Primary Dentition- FINAL Retrouvey

Question 1

Field of orthodontics treating the patient with mixed dentition (primary + permanent teeth)

Answer 1

Interceptive orthodontics

Question 2

How many deciduous teeth are in the primary dentition:

Answer 2

20

Question 3

Primary dentition + permanent molars=

Answer 3

mixed dentition

Question 4

The permanent molars erupt ____ to the primary dentition

Answer 4

distally

Question 5

____ replaces primary teeth

Answer 5

succedaneous teeth

Question 6

Permanent dentition (ideally) includes:

Answer 6

32 teeth

Question 7

Permanent teeth erupt from:

Answer 7

6-13 years old

Question 8

tooth eruption can be described as:

Answer 8

a very complicated process

Question 9

According to professor, what are the last primary max and mandibular teeth to erupt (THIS IS DIF FROM CHART)

Answer 9

canines

Question 10

Characteristics of deciduous dentition include:

A: ____ crown shapes
B: _____ spacing
C: No _____ of the incisors
D: Less variability in _____ than the permanent dentition
E: ____ changes with growth

Answer 10

A: symmetrical
B: interdental
C: angulation
D: occlusion relations
E: arch width

Question 11

Interdental spacing=

Answer 11

diastemas

Question 12

Describing the primary dentition like a picket fence would be describing the____ of the teeth.

Answer 12

angulation (90 degrees to the occlusal plane)

Question 13

Why are the occlusal relations less variable in primary dentition? (than in permanent)

Answer 13

because malocclusion have not yet been expressed

Question 14

At what ages do we see the arches grow bigger? (width)

Answer 14

0-2

Question 15

In primary dentition what measurements are symmetrical?

Answer 15

mesial & distal

Question 16

Interdental spacing in primary teeth is considered:

Answer 16

desirable/good

Question 17

What is a desirable interdental spacing value for primary teeth?

Answer 17

4mm

Question 18

a significant difference in size in the roots between the upper central and lateral incisors and even canines in the permanent teeth that will be replacing them:

Answer 18

incisor liability

Question 19

larger spaces found mesial to the upper cusps and distal to the lower cuspids:

Answer 19

primate spaces

Question 20

Primate spaces are found mesial to the ____ and distal to the ___.

Answer 20

upper cuspids; lower cuspids

Question 21

Rule #1 If there is no interdental spacing in the deciduous dentition…

Answer 21

crowding in the permanent dentition will occur (75% of the time)

Question 22

Crowding in the primary dentition results in:

Answer 22

100% chance for crowing in permanent dentition and even risk impaction

Question 23

Crowding in primary dentition (rare) may be caused by:

Answer 23

1. not enough bone
2. strong lip forces resulting in lack of development of dental alveolar bone

Question 24

____ between anterior primary teeth are important to get space for permanent incisor eruption

Answer 24

diastemas

Question 25

The upper incisors erupt to the ____ of primary teeth

Answer 25

labial/facial

Question 26

The lower incisors tend to erupt to the ____ of the primary teeth

Answer 26

lingual

Question 27

Describe the increase in arch size during the eruption of permanent incisors

Answer 27

no significant increase in arch size

Question 28

Because the upper incisors erupt to the labial/facial of the primary teeth, how does this effect the arch size?

Answer 28

arch size expands

Question 29

Because the lower incisors erupt to the lingual of the primary teeth, how does this effect the arch size?

Answer 29

arch size decreases

Question 30

The roots of primary teeth are:

Answer 30

symmetrical

Question 31

only ____ primary teeth are smaller compared to permanent teeth

Answer 31

anterior (incisors & canines)

Question 32

Since permanent teeth are typically larger than the anterior primary teeth, what issue do we run into?

Answer 32

incisor liability

Question 33

Some or all primary ____ teeth are larger than their successor

Answer 33

posterior

Question 34

The upper second premolar replaces the:

Answer 34

Upper second primary molar

Question 35

The upper second permanent premolar replaces the upper second primary molar, what size of teeth are involved?

Answer 35

Upper second permanent premolar= 7.0 mm Upper second primary molar= 8.2mm (1.2 mm difference)

Question 36

The lower second permanent premolar replaces the lower second primary molar, what size of teeth are involved?

Answer 36

lower second premolar= 7.0 mm lower second primary molar= 9.9mm (2.9 mm x2 =6)

Question 37

The difference in sizes between the posterior primary teeth and posterior permanent is an important aspect in:

Answer 37

interceptive orthodontics

Question 38

An imaginary surface that passes through the occlusion of the teeth:

Answer 38

occlusal plane (OP)

Question 39

The secret to orthodontic treatment is to create:

Answer 39

a desirable occlusal plane

Question 40

The surface of the occlusal plane is curved so it is strictly speaking, not a plane but is approximated by one straight line ____ view based on specific reference points within the dental arches.

Answer 40

lateral view

Question 41

Unlike the primary teeth, the permanent teeth are not ____ to the occlusal plane

Answer 41

90 degrees

Question 42

Forms in the PERMANENT dentition in response to the fact that our mandible goes through excursions:

Answer 42

curve of spee

Question 43

In the primary dentition, the curve of spee is:

Answer 43

flat

Question 44

If there is is a curve of spee in the primary dentition that is not flat this signifies:

Answer 44

severe malocclusion

Question 45

response of dentoalveolar process to the skeletal dysplasia or to function disturbance (are not fully expressed)

Answer 45

dentoalveolar compensations

Question 46

If you have a discrepancy between the maxilla and mandible in deciduous dentition, the level of the occlusal plane will be effected and the _____ will compensate

Answer 46

dentoalveolar process

Question 47

Describe the dentoalveolar compensations in the primary dentition:

Answer 47

very minimal because normally the maximal and mandible are in a low amount of growth

Question 48

If a malocclusion is diagnosed in the primary dentition, it will most probably:

Answer 48

get worse during growth

Question 49

Occlusal relations in the deciduous dentition: 1. upper and lower incisors are ___ 2. minimal __ & __ 3. upper canine tip is positioned in the ____ between the lower canine and first primary molar

Answer 49

1. vertical 2. overbite & overjet 3. embrasure

Question 50

As far as occlusal relations in the deciduous dentition, the upper canine tip is positioned in the ___ between the lower canine and the first primary molar

Answer 50

embrasure

Question 51

If your upper canine is well tucked into the embrasure between the lower canine and first primary molar this describes ___ occlusion

Answer 51

class I

Question 52

How do you measure overbite?

Answer 52

the amount of coverage of the lower incisor form the upper incisor

Question 53

Usually in the primary dentition, overbite = ____ percent

Answer 53

10-30%

Question 54

the amount of distance between the lower incisor and upper incisor from the lingual surface of the upper to the labial surface of the lower

Answer 54

overjet

Question 55

Typical overjet measurement in primary dentition is:

Answer 55

1-2 mm

Question 56

What provides the most interdigitation in the primary dentition?

Answer 56

canine

Question 57

In the primary dentition, if the canine is forward (anterior) in occlusal relations this will result in: What if the canine is posterior?

Answer 57

class II class III

Question 58

pushing of incisors with tongue may result in:

Answer 58

anterior open bite

Question 59

describe a reverse overjet malocclusion:

Answer 59

when the maxillary incisors are behind the mandibular incisors

Question 60

In deciduous dentition, normal occlusal changes are due to ____, NOT from ____.

Answer 60

skeletal growth; dental changes

Question 61

- altering functional environment - altering neuromuscular pattern - introducing habits such as thumb sucking these can alter:

Answer 61

alter skeleton and occlusion resulting in malocclusion

Question 62

Functional disturbances or thumb sucking habits are involved in the:

Answer 62

etiology of malocclsuions

Question 63

in deciduous dentition, unfavorable ___ leads to malocclusion even in young patients

Answer 63

skeletal patterns

Question 64

___ dental eruption may lead to malocclusion

Answer 64

ectopic dental eruption

Question 65

ectopic dental eruption is pretty much reserved to:

Answer 65

permanent dentition

Question 66

When the upper and/or lower jaws (maxilla, mandible) are not aligned properly in relation to the cranial base:

Answer 66

skeletal malocclusions

Question 67

What influences skeletal malocclusion (which is when the upper and or lower jaws are not aligned properly in relation to the skeletal base)?

Answer 67

STRONG genetic influence but some claim that function can create significant skeletal malocclusion also

Question 68

Missing primary teeth is:

Answer 68

very rare