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ABO Written Exam > 2013-2017 Pt. 1 > Flashcards

2013-2017 Pt. 1 Flashcards

1
Q

Bolton point is associated with what anatomic landmark?

A

Occipital Condyle

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2
Q

What cell does not come from neural crest cells?

A

Ameloblasts

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3
Q

What craniofacial syndrome is associated with mental retardation

A

Aperts Syndrome

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4
Q

1 ppm of fluoride reduces caries by what percent?

A

25-50%

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5
Q

What is the concentration of fluoride in mouthrinse

A

0.05

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6
Q

What syndrome results from failure of neural crest cell migration resulting in micrognathia

A

Treacher Collins

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7
Q

What craniofacial anomaly involves skeletal, neuromuscular and soft tissue components of the first and second branchial arches

A

Hemifacial Microsomia

**Key: 1st and 2nd branchial arches

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8
Q

What structure limits expansion of the SARPE

A

Coronoid Process (Zygomatic buttress was not an option)

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9
Q

What is associated with wormian bones in the cranium?

A 
Cleidocranial dysplasia
Acronym: PORKCHOPS
P: pyknodysostosis
O: Osteogenesis Imperfect
R: Rickets
K: Kinky hair syndrome
C: Cleidocranial dysostosis
H: Hypothyroidism/hypophosphatasia
O: Otopalatodigital syndrome
P: Primary acroosteolysis...
S: Syndrome of Downs
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10
Q

What does the frontonasal process not contribute to?

A

Maxillary process

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11
Q

What do you use for the occlusal plane in Wits analysis

A

Functional occlusal plane

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12
Q

Parotid only contributes what percentage of saliva?

A

20%

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13
Q

Which Class II functional appliance proclines incisors more: Herbst or MARA

A

Herbst

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14
Q

Which commonly causes non working side interferences

A

Lingual inclines of mandibular buccal cusps (maxillary lingual cusps were not an option)

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15
Q

T/F, Women have more TMD than men

A

True

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16
Q

Why do you have more bone loss in active perio disease?

A

Decreased osteoblasts due to inflammation

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17
Q

Is missing teeth more common in males or females?

A

Females

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18
Q

What is the direction of force and amount of force per side for facemask

A

15-10 degree down

Want 800g of force or 400 g/side

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19
Q

U2 width is what percent of U1 width?

A

60 or 75

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20
Q

Which is not a risk factor for TMD?

A

Posture

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21
Q

Condyles should be in what position for stability?

A

Supero-anterior (if not there, most superior is option)

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22
Q

Lip bumper gains in arch perimeter are primarily due to what?

A

proclination of incisors

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23
Q

What is most highly correlated with root resorption?

A

History of previous root resorption

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24
Q

T/F, Self-tapping implants have better success than self-drilling

A

False

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25
Q

What wire is least effective in producing torque

A

Martensite NiTi (this is classic NiTi)

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26
Q

Describe the force and direction of Protraction facemask

A

400g per side

Below occlusal plane

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27
Q

List the teeth in order of permanent tooth agenesis

A

3rd molars > L5’s > U2’s > U5’s

Female much more often than male

28
Q

According to Bjork’s study on mandibular rotation, what doesn’t happen during average person during growth?

A

Condyle grows up and forward
Deposition of bone on inferior surface of ramus
**Need to confirm

29
Q

According to Moss, what matrix provides translatory growth?

A

Capsular matrix

30
Q

How long do corticotomy effects last?

A

4 months (may take 6 to 24 months to subside)

31
Q

If you double the diameter of SS wire, how does the strength increase?

A

increases 8x

32
Q

In what percent of children with bilateral condylectomy can you expect normal mandibular growth?

A

80%

33
Q

Pt. has a 2 mm anterior slide, what is the best way to finish

A

Class II elastics

34
Q

Class II Div 2 typically has all of the follow except?

A

Narrow maxillary arch

35
Q

Who was the first president of the ABO

A

Ketchum

36
Q

ABO Cast-Radiograph examination doesn’t evaluate what?

A

Overbite

37
Q

When you can’t use heat sterilization, what should you use?

A

Hydrogen Peroxide vapor

38
Q

Where does apposition not occur on the maxilla?

A

Anterior??

There were not choices for superior and anterior

39
Q

Why does a CBCT with a small voxel size require higher radiation exposure

A

Small voxels need a greater number of photons so it can produces a higher quality image

40
Q

Secondary palate closes at what time?

A

8-12 weeks

41
Q

T/F, Dentinogenesis imperfecta is autosomal dominant and affects 1/8000 of population. It only affects permanent dentition

A 
True
False (it does affect primary teeth)
42
Q

Which muscles are involved in frowning

A
  • Platysma
  • Orbicularis oculi
  • Corrugator supercilii
  • Procerus
  • Orbicularis oris
  • Mentalis
  • Depressor anguli oris
43
Q

Which muscles are involved in smiling?

A
  • Zygomaticus major
  • Orbicularis oculi
  • Levator labii superioris
  • Levator anguli oris
  • Risorius
  • Zygomaticus minor
44
Q

What muscle forms the floor of the mouth

A

Mylohyoid

45
Q

RPE expands all sutures except:

A

Premaxilla

46
Q

Percent of retrognathic mandible in class 2 population

A

75%

47
Q

T/F,

1) Bisphosphonate decreases rate of tooth movement and relapse
2) Bisphosphonate will accumulate in hydroxyapatite

A

T

T

48
Q

Neural Crest cell migration abnormal development that effects pharyngeal arch 1, 2 and effects both maxilla and mandible

A

Treacher Collins

49
Q

Muscle that holds disc-condyle normal relationship

A

Superior lateral pterygoid

50
Q

What is optimal inclination of incisors relative to occlusal plane when doing anterior teeth bridge

A

perpendicular

51
Q

What characteristic is not found in Class 2 Div 2

A

Narrow palate

52
Q

Where is CPR performed in children

A

lower 1/2 of sternum

53
Q

What is the CPR rate in children

A

100 times/min

54
Q

The main etiologies of TMD except:

A

Head position

55
Q

What is the origin of pain when a patient identifies pain from right TMJ to right masseter and go across the midline to left border of mandible

A

Psychogenic origin

56
Q

If you have equipment sensitive to heat, what do you use?

A

Vapored Hydrogen Peroxide

57
Q

When A-NiTi changes to M-NiTi with small stress and large deflection, what is it called?

A

Phase transformation

58
Q

What is the most effective to correct skeletal open bite

A

Posterior maxillary impaction

59
Q

Increase TAD stability how?

A

TAD diameter & Bone quality
OR (not sure..)
Bone quality & Bone density

60
Q

Which bone contributes to growth of the orbit

A

Lacrimal

61
Q

What cell does not derive from neural crest cell

A

Ameloblast

62
Q

Bolton ratio is not associated with what?

A

Transverse problems

63
Q

What does not increase during tooth movement

A

Neocytokine

64
Q

Intake of 1 ppm fluoride will prevent what % of caries incidence

A

25-50%

65
Q

If folic acid is intaken during pregnancy, it will reduce what percentage of babies with cleft lip/palate

A

30%

ABO Written Exam (24 decks)

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