Primary Dentition- Dr. Retrouvey (FINAL)

Question 1

Field of orthodontics treatment that occurs while the patient has mixed dentition (primary + permanent dentition):

Answer 1

Interceptive orthodontics

Question 2

How many deciduous teeth 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

Distal

Question 5

_____ replaces primary teeth

Answer 5

Succedaneous

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 a:

Answer 8

very complicated process

Question 9

According to professor- what are the last primary maxillary & mandibular teeth to erupt?

THIS IS DIFFERENT FROM CHART

Answer 9

Canines

Question 10

List the characteristics of deciduous dentition:

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

Answer 10

A. symmetrical
B. interdental
C. angulation
D. occlusal relations
E. arch

Question 11

What do we mean by symmetrical crowns in primary dentition?

Answer 11

Mesial and distal portions of the teeth are equal

Question 12

Interdental spacing=

Answer 12

Diastemas

Question 13

Describing the primary dentition like a picket fence, would be describing the ______ of angulation

Answer 13

Angulation (90 degrees to the occlusal plane)

Question 14

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

Answer 14

Malocclusions have not yet been expressed

Question 15

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

Answer 15

0-2 years

Question 16

Interdental spacing in primary teeth is:

Answer 16

Desirable/good

Question 17

What is a typical desirable measurement of interdental spacings in primary teeth?

Answer 17

4mm

Question 18

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

Answer 18

Incisor liability

Question 19

Larger spaces found mesial to the upper cuspids & distal to the lower cuspids are called:

Answer 19

Primate spaces

Question 20

Primary spaces are found mesial to the _____ & 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 (to about 75%)

Question 22

Crowding in primary dentition is considered:

Answer 22

Rare

Question 23

Crowding in the primary dentition results in:

Answer 23

100% chance for crowding in permanent dentition & poses risk to impaction

Question 24

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

Answer 24

1. Lack of bone formation
2. Force of the lips are too strong resulting in lack of dental alveolar development

Question 25

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

Answer 25

diastemas

Question 26

the upper incisors erupt to the _____ of primary teeth

Answer 26

Labial/facial

Question 27

Lower incisors tend to erupt to the ____ of primary teeth

Answer 27

Lingual

Question 28

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

Answer 28

No significant increase in arch size

Question 29

Because the upper incisors erupt to the labial/facial of primary teeth, the arch size:

Answer 29

expands

Question 30

Because the lower incisors erupt to the lingual of the primary teeth, the arch size:

Answer 30

decreases

Question 31

The roots of primary teeth are _______

Answer 31

symmetrical

Question 32

Since the roots of primary teeth are symmetrical this means that they are:

Answer 32

90 degrees to the occlusal plane

Question 33

ONLY _____ primary teeth are smaller compared to permanent teeth

Answer 33

anterior (incisors & canines)

Question 34

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

Answer 34

Incisor liability

Question 35

Some primary _____ teeth are larger than their successor

Answer 35

Larger

Question 36

The upper second premolar replaces the:

Answer 36

Upper second primary molar

Question 37

The upper second premolar replaces the upper second primary molar. What size of teeth are involved?

Answer 37

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

Question 38

The lower second premolar replaces the:

Answer 38

Lower second primary molar

Question 39

The lower second premolar replaces the lower second primary molar. What size of teeth are involved?

Answer 39

Lower second premolar= 7.0 Lower second primary molar= 9.0mm (2.9 mm difference --- but you have that on both sides so close to 6mm)

Question 40

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

Answer 40

Interceptive orthodontics

Question 41

The secret to orthodontic treatment is to create:

Answer 41

A desirable occlusal plane

Question 42

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

Answer 42

Occlusal plane

Question 43

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

Answer 43

Lateral view

Question 44

Unlike the primary teeth, the permanent teeth are NOT _____ degrees to the occlusal plane

Answer 44

90 degrees

Question 45

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

Answer 45

Curve of spee

Question 46

in the primary dentition the curve of spee is:

Answer 46

Flat

Question 47

If there is a non-flat curve of spee in primary dentition this signifies:

Answer 47

Severe malocclusion

Question 48

Response of the dentoalveolar process to the skeletal dysplasia or to functional disturbance (are not fully expressed)

Answer 48

Dentoalveolar compensations

Question 49

If you have a discrepancy between the maxilla & mandible in deciduous dentition- the level of the occlusal plane will be affected and the ______ will compensate

Answer 49

Dentoalveolar process

Question 50

Describe the dentoalveolar compensations in the primary dentition:

Answer 50

Very minimal because normally the maxilla and mandible are still in minimal amount of growth

Question 51

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

Answer 51

Get worse during growth (with age)

Question 52

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

Answer 52

1. vertical 2. overbite & overjet 3. embrasure space

Question 53

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

Answer 53

embrasure

Question 54

If your upper canine is well tucked into the embrasure between the lower canine & first primary molar this describes:

Answer 54

Class I

Question 55

How do you measure overbite?

Answer 55

The amount of coverage of the lower incisor by the upper incisor

Question 56

Usually the primary dentition overbite=

Answer 56

10-30%

Question 57

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

Answer 57

Overjet

Question 58

A typical overjet measurement in primary dentition is:

Answer 58

1-2mm

Question 59

What provides the most interdigitation in primary dentition?

Answer 59

The canine

Question 60

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

Answer 60

Class II Class III

Question 61

pushing of incisors with tongue may result in:

Answer 61

anterior overbite

Question 62

Describe a reverse overjet malocclusion:

Answer 62

When the maxillary incisors are BEHIND the mandibular incisors

Question 63

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

Answer 63

Skeletal growth; dental changes

Question 64

-Altering functional environment -Altering neuromuscular pattern -Introducing habits such as thumb sucking These can alter:

Answer 64

Alter skeleton & occlusion resulting in malocclusion

Question 65

Functional disturbances or thumb sucking habits are involved in the:

Answer 65

Etiology of malocclusions

Question 66

In deciduous dentition, unfavorable ______ lead to malocclusion, even in young patients

Answer 66

Unfavorable skeletal patterns

Question 67

_______ dental eruption may lead to malocclusion

Answer 67

Ectopic

Question 68

Ectopic dental eruption is pretty much reserved to:

Answer 68

Permanent dentition

Question 69

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

Answer 69

Skeletal malocclusions

Question 70

What influence skeletal malocclusions (which is when the upper &/or lower jaws do not align in relation to the cranial base)

Answer 70

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

Question 71

Missing primary teeth is:

Answer 71

rare