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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
Leveling curve of spee
Reverse curve of spee archwire erupt teeth in middle segment
26
Bite plane can be used to
Erupt posterior teeth for deep bite | Anterior bite plane
27
Upper intrusion wire
Lift anterior teeth and Gingiva up
28
Lower intrusion arch
For dental deep bite Same concept as upper
29
Ankylosed Primary Teeth with successor
Usually exfoliate on time and situation is resolved
30
Primary teeth without successor ankylosed teeth
Risk periodontal injury if not removed early
31
transverse problems can be
Dental or skeletal
32
Skeletal transverse problems
True facial asymmetry Maxillary constriction
33
Dental transverse problems
Posterior crossbite
34
Most common cause of facial asymmetry
Mandibular shift Cr-CO
35
Maxillary skeletal constriction treatment
Near adolescent and adolescents | RPE or SPE
36
RPE adjustment
1-2 quarter turns/day 2-4 weeks
37
SPE adjustment
1 turn every other day 4-8 weeks
38
Banded expanded delivery
Fit passively/cement/active
39
Delivery bonded expander
Try in Bond Activate
40
Expander problems
Pain Soft tissue irritation Diastema
41
Heavy Forces (rapid or slow)
Adolescent Adult Jack screw expansion device
42
relative light forces expander
Primary and mixed dentin Lingual arch type Tx months - W arch - Quad helix
43
Posterior cross bites if its dental
Retained primary teeth Crowing/tipped teeth
44
CR=CO Symmetric max arch Dx and Tx
Bilateral maxillary constrain | Bilateral maxillary expansion
45
Cr/=CO Symmetric max arch DX? TX?
Bilateral maxillary constriction | Bilateral maxillary expansion
46
CR=CO Asymmetric max arch DX? TX?
Unilateral maxillary constrain | Asymmetric maxillary expansion
47
Central grooves should
Line up
48
Posterior crossbite prevalence
5%
49
Posterior dental crossbite rational for Tx
Improve premolar position Reduce abrasion increase arch perimeter Elimante CR-CO shifts
50
Dx: bilateral max constriction | Tx?
W arch
51
W arch anchorage
Reciprocal -teeth and bones on each side equal | -can be designed asymmetric arches if the case has a true unilateral posterior cross bite
52
W configuration does what
Increases length of wire Which increases flexibility
53
W arch wire
036 SS -other material would not produce enough forces across the suture
54
Orthopedic forces _____x greater than orthodontic
10
55
How to prevent patient compliance issues with W arch
Cemented bands
56
W arch force is applied near _____ not through
Palatal CEJ Center of resistance (higher)
57
Where would W arch compression be
Facial surfaces of molars
58
W arch dental vs skeletal effects
50/50
59
Dx bilateral max constriction Finger habit To?
Quad Helix
60
Quad Helix anchorage type
Reciprocal | -can make asymmetric
61
Quad helix wire
038 SS Cemented Bands
62
Dx max lingual and Mand facial displacement To
Max and mand dental movement with cross elastics
63
Cross elastics
reciprocal forces Extras on and crossbite correction
64
Class III skeletal
Straight or concave profile AND | Molar Class III and 0 or negative overjet
65
Class III relationship
Max return on Mandibular protrusion
66
Skeletal class III tendencies cephalmoteric
SNA reduce SNB increased ANB reduced
67
SNA
Anterior posterior position of maxilla Class III smaller angel
68
SNB
Angulation of mandible Class III larger =more protrusuve
69
ANB
Difference between maxillary and mandible ``` If very large class II Small or negative class III ```
70
FH
More proclined class II More reclined Class III
71
Pseudo class III
A-P shift CR and have to shift to CO
72
Double Helical Cantilever wire
Stainless steel round wire .022
73
Double Helical Cantilever double helix to
Increase length of wire to increase rang and springiness but decrease stiffness
74
Double vs Single cantilever
Easier to adjust further increase in wire length in constrained space
75
Hayley with double helical cantiveler force
Applied on lingual surface of crown Not through Cres Tipping force, force is coronal to cres
76
Hawley with double helical cantilever retention
Is provided by the Adams clasp
77
If you are moving a tooth with a Hawley with double helical cantilever facially on what surfaces with the PDL be compressed?
Below Cres on facial of root | Above Cres on lingual of root
78
Patient needs tipping AND rotation of maxillary tretoclined central incisors
Bonded fixed appliance
79
Bonded fixed appliance for anterior crossbite
Material Niti .014, .016 round wire
80
Bonded fixed appliance biomechanics
Force applied on facial surface of crown not through Cres Tipping forces Retention-from brackets and bands
81
Bonded fixed appliance where is the PDL compressed on the lateral and central incissors
Central incisor moving facial Lateral incisor moving lingual
82
Bodily movement for anterior crossbite correction (a-p)
Need a fixed appliance Need a rectangular wire that engages the brakcter (Mesioditally bodily movement with a round wire)
83
Anterior open bite habit related
Thumb and finger | Pacifier
84
Basic reflexes
Rooting Placing Sucking
85
Sucking
In utero Serves as postpartum prep Lost during first year of life
86
Nursing
Provides initial nutrition Usually supplemented with other foods at 6 months ends at 121 months
87
Infantile swallow
Tongue to lower lip Jaws apart Lips together
88
Adult swallow
Teeth together Tongue to palate Lips relaxed
89
Adult swallow appears
3-10 years
90
Non-nutritive sucking
Normal childhood behavior More common in females
91
Non-nutritive sucking accompanies
stress boredom fatigue May calm preterm infants
92
Non-nutritive sucking decreases
crying induced hypoxia
93
Equilibrium theory
Light continuous forces move teeth AND Elimination of light contour forces moves teeth
94
Non-nutritive sucking Force direction
Max-labial force-dental protrusion Mand-Lingual force-dental retrusion Vertical force can lead to o0pen bite Posterior cross bite from constriction
95
Digit Habits
Increased overjet Open bite asymmetric or symmetric Maxillary constriction Proclined upper and retro lined lower
96
Digit habit treatment options
Counseling Rewards Reminders Adjunctive therapy
97
Intraoral reminder appliance principles
``` Not punishment Must be in mouth to work Requires excellent retention Must obstruct habit Patient comfort is crucial Soft tissue compatibility ```
98
Reminder appliance therapy maintain _____ months following termination
6 months
99
Dental effects pacifiers
Symmetric open bite | Maxillary constriction

Ortho Part B (4 decks)

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