Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Orthodontics Exam1 > exam2 > Flashcards

exam2 Flashcards

(69 cards)

Start Studying
1
Q

Treacher Collins is caused by

A

diminished neural crest cell migration.
occurs at 7th week of intrauterine life.. genetic origin
disturbance in 1st brachial arch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

FAS

A

fetal alcohol syndrome

germ layer formation & initial organization of structures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

germ layer formation & Initial organization begins on what day

A

Day 17

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

crouzon Syndrome

A

prenatal fusion of the superior and posterior sutures of the maxilla along the wall of the orbit.
Produces distortion of cranial vault

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Pierre Robin Syndrome

A

A fetus head is flexed tightly again
respiratory problems at birth that may require
some children have

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Hemifacial Microsomia primary cause

A

Early loss of neural crest cell

6 weeks after conception

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Treacher Collins characterized by

A

generalized lack of mesenchymal tissue in lateral part of face
Underdevelopment of maxilla& mandible
Absence of malar bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

intrauterine molding

A

refers to pressure against the developing face prenatally.

can lead to distortions in rapidly growing face.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Torticollis

A

a twisting of the head caused by excessive tonic contraction of neck muscles on one side.
Affects the entire face not just the mandible.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

facial Asymmetry

A

Masseter muscle was largely missing on left side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Decrease in tonic muscle activity results in

A

too much vertical growth, excessive eruption of posterior teeth. and severe anterior open bite

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Mesiodens

A

supernumerary teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

most common mesiodens

A

appear in Maxillary Midline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The neural tube forms

A

during days 18-23 in utero

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

achondroplasia

A

deficient growth of cartilage found in humans& dogs

dominant gene..so sometimes only partially expressed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

anchondroplasia is due to

A

deficient growth the synchondroses of maxilla

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

achondroplasia results

A

results in humans short limbs cranial base does lengthen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

modern reason for crowding

A

Increased outrbreeding

Crowding caused by mix between heredity and environment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

normal tongue thrust is associated with

A

with normal teeth together swallow
History of thumb sucking and
tongue. thrusting forward to open bite.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

tongue crib

A

habit appliance
fixed to lingual arch and soldered to upper 1st molar bands
prevents digit sucking habit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

myofunctional bead

A

tongue training appliance

hait appliance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

bluegrass

A

digit sucking appliance

teflon roller trains tongue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

in severe maxillary

A

Maxillary teeth fit inside the mandibular

but no mandibular shift

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

treatment of crossbite

A 
early correction(primary if must) for Posterior crosstie&mild anterior cross bite.
surgery for severe anterior crossite
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
most common transverse discrepancy intramurally
Posterior crossite | the rule of thumb .. 3 or more than 3 teeth in crossbite
26
Definition of crossbite
Abnormal buccolingual or labiolingual relationship of teeth
27
diagnosis of posterior cross bite
Dental: Functional shift,Lingual inclination of maxillary dentition,,, Adequate width of maxilla and mandibular apical base Skeletal:No functional shift, Narrow palatal vault, buccal inclination of max dentition
28
what is orthodontic triage for chlldren
1. syndrom/developmental abnormalities 2. Facial profila analysis 3. Dental development 4. Space problems" 5. Other occlusal discrepancies
29
true or false | tooth eruption is well correlated with skeletal growth
False | tooth eruption is not well correlated with skeletal growth
30
Nance holding arch
space maintainer of upper arch prevents medial molar drift can be used as anchorage
31
drawback of Nance holding arch
tissue irritation
32
Indication for Partial Denture
Most useful when more than one tooth has been lost per segment & permanent incisors have not erupted yet. Posterior space maintenance and replacement of anterior teeth for aesthetics
33
advantages of partial denture
replaces occlusion function
34
Pendulum is indicated for
regain 4-5 mm of space used to correct class ii molars 1a class 1 skeletal case used to distalize max 1st molars
35
distal shoe
space maintainer -permanent molars and canines indicated when 6s have not erupted and E's has been lost prematurely Metal or plastic guide plane is attached to a band or from
36
Headgear
Extraoral appliance with two components
37
Serial extractions Advantages
Reduces anterior irregular
38
Dental cross bite
has a normal maxillary width the changes are do to movement of canine
39
the W arch
Correction of dental crossbones moves primary and permanent teeth. maxillary fixed movable appliance(expand b4 insertion) used when 4-5mm of expansion Maxillary -bucul
40
cross bite with functional shift is a sign of what orgin
dental | also should have adequate width of maxilla and mandibular base
41
two considerations in determining optimal treatment time
Effectiveness: how well does it work | efficiency : what is the cost benefit ratio
42
When is early treatment indicated in class 1 problem
in posterior crossbite WITH mandibular shift | crowding : early correction ism more controversial
43
early treatment indicated in class 2 problems
Mandibular prognatismo : effects to restrain at early stages Maxillary deficiency : facemark treatment is successful if done early
44
horseshoe shaped acrylic plate fitting along the lingual surfaces of teeth
Schwartz plate | expands max or mand arch
45
Hyrax expanders
Corrects SKELETAL cross bite stainless steal bands attached to maxillary 1st premolars and 1st molars ..band connected to expanding screw via ridge wires
46
one quarter. turn of a screw=
.25mm
47
what I considered slow expansion
1mm/WK or 10mm/10weeks(rapid an slow same over 10 wk period)
48
rapid expansion is considered
0.5mm/DAY. 10mm/10WKs( same as slow over 10wks) | creates 10-20 lbs of weight across suture
49
hyax expanders
attach to 1st maxillary molars and premolars | correct SKELETAL posterior crossbite
50
bonded hyax expanders
bonded to enamel Skeletal posterior crossbite correct controls bite opening extreme cases
51
when is treatment of posterior crossbite not indicated
if first molars with erupt in 6 months or less
52
1mm of posterior expansion =_ arch length
.7 increase in arch length
53
drawbacks of Maxillary expansion
Extrusion causing Cuspal Interference & | Mandibular rotation
54
extrusion of the palatal cusp with decrease open bite
extrusion of palatal cusp will increase open bite
55
max expansion is not indicated for what face type
dolicofacial
56
Salzmann classifaction
Group 1- prenatal | group 2- post natal
57
Headgear
space regaining | good option for bilateral tipping or oddly movements
58
lip bumper
U shaped stainless steel wire | Anterior portion may carry a plastic or acrylic pad 2-3mm away from the alveolar process of lower incisors
59
Lingual arch indications
Bilateral space due to lingual incisor tipping limited space regaining moderate arch expansion
60
how do you assess results of early treatment
Removal and or control of etiologic factors Satifactory tooth positions and space management satisfactory corruption of skeletal problem
61
when is it recommended to be seen by orthodontist
age 7
62
trans-palatal arch(TPA)
Maxillary fixed/fixed-removale appliance Space maintainer Extends from one maxillary 1st molar to the opposite max 1st molar
63
Band and loop is indicated when
indicated for unilateral loss of primary molar when premolar will not erupt for more than 6 months
64
mandibular space regain consist of
adjustable lingual arch and lip bomber | Removable appliance and finger springs
65
removable appliance in Molar distiizatoon
Helps regain 2-3 mm in maxillary space great with unilateral problem USUALLY regains 2-3mm baby tipping the max 1st molar distally
66
space supervision
utilization of leeway space to unravel lower anterior crowding do not begin until lower canines and 1st premolars show 1/4-1/3 of root formed
67
extreme maxillary constriction
max inside mandible | no functional shift
68
cleft lip and palate cause by
failure of fusion of medial and lateral process
69
Pendex
molar distilization appliance

Orthodontics Exam1 (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions