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ABO Part 1 > MF TREATMENT > Flashcards

MF TREATMENT Flashcards

1
Q

What is important to consider with black triangles?

A
  • Width:length ratio of the crowns
  • Root angulation
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2
Q

Is Bolton discrepancy associated with posterior transverse discrepancy?

A

No

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3
Q

How long does the regional accelerating phenomena induced during corticotomy last?

A

4 months

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4
Q

When to do serial extraction and what is the protocol?

A
  • Class I normal bite with severe crowding
  • Take out c’s and d’s then 4s before canine erupts (CD4)
  • Lower incisors should not be more upright than if you extract in late adolescence
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5
Q

Does extraction of U6s cause change to the soft tissue profile? How to correct Class II molar?

A
  • No
  • Nance for anchorage. Correct class II with reciprocal closure.
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6
Q

How much does archwidth and intercanine width increase primary to permanent? Arch length?

A
  • Archwidth and intercanine width increase 2-3 mm
  • Arch length decreases
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7
Q

How does expansion with RPE occur?

A
  • Does not affect pre-maxilla (fuses 3-5 yr)
  • Does effect circummaxillary, midpalatal, circumzygomatic
  • More anterior than posterior, more occlusal than nasal
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8
Q

How do we want the incisors for a Maryland bridge?

A

Perpendicular to the occlusal plane

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9
Q

What did the tetracycline study of implants show?

A

High turnover of lamellar (or composite) bone

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10
Q

What is not a concern for Class III lower premolar extraction?

A

Balancing interferences (No U7s)

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11
Q

How does periodontal disease cause bone loss?

A

Decreased osteoblasts in inflammation = more bone loss

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12
Q

What is the biggest complaint about canine substitution? What needs to be adjusted?

A
  • Difference in color
  • Adjust everything (mesial, distal, reduce incisal edge, reduce incisal lingual, slight mesial rotation, U2 bracket to decrease canine prominence, reduce mesial marginal ridge and decrease facial NOT distal marginal ridge
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13
Q

Missing U2 on one side and treating with canine substitution. What is not important in treatment planning?

A

The occlusion on the unaffected side?

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14
Q

Activation of fibroblasts?

A

Interleukin-1, Interleukin-8, Interferon-y
NOT Neocytokine

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15
Q

What will be seen in hyalinized areas of the PDL?

A

Fibroblasts, macrophages, osteoclasts, cementoblasts
NOT PMNs

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16
Q

What are stem cells able to do?

A

Self renew and differentiate into at least 2 different cell types

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17
Q

Collagen in the PDL is made up of _______ fibers. More cementum in the ______ region than the cervical region. PDL collagen turnover is _____ faster than gingival.

A
  • inelastic
  • apical
  • 2x
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18
Q

The absence or presence of a gingival papilla is ______ proportional to the distance of the contact point to the bone crest. The distance needs to be ____mm or less for the papilla to fill the embrasure.

A
  • Inversely
  • 5mm
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19
Q

What is least likely to relapse?

A

COS

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20
Q

What is the gold standard of grafts?

A

Connective tissue graft

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21
Q

Will midline relapse?

A

No

22
Q

Which fibers are most responsible for relapse? What other fibers should be included in CSF?

A
  • Supracrestal fibers
  • Transeptal fibers
23
Q

Which type of impacted canine is more likely genetic?

A

Palatal

24
Q

How can impacted canine eruption cysts damage adjacent teeth?

A

If it touches adjacent teeth

25
Q

What is tooth transposition associated with and what teeth are most common?

A
  • Tooth agenesis, microdonia, and peg laterals
  • U3/U4 most common, U3/U2 common, L3/L2 common
  • NOT associated with narrow palate and decreased palatal depth or arch length discrepancy
26
Q

How to measure maximum opening?

A

Incisal edge to incisal edge + overbite

27
Q

How to fix 2mm CR-CO shift?

A

Class II elastics

28
Q

What is true of arch forms? Caternary? Brader? Bonwill/Hawley?

A
  • Most are tapered
  • Loop of chain suspended from 2 hooks
  • Trifocal ellipse
  • Equilateral triangle + circle in anterior
29
Q

What to do if a vertical defect is detected early?

A

Extract primary 2nd molars

30
Q

When should treatment be performed for open bite? What procedure helps?

A
  • Early
  • Adenectomies: control excessive vertical growth due to change in mode of breathing (eliminates mouth breathing)
31
Q

What are some considerations when extracting a lower incisor?

A
  • Amount of crowding in the upper
  • Width of the maxillary lateral
  • Canine position/relationship
  • NOT position of midline
  • When to extract: lower crowding 5mm, end to end bite, Class I
32
Q

Advantage/Disadvantage of VRO for Class III surgery with TMD?

A
  • Disadvantage: Cannot do rigid fixation and condyle sags with wire fixation
  • Advantage: TMD and does not damage nerve
33
Q

How much should be extruded to maintain alveolar bone height?

A

1mm/week

34
Q

What can extraction of lower c’s lead to?

A
  • Lingual tipping of lower incisors
  • Distal drift of lower incisors
  • Increase in OJ and OB
  • NOT correct midline
35
Q

Where are the zeniths in the max anterior located?

A
  • Canine and central: distal to long axis
  • Lateral is centered
36
Q

What to do if cusps are steep?

A

Increase overbite

37
Q

Characteristics of hyperdivergent face with retrognathic mandible?

A

Prognathic maxilla, retrognathic mandible, max/mad dental protrusion, open bite, incompetent lips, steep MPA, long nose

38
Q

What are characteristics of open bite?

A

Decreased posterior facial height, decreased posterior cranial base, increased anterior facial height, decreased ramus height
NOT increase mand corpus length
- Tongue thrust is main etiologic factor
- If dental open bite, use vertical elastics

39
Q

What is ICON sealant/ProSeal?

A

Resin infiltrant for correcting demin

40
Q

Hierarchy of bone?

A

Woven —> Composite —> Lamellar —> Bundle

41
Q

Most common cause of asymmetry?

A

Trauma

42
Q

How many anatomical A points?

A

2

43
Q

Early treatment of open bite?

A

Posterior bite blocks or TADs

44
Q

What are primate spaces and where are they?

A
  • For incisor liability
  • Mesial to upper canines
  • Distal to lower canines
45
Q

What to do for ankylosed tooth with bone defect?

A

EXT

46
Q

Proper width/depth of pilot drill?

A
  • Width should be 0.2-0.5mm less than the implant diameter
  • Depth should be less to obtain proper initial mechanical stability
47
Q

What can make it difficult to get canine Class I?

A

Axial inclination

48
Q

In canine protected occlusion, which teeth are out of occlusion?

A

The maxillary teeth on the lateral excursion on the balancing side (non-working side). Working side is the side the mandible goes to.

49
Q

Can ortho treatment be initiated immediately after endodontic therapy?

A

Yes

50
Q

When to use traction if root of impacted canine is fully formed?

A

Immediately

51
Q

Ideal way to protract molar?

A

TADs

ABO Part 1 (14 decks)

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