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Ortho Part B > Class 4 > Flashcards

Class 4 Flashcards

1
Q

Choice of treatment for skeletal malocclusions

A

Growth Modficiation
Camo
Surgical treatment

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2
Q

Sites of facial growth

A 
Sutures 
Nasal Septum
Synchondroses
Condyle
Alveolus
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3
Q

Nasal septum will affect ____ but not ____

A

Anterior posterior

Vertical

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4
Q

Synchondroses will not have enough

A

Cranial base

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5
Q

Need to have _____in mandible for it to grow

A

Function

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6
Q

Alveolus grow

A

Lateral and upward

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7
Q

Good modifiable growth sites

A

Sutures

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8
Q

Poor growth sites

A

Synchondroses

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9
Q

Questionable growth site

A

Nasal septum

Condyl

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10
Q

Requirements for growth modification

A

Able to place force

Growing patient

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11
Q

Condyles require function including

A

Translation for growth modification

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12
Q

Alveolus requires _____ or _____for growth

A

Teeth

Functioning unit

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13
Q

Rapid growth

A

12-14 males

10-12 females

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14
Q

Face and bodies are _____ in growth timing

A

Loosely related

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15
Q

Differential timing and amount: Nose

A

Male more than female

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16
Q

Differential timing and amount: Lips

A

Grow vertically more than skeleton

More lip competence as you get older
Less protrusive as you age

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17
Q

Differential timing and amount: Chin

A

Males more chin butt

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18
Q

Differential timing and amount: late growth

A

Maxilla tends to be down

Mandible tends to be forward

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19
Q

Profile analysis difficult for children

A

Under 6

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20
Q

What class is difficult to use profile analysis

A

Class III

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21
Q

Profile analysis can be difficult when ____ problems are present

A

Vertical

22
Q

Last plane of space to stop growing

A

Vertical

23
Q

First to stop growing

A

Transversely

Need to stop posterior cross bites early

24
Q

Class II maxillary protrusion

A

Favor headgear

25
Q

Maxillae most affected by

A

Head gear

26
Q

Mandible most affected by

A

Headgear and functional appliances

27
Q

Class III maxillary retrusion treatment

A

Face mask

Functional appliances

28
Q

Face mask

A

12-14 oz force

Elastics go in mouth pull for award. Supported by forehead

Sometimes mandible goes back and down to create more convex

29
Q

Class III Mandibular Protrusion

A

Functional appliances

Chin Cup

30
Q

Chin cup

A

Limited long term. Good short term

31
Q

Transverse skeletal contributions maxillary constriction

A

Opening of mid palatal suture

Lingual arch type in primary and mixed dentin

32
Q

RPE for

A

Near and post adolescent

33
Q

Can skeletal changes be made

A

Will go back a little

34
Q

Is early Class II TX beneficial

A

Restrain the maxilla
-Head Gear
Grow mandible
-functional appliance

Early mixed dentin is no benefit to ultimate growth over late mixed dentin

35
Q

Is class III Tx beneficial

A

Grow the maxilla

  • before 10
  • Emerging long term data suggests Tx must be limited to max retrials
  • 30% fail
  • Simulatneous exanpsion questionable

Restric the mandible
-temp benefit

36
Q

It appears transverse skeletal and dental changes

A

Can be made and maintained

37
Q

When is early treatment justified

A

Class II
-esthetics or trauma reductions

Class III
-true max deficiency

Posterior crossbite
-with functional shifts and arch length shortages

38
Q

Camouflage treatment is good for ______ or ______patients

A

Nongrowing

Slow growing

39
Q

Camouflage traditional preference

A

Female Class II

Male Class III

40
Q

New Camouflage data

A

Basically male better for everything except moderate class II

They are equal

41
Q

Antero-Posterior Surgical solutions

A

Le Fort 1
BSSO
Genioplasty

42
Q

Long Face

A 
Vertical maxillary excess
Steep mandibular plane
Short ramal height
Increased lower face height
An open bite
43
Q

Short face

A

Vertical deficiency
Low mandibular plane
Decreased lower face height
Often a deep overbite

44
Q

Transverse surgical solutions

A

SARPE
2 piece Le Fort1
Mandibular midline osteotomy
Distraction osteogenesis

45
Q

The main driving force for new bone formation

A

Distraction

46
Q

Ossification mode

A

Intramembranous endochondral and transchondroid

47
Q

_____ is critical for Do site bone formation

A

Periosteum

48
Q

DO relies on

A

Angiogenesis

Blood supply

49
Q

Distraction factors

A 
Latency time
Distraction time (1mm/day)
Consolidation time ( double the duration of distraction phase)
50
Q

Bone factors

A

Blood supply
Mesenchymal cells
Periosteum

51
Q

Mechanical factors

A

stability of the DO site

Functional loading

Ortho Part B (4 decks)

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