Permanent Dentition- FINAL Retrouvey

Question 1

Tooth eruption sequence for the permanent dentition is more ____ (compared to primary)

Answer 1

variable

Question 2

There are ___ difference with permanent tooth eruption sequence

Answer 2

Gender differences

Question 3

Describe the gender differences in calcification of permanent dentition

Answer 3

Girls are ahead of boys in calcification

Question 4

Describe the gender differences in the eruption pattern of permanent dentition:

Answer 4

girls are ahead of boys by an average of 5-6 months in the eruption pattern

Question 5

The 3-4-5, 4-3-5, and 4-5-3 sequence of eruption pertains to what teeth?

Answer 5

lower arch canine, pm1 and pm2

Question 6

What tooth has a difficult “z” pattern of eruption often resulting in impaction of the tooth in the palate?

Answer 6

maxillary canine

Question 7

What phenomenon in seen with the canine in relation to a smaller maxillary arch:

Answer 7

High buccal canine

Question 8

Timing of eruption is consistent between the dentitions, this means:

Answer 8

children who erupt primary teeth early will erupt permanent teeth early (and vice versa)

Question 9

In the timing of eruption, both sides should erupt at:

Answer 9

the same time

Question 10

Different eruption sequence explain most frequently:

Answer 10

crowded teeth (Maxillary cuspids and mandibular 2 bicuspids)

Question 11

Impaction of what both is becoming more prevalent?

Answer 11

mandibular 2nd molars

Question 12

If a primary tooth has a periodical abscess, this may cause:

Answer 12

permanent tooth to erupt quicker- but not always, it can just cause strange positioning

Question 13

If the primary tooth is extracted during active eruption of permanent tooth, a root that is more than 2/3 formed will realist in:

Answer 13

faster eruption of permanent tooth

Question 14

List two examples of local influences that quicken permanent tooth eruption:

Answer 14

1. periapical lesions
2. primary tooth extraction once root is 2/3 developed

Question 15

Pulpotomies if not observed/done correctly can result in:

Answer 15

impacted teeth

Question 16

Local influences that slow permanent tooth eruption include:

Answer 16

primary tooth extraction before active eruption of permanent tooth (permanent root is not 2/3 formed yet)

Question 17

For mixed dentition to permanent dentition, there are dimensional changes in there:

Answer 17

dental arches

Question 18

The dimesnional changes in the dental arches = changes in arch:

Answer 18

width

Question 19

The direction of growth of the maxilla make the teeth move:

Answer 19

away from eachother

Question 20

The more the mandible growth, the more___ you get.

Answer 20

constriction

Question 21

The maxilla achieve increased arch width through:

Answer 21

vertical alveolar process growth

Question 22

in accordance to width changes, the maxilla displays ___ growth.

Answer 22

divergent (wider)

Question 23

Discuss what happens to the occlusal plane as the maxilla grows:

Answer 23

occlusal plane gets wider

Question 24

Intercanine distance distance increases by roughly 4mm during what dentition stage?

Answer 24

mixed dentition (stops at ~10 years old)

Question 25

In what arch do we actually lost some inter canine distance after ~age 10?

Answer 25

maxillary arch

Question 26

What arch is being described?

1. increases during growth spurts
2. increases occur during eruption of incisors
3. large increase occurs during eruption of cuspids

Answer 26

maxillary arch

Question 27

Describe the change in intercanine width that occur in either the maxilla or mandible after eruption of permanent canines:

Answer 27

NO SIGNIFICANT INCREASES

Question 28

Canines are responsible for brining ____ during eruption

Answer 28

bone

Question 29

Describe the dimensional changes in dental arches: (3)

Answer 29

1. changes are quite variable
2. different for males and females
3. different for maxillary and mandibular arches

Question 30

What is easier to change orthodontically, the maxillary or mandibular arch dimension?

Answer 30

maxillary bc we can orthodontically expand it and there is more bone on the upper arch around the teeth

Question 31

Expansion of the ___ arch is difficult/ impossible because there is no ___ to work with.

Answer 31

mandibular; bone

Question 32

The growth and development of the ___ arch is not as favorable

Answer 32

lower arch (less room and less bone)

Question 33

Factors that limit the loss of arch perimeter of the maxillary arch include: (keeping it from getting small)

Answer 33

1. greater labial angulation of incisors
2. greater increases in arch width
3. smaller leeway space

Question 34

In the PRIMARY dentition, the curve of spee is _____ unless ___.

Answer 34

flat; severe malocclusion

Question 35

In the MIXED dentition, what causes the curve of spee to start to develop?

Answer 35

eruption of incisors and differential growth of different jaw areas, and eruption of the 2nd molars

Question 36

Why do we have a curve of spee in the permanent dentition?

Answer 36

because the curve of spee corresponds to the dynamic movement of the mandible (condyle rotation and translation)

Question 37

The permanent dentition curve of spee is influenced heavily by:

Answer 37

second molars (7s) and maybe incisors

Question 38

Over eruption of the incisors would have what effect on the curve of spee?

Answer 38

steep

Question 39

What are some reasons that prophylactic extraction of impacted third molars is acceptable?

Answer 39

1. Due to later age when procedure would be done (17-18)
2. easy procedure

Question 40

The third molars are ___ inclined

Answer 40

medially