Brainscape's Knowledge GenomeTM

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


See full index

Ortho > 6. Development of Dentition and Occlusion > Flashcards

6. Development of Dentition and Occlusion Flashcards

1
Q

What are the three different stages of eruption

A

invagination of dental lamina

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

What is the average age of eruption of first tooth

A

7.5 months

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

Most people have complete primary dentition by ages -

A

2-3 y.o

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

(Males/Females) get their primary teeth faster but (males/females) get their permenant dentition faster

A

males…females

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

Sequence of erupt goes from front to back with exception of _ in the primary teeth

A

canines

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

Which come in first for the primary teeth (lower/uppers) with the exception of

A

lowers… lateral incisors

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

Where are the primate space locations for the maxillary and mandibular arches

A
  • Maxillary= lateral and canine

- Mandibula= canine and first moalr

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

Describe flush terminal plane, distal and mesial step

A
  • Flush= maxillary and mandibular 2nd molars are flush (mandibular however is slightly anterior)
  • Distal step= Manidbular 2nd molar is distal to the maxillary
  • Mesial step= Manidbular 2nd molar is mesial to the maxillary
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

T/F the terminal plane remains constant in the deciduous dentition

A

t

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

T/F Kids with flush terminal plane have max. overbite and oj

A

f- minimal

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

For kids with flush terminal plane. The permenant 1st molars with initially erupt in what orientation relatin to one another

A

cusp to cusp

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

Distal step favors what class of occlusion

A

Angles II

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

Mesial step favors what angle’s class of occlusiom

A

I or class III (if severe)

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

Permenant eruption is accelerated if

A
  • Long standing periapical abcess present

- Late extraction of primary molar

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

Permenant eruption is delayed when

A
  • Congenital absence permenant follice

- Early extraction of primary moalr

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

What is incisor liability

A

the size difference (MD) between the primary and permenant incisors

17
Q

Factors favoring tooth alignment are

A
  • Intercanine arch width growth
  • Intercanine arch length increase (anterior permenant incisor placement)
  • Favorable size ratio variation
18
Q

labially positioning incisors will (increase/decrease) arch length

A

increase

19
Q

Increase in canine arch widths for males and femalse are esentially complete when

A
  • Male= 10

- Female= 8.5-9

20
Q

Maxillary and mandibular incisor liability numbers are

A 
Maxillary= 7.6 mm 
Mandibular= 6 mm
21
Q

What is leeway space

A

size differential between primary and permenant posterior teeth

  • Deciduous and permenant canines
  • Primary 1st moalr and permenant 1st PM
  • Primary 2nd molar and permenant 2nd PM
22
Q

What is the difference between Early mesial drift and late mesial drift

A 
Early= spaced deciduous teeth 
Late= no deciduous spacing
23
Q

Permenant teeth pierce ridge at _ root formation

A

2/3

24
Q

Permenant teeth pierce gingival margin at _ root formation

A

3/4

25
Q

Increase in age –> (increase/decrease) in arch width and (increase/decrease) in arch length

A

increase… decrease

26
Q

How is arch length measured

A
  • Horizontal line drawn from mesial of permenant 1st molars

- Vertical line measured from that line to the labial incisors

27
Q

Arch circumference is (greater/less) at an older age compared to younger age

A

less

28
Q

T/F Skeletal growth increments not accurately predicted but space for tooth alignment is well predicted

A

t

29
Q

Signs of malocclusion

A
  • Lack of spacing in primary teeth
  • Crowding of incisors in mixed dentition
  • Premature loss of deciduous canines (esp unilateral)
30
Q

Premature loss in arch length may be a result of

A
  • ectopic eruption

- Blocked out maxillary canines or mandibular 2nd PMs (due to early eruption of 2nd molars)

Ortho (15 decks)

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