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Ortho Part B > Class 1 > Flashcards

Class 1 Flashcards

1
Q

Vertical problems usually _____ or ______

A

Skeletal

Dental

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2
Q

Vertical problems due to skeletal

A

Long Face

Short Face

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3
Q

Vertical problems due to dental

A

Anterior open bite

Deep bite

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4
Q

Anterior open bite can be

A

Simple/transitional

Habit related

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5
Q

White people have

A

Deep bites

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6
Q

African have

A

Open bites

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7
Q

Long face with open bite the variation is in

A

The lower face

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8
Q

Long face with no open bite the variation

A

Still in lower face

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9
Q

Short face often with

A

Deep bite

Variation in lower face

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10
Q

Vertical face form

A 
Mandibular place
Facial proportions
Lip Competence
Labiomentl fold
Teeth of upper lip
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11
Q

Nasolabial angle

A

90

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12
Q

Labiomental angle

A

Obtuse

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13
Q

_____ the angle between Frankfurt and mandibular the more likely it is to be a long face

A

Greater

Smaller:short face

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14
Q

%Face height

A

Na to ME

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15
Q

Y axis

A

Frankfurt or sell to nasion and how that intersects the line from sell to nathion

The larger =long face
Smaller angle=short face class III
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16
Q

Dental Open bites usually from

A

Canine to canine

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17
Q

Does everyone have an open bite

A

Yes closes prior to adolescence

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18
Q

Complex open bite extends

A

Past anterior teeth

Fails to close

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19
Q

Complex open bites usually associated with

A

Skeletal problems

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20
Q

Dental open bites treatment

A

Erupt anterior teeth
Intrude posterior teeth
Use facial proportions and lip to tooth information for objective judgements

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21
Q

Erupt anterior teeth

A

Anterior vertical elastics

When anterior esthetics allows it

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22
Q

Intrude posterior teeth

A

High pull headgear

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23
Q

Antior open bite related to habits

A

Thumb

Pacifier

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24
Q

Dental deep bite treatment

A

Posterior eruption
Level curve of spee
Intrude antiorer teeth

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25
Q

Leveling curve of spee

A

Reverse curve of spee archwire erupt teeth in middle segment

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26
Q

Bite plane can be used to

A

Erupt posterior teeth for deep bite

Anterior bite plane

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27
Q

Upper intrusion wire

A

Lift anterior teeth and Gingiva up

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28
Q

Lower intrusion arch

A

For dental deep bite

Same concept as upper

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29
Q

Ankylosed Primary Teeth with successor

A

Usually exfoliate on time and situation is resolved

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30
Q

Primary teeth without successor ankylosed teeth

A

Risk periodontal injury if not removed early

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31
Q

transverse problems can be

A

Dental or skeletal

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32
Q

Skeletal transverse problems

A

True facial asymmetry

Maxillary constriction

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33
Q

Dental transverse problems

A

Posterior crossbite

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34
Q

Most common cause of facial asymmetry

A

Mandibular shift Cr-CO

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35
Q

Maxillary skeletal constriction treatment

A

Near adolescent and adolescents

RPE or SPE

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36
Q

RPE adjustment

A

1-2 quarter turns/day 2-4 weeks

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37
Q

SPE adjustment

A

1 turn every other day 4-8 weeks

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38
Q

Banded expanded delivery

A

Fit passively/cement/active

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39
Q

Delivery bonded expander

A

Try in
Bond
Activate

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40
Q

Expander problems

A

Pain
Soft tissue irritation
Diastema

41
Q

Heavy Forces (rapid or slow)

A

Adolescent
Adult
Jack screw expansion device

42
Q

relative light forces expander

A

Primary and mixed dentin
Lingual arch type
Tx months

  • W arch
  • Quad helix
43
Q

Posterior cross bites if its dental

A

Retained primary teeth

Crowing/tipped teeth

44
Q

CR=CO
Symmetric max arch

Dx and Tx

A

Bilateral maxillary constrain

Bilateral maxillary expansion

45
Q

Cr/=CO
Symmetric max arch

DX?
TX?

A

Bilateral maxillary constriction

Bilateral maxillary expansion

46
Q

CR=CO
Asymmetric max arch
DX?
TX?

A

Unilateral maxillary constrain

Asymmetric maxillary expansion

47
Q

Central grooves should

A

Line up

48
Q

Posterior crossbite prevalence

A

5%

49
Q

Posterior dental crossbite rational for Tx

A

Improve premolar position
Reduce abrasion
increase arch perimeter
Elimante CR-CO shifts

50
Q

Dx: bilateral max constriction

Tx?

A

W arch

51
Q

W arch anchorage

A

Reciprocal -teeth and bones on each side equal

-can be designed asymmetric arches if the case has a true unilateral posterior cross bite

52
Q

W configuration does what

A

Increases length of wire

Which increases flexibility

53
Q

W arch wire

A

036 SS

-other material would not produce enough forces across the suture

54
Q

Orthopedic forces _____x greater than orthodontic

A

10

55
Q

How to prevent patient compliance issues with W arch

A

Cemented bands

56
Q

W arch force is applied near _____ not through

A

Palatal CEJ

Center of resistance (higher)

57
Q

Where would W arch compression be

A

Facial surfaces of molars

58
Q

W arch dental vs skeletal effects

A

50/50

59
Q

Dx bilateral max constriction
Finger habit

To?

A

Quad Helix

60
Q

Quad Helix anchorage type

A

Reciprocal

-can make asymmetric

61
Q

Quad helix wire

A

038 SS

Cemented Bands

62
Q

Dx max lingual and Mand facial displacement

To

A

Max and mand dental movement with cross elastics

63
Q

Cross elastics

A

reciprocal forces

Extras on and crossbite correction

64
Q

Class III skeletal

A

Straight or concave profile AND

Molar Class III and 0 or negative overjet

65
Q

Class III relationship

A

Max return on

Mandibular protrusion

66
Q

Skeletal class III tendencies cephalmoteric

A

SNA reduce
SNB increased
ANB reduced

67
Q

SNA

A

Anterior posterior position of maxilla

Class III smaller angel

68
Q

SNB

A

Angulation of mandible

Class III larger =more protrusuve

69
Q

ANB

A

Difference between maxillary and mandible

If very large class II
Small or negative class III
70
Q

FH

A

More proclined class II

More reclined Class III

71
Q

Pseudo class III

A

A-P shift

CR and have to shift to CO

72
Q

Double Helical Cantilever wire

A

Stainless steel round wire .022

73
Q

Double Helical Cantilever double helix to

A

Increase length of wire to increase rang and springiness but decrease stiffness

74
Q

Double vs Single cantilever

A

Easier to adjust further increase in wire length in constrained space

75
Q

Hayley with double helical cantiveler force

A

Applied on lingual surface of crown

Not through Cres

Tipping force, force is coronal to cres

76
Q

Hawley with double helical cantilever retention

A

Is provided by the Adams clasp

77
Q

If you are moving a tooth with a Hawley with double helical cantilever facially on what surfaces with the PDL be compressed?

A

Below Cres on facial of root

Above Cres on lingual of root

78
Q

Patient needs tipping AND rotation of maxillary tretoclined central incisors

A

Bonded fixed appliance

79
Q

Bonded fixed appliance for anterior crossbite

A

Material Niti

.014, .016 round wire

80
Q

Bonded fixed appliance biomechanics

A

Force applied on facial surface of crown not through Cres

Tipping forces

Retention-from brackets and bands

81
Q

Bonded fixed appliance where is the PDL compressed on the lateral and central incissors

A

Central incisor moving facial

Lateral incisor moving lingual

82
Q

Bodily movement for anterior crossbite correction (a-p)

A

Need a fixed appliance
Need a rectangular wire that engages the brakcter

(Mesioditally bodily movement with a round wire)

83
Q

Anterior open bite habit related

A

Thumb and finger

Pacifier

84
Q

Basic reflexes

A

Rooting
Placing
Sucking

85
Q

Sucking

A

In utero
Serves as postpartum prep
Lost during first year of life

86
Q

Nursing

A

Provides initial nutrition

Usually supplemented with other foods at 6 months ends at 121 months

87
Q

Infantile swallow

A

Tongue to lower lip

Jaws apart

Lips together

88
Q

Adult swallow

A

Teeth together
Tongue to palate
Lips relaxed

89
Q

Adult swallow appears

A

3-10 years

90
Q

Non-nutritive sucking

A

Normal childhood behavior

More common in females

91
Q

Non-nutritive sucking accompanies

A

stress boredom fatigue

May calm preterm infants

92
Q

Non-nutritive sucking decreases

A

crying induced hypoxia

93
Q

Equilibrium theory

A

Light continuous forces move teeth

AND

Elimination of light contour forces moves teeth

94
Q

Non-nutritive sucking Force direction

A

Max-labial force-dental protrusion

Mand-Lingual force-dental retrusion

Vertical force can lead to o0pen bite

Posterior cross bite from constriction

95
Q

Digit Habits

A

Increased overjet
Open bite asymmetric or symmetric
Maxillary constriction
Proclined upper and retro lined lower

96
Q

Digit habit treatment options

A

Counseling
Rewards
Reminders
Adjunctive therapy

97
Q

Intraoral reminder appliance principles

A 
Not punishment
Must be in mouth to work
Requires excellent retention
Must obstruct habit
Patient comfort is crucial 
Soft tissue compatibility
98
Q

Reminder appliance therapy maintain _____ months following termination

A

6 months

99
Q

Dental effects pacifiers

A

Symmetric open bite

Maxillary constriction

Ortho Part B (4 decks)

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