalent doses for all organs, each adjusted for sensitivity of the organ to radiation

Question 44

Define equivalent dose

Answer 44

for individual organs | based on absorbed dose to an organ, adjusted to account for the effectiveness type of the type of radiation

Question 45

Define absorbed dose

Answer 45

Amount of energy deposited by radiation in a mass

Question 46

When doing canine substitution, what do you not do to the canine to make it look like a lateral?

Answer 46

Adjust the distal marginal ridge

Question 47

What is the percentage of Class II patients that are mandibular retrognathic?

Answer 47

75%

Question 48

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

Answer 48

80%

Question 49

What is the percentage of fluoride in mouthwash?

Answer 49

0.05%

Question 50

T/F question about white spot lesions | What percentage of patients have decalcifications post treatment?

Answer 50

50% | Question says 30% and is false.

Question 51

What is the most common error when taking a ceph

Answer 51

Magnification error - patient to anode distance or film to patient distance

Question 52

What is the most common problem collecting analog ceph measurement data

Answer 52

identification of landmarks

Question 53

Patient has open lock, shifts to L and pops on the L side, what does the patient have and on which side?

Answer 53

Posterior displacement on L side

Question 54

What is NOT the biological function of paranasal sinuses? a. Increase resonance of voice b. Buffer for facial trauma c. Insulating sensitive structures like dental roots from temperature fluctuations d. Decrease weight of head e. Something about breathing

Answer 54

Something about breathing (haha very detailed)

Question 55

What muscles are not involved in smiling?

Answer 55

Orbicularis Oris & Procerus

Question 56

What is responsible for the initiation of puberty?

Answer 56

Hypothalamus

Question 57

Which bone of the cranial base undergoes both endochondral and intramembranous growth

Answer 57

Sphenoid bone

Question 58

Which type of medication is contraindicated for ortho treatment and what mode of delivery?

Answer 58

Parenteral bisphosphanates

Question 59

Can Osteoradionecrosis be viewed with radiographs

Answer 59

Yes

Question 60

How do Bisphosphanates affect tooth movement?

Answer 60

It decreases tooth movement

Question 61

T/F, Bisphosphanates will accumulate in hydroxyapatite

Answer 61

True

Question 62

In CPR, how many compressions per minute?

Answer 62

at least 100

Question 63

Where do compressions occur in a child?

Answer 63

lower half of the sternum

Question 64

What affects TAD stability

Answer 64

Cortical Bone Thickness

Question 65

Which of the follow is not true about the MARA appliance: A. Significant distalization of maxillary molars B. Slight increase in mandibular length C. Not as good headgear effect as HERBST D. Proclines the lower incisors more than HERBST

Answer 65

A. Significant distalization of maxillary molars

Question 66

What is the chromium/nickel composition in SS archwires?

Answer 66

18% Chromium | 8% Nickel

Question 67

T/F, Stainless Steel archwires have a high modulus of elasticity? Define "Modulus of Elasticity"

Answer 67

F, It has a low modulus of elasticity. This means it is easily deformed Modulus of Elasticity is the tendency of an object to deform when forces are applied

Question 68

What is attributed to a low change in stress, but high change in strain on the stress/strain curve

Answer 68

Phase transformation Austenitic - Martensitic NiTi wires. Wires that undergo a phase transformation are called Austenitic NiTi wires while those already stabalized in the final phase are called Martensitic NiTi wires

Question 69

What would cause recession in adults?

Answer 69

Either Poor OH or Orthopedic expansion but most likely Orthopedic expansion is the answer

Question 70

What is the Deviation Angle in the bracket?

Answer 70

It is the same as SLOP. Defined as rotation movement of the rectangular archwire from its passive position to a position where two opposite edges of the archwire contact two opposite walls of the bracket slot

Question 71

Is the Intraoral Vertical Ramus Osteotomy (IVRO) setback surgery in Class III patients also beneficial in relief of undesirable TMJ symptoms?

Answer 71

Yes, it is good | Do not rigid fixate

Question 72

A questions about what a FORSUS does not do

Answer 72

One answer is, it does not affect SNA. | If that is not an option, intrusion of Maxillary molars

Question 73

How long does the Regional Acceleratory Phenomenom last?

Answer 73

2-4 months

Question 74

What causes root resorption

Answer 74

High forces, Duration of treatment

Question 75

What is correlated with Root Resorption

Answer 75

Previous History of RR. High intermittent forces was listed as an option too but I think Previous Hx is right

Question 76

Where is the Center of Rotation in tipping of the Mx Incisors

Answer 76

Apical 1/3

Question 77

In a dental open bite, where are Mx incisors compared to location of stomion superioris

Answer 77

Superior

Question 78

A question about anterior open bite...

Answer 78

Long mandibular corpus

Question 79

At what week period does the tongue form?

Answer 79

4 weeks

Question 80

When does the soft palate develop

Answer 80

8-12 weeks

Question 81

What is not generally an issue when performing Distraction Osteogenesis for the midsymphisis

Answer 81

TMD

Question 82

What is the percentage size of the lateral compared to central incisor?

Answer 82

60%

Question 83

Standard of care for malpractice is determined by what entity

Answer 83

Courts

Question 84

What percentage of patients with high condylar fracture have normal growth in mandible

Answer 84

75%

Question 85

What treatment to a root has a higher chance of fracture?

Answer 85

CaOH apexification