Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Orthodontics Exam1 > Exam 1 > Flashcards

Exam 1 Flashcards

1
Q

When does the initiation of the entire dentition begin?

A

During the 2nd month in uterine

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

Does the lamina grow facially or lingually to the enamel organ of deciduous teeth?

A

Lingually

(Hint it grows in the simplest direction the one with one name baby teeth (deciduous) can’t remember 2 names

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

When does the 1st permanent molar develop?

A

4 months in utero

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

2nd permanent molars develop when?

A

1yr old

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

3rd permanent molars (wisdom teeth) develop when?

A

4-5yrs old

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

What is the Field Theory(Butler) relating to the pattern of dentition?

A

There are 3 morphological fields: -incisor -canines -premolars/molar

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

Sequence of eruption of primary dentition. (Think chart)

A 
Central: mand 8months max 10 months
Lateral:  max 11 months
mand 13
1st molar: 16 months BOTH max&Man
Canine: max 19 man 20
Second molar: mand 27
Max 29
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

In order to effectively use functional jaw orthopedics what is imperative for correction.

A

The presence of growth

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

What are the effects of the treatments with Twin Block Appliance

A

Brings mandible toward and maxilla backwards for class 2 correction

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

Etiology(cause) of malocclusion?

A

Genetic
EmbryologicAl
Antenatal
Congenital and postnatal

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

The definition of Classification:

A

The morphologic description of dental, skeletal,

and soft tissue deviations from the norm.

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

Edward Ange

A

Developed orthodontics as a specialty

Developed ‘edgewise appliance”

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

According to Angle ‘the key to occlusion” is

A

Maxillary 1st molars

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

Describe the Line of occlusion

A

a smooth curve
passing through the central fossa of
each molar and across the cingulum
of the upper canine and incisors

same line runs along the buccal
cusps and incisal edges of the lower
teeth

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

Class 1 malocclusion

A

Has the same relationship as normal occlusion

but Line of Occlusion -(twisting, maloppoosed)

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

Class II Malocclusion

A

lower molar position distally to upper

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

Weakness in Angles Theories

A

Angle assumed that 1st molar was always in the correct location
Gave no skeletal consideration
His classifications only considered the Anterior-posterior displacement

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

What are the percentage of natural occurrence of Angle’s 4 groups?

A 
According to NHANES survey the most prominent is 
Class 1 malocclusion 50%
Normal occlusion 30%
Class II = 15% 
ClassIII= less than 1%
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Brachyfacial type

A

A broad square face with a strong chin,
flat MP(mandibular plane), a straight
face

20
Q

What would happen if anterior crossbite was untreated?

A

Warping of the alveolar ridges

Periodontal problem

21
Q

Why is treating anterior crossbite important?

A

Because primary teeth positions influence the developing permanent tooth buds.

22
Q

Eruption of first molars

A

Happen 14months mandibular
13 month maxillary

Transition from infantile swallowing to more mature pattern

23
Q

Eruption of canines

A

17 months mandibular
16 months maxillary
Max cusp tips distal to canine

24
Q

Eruption of second molars

A

23 months mandible
25 months maxilla
Definite occlusal plane

Causes stabilization of dentition

25
Q

Gum pads in the neonatal stage

A

Become alveolar processes at time of birth

Upper arch•houseshoe shaped
Lower arch • U shaped

Pink in color, firm an covered by a dense periosteum

26
Q

Pacifier use beyond age 24 months is associated with

A

Significant greater prevalence of posterior crossbite

27
Q

Pacifier extended 48 months or longer

A

Cause the greatest change in dental arch an occlusal characteristics

28
Q

The tip of the tongue is responsible for what sounds

A

T d

S, z

29
Q

When do we translate to adult chewing pattern?

A

About age 12

Related to eruption of permanent canine

30
Q

In order for newborns to open airway

A

The mandible must be positioned forward and downward, away from the posterior pharyngeal wall

Allows air to move through nose pharynx and lungs

31
Q

Adult swallow

A
  • relaxed lips
  • tongue against the alveolar process behind maxillary incisors
  • posterior teeth brought into occlusion during swallowing
  • 60% achieve at age 8

If sucking persist no adult swallowing

32
Q

Suckling vs sucking

A

Suckling to obtain milk
Is small nibbling movement of lips
Stimulate smooth muscles in lactic gland to contract an secrete

•SUCKING
Draw

33
Q

successional teeth

A

Replace deciduous predecessors
incisors,canine & premolar
formation between 20 weeks in utero and 10 months of age

34
Q

Accessional teeth

A

No deciduous predecessors
molar
Formation begins between 14 weeks in utero and 5 yrs of age

35
Q

Nolla stages

A

Serial radiographs to evaluate dental development

10 stages of tooth development

36
Q

what are the most important Nolla stages

A

Stage 2- Calcification

Stage 6- crown completion

37
Q

Nolla stage 6

A

Movement begins when crown formation complete

38
Q

Nolla’s stages 7~8

A

emergence at vary degree of root development
canine 2/3 of root formed
premolar: 1/2 of root formed
Molar: 1/3 of root formed

39
Q

Nolla’s stage 9

A

Occlusion achieved

Root almost completed but apex still open

40
Q

What are the developmental processes during eruption of successional teeth

A 
Resorption of primary tooth
elongation of the permanent tooth root
Increase in alveolar height
Movement of permanent tooth occlusally 
Less growth in  the inferior border of the mandible
41
Q

What are the stages of tooth eruption

A

Pre-emergent eruption: eruption movement in the bone

Post emegent eruption: passing through alveolar crest

42
Q

Pre-emergent eruption

A

begins with root formation
1st step: resorption of bone and primary tooth roots
2nd step: Eruption mechanism itself in the direction where the path has been cleared

43
Q

Post - emergent eruption

A

Post-emergent spurt

Juvenile occlusal equilibrium

Adult occlusal equilibrium

44
Q

Post-emergent spurt

A

Rapid eruption after eruption into mouth

45
Q

Juvenile occlusal equilibrium

A

Slowing of eruption after contacting with opposing dentition
Rate of eruption equal to the rate of vertical growth of mandibular ramus
Spurts in eruption accompanies spurts in jaw growth

46
Q

Adult occlusal equilibrium

A

Continue to erupts at an extremely slow rate

Compensate for loss of tooth structure

Orthodontics Exam1 (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions