07 Anomalies of Eruption and Exfoliation Flashcards Preview

D2: 622 Pediatric Dentistry > 07 Anomalies of Eruption and Exfoliation > Flashcards

Flashcards in 07 Anomalies of Eruption and Exfoliation Deck (37):
1

______ % of natal teeth are true primary teeth

90%

2

When do neonatal teeth erupt

1st 30 days

3

Which are more common neonatal v. natal teeth

natal

4

Structures commonly mistaken for erupting primary teeth:

_____ nodules
dental ______ cysts
______ pearls

Bohn's
Lamina
Epstein's

5

This is an island of bone attached to tooth

Eruption sequestrum

6

What arch does eruption sequestrum typically happen in

mandibular

7

This is a displacement or malposition of erupting teeth

Ectopic eruption

8

What can cause ectopic eruption

crowding
over-retained primary teeth
supernmerary teeth
missing teeth
infection/caries

9

What tooth is the most likely to have an ectopic eruption

Maxillary 1st molar (6-7 years)

10

What percent of kids have and ectopic eruption

5% (22% with cleft lip/palate)

11

When might ectopic eruption self correct?

Under age 7
tooth locked only in enamel/dentin

12

When is self correction rare

over 7
locked into pulp
mesial angulation > 3mm
if 2nd primary molar is mobile

13

This shows that a tooth came in ectopically and corrected

Resorption of the adjacent primary tooth

14

What treatment can cause ectopic eruption

SSC fitted improperly

15

This tooth normally erupts and resorbs the root of the primary canine

permanent lateral

16

Lateral Incisor ectopic eruption Tx

1. extract _______ primary canine to allow possibility of midline ________
2. Make a lower lingual _______ arch to prevent _______ of permanent incisors
3. ortho and serial extraction

contralateral
normalization

2. holding, tippingEc

17

ectopic eruption of central incisors

erupt lingually

18

Treat ectopic maxillary central incisor

extract primary central immediately

19

treat ectopic mandibular central incisor

let tooth exfoliate on own

20

Where do ectopic canines erupt

facially over over retained primary canine

21

Where do ectopic premolars erupt

facial to and over-retained molar

22

When does a tooth become over-retained

adjacent to permanent tooth replacement for 6 months or more

23

When do permanent incisors erupt

when 1/2 of more of root is complete

Canines/Premolars at 2/3 root completion

24

Ankylosis

1. May occur at any time during _____
2. Consists of localized _______ of PDL space
3. May be _____ or bony
4. Diagnosis if the tooth remains _______ in the alveolus and the adjacent areas continue to grow
5. Permanent teeth after ______, complication of re-______

1. Eruption
2. Obliteration
3. Fibrous
4. Stationary
5. traume, implantation

25

What percent of primary teeth get ankylosed?

7-14%

26

What is the most common tooth to get ankylosed?

Mn 1st Primary Molar

27

Impacted Maxillary Canines:

___% incidence
Treatment is _____ of primary canines

2
extraction

28

What is the key to treatment and prevention of impacted canines

early diagnosis

29

How do you look for impacted canines on an x-ray

Permanent canine is overlapping the pulp of the permanent lateral incisor

30

What is the problem with an abnormal maxillary frenum

Diastema

31

When should you order a frenectomy

after permanent incisors and canines have eruption and ortho is finished

32

What does ankyloglossia mean

tongue tied

33

What is the influence of premature primary molar loss on eruption of successor?:

1. 5 years or younger
2. 5-8
3. 8 +

1. Delayed eruption (bone reformed)
2. Little effect
3. Accelerated eruption

34

This is dependent on duration, frequency and intensity

Sucking habits

35

Consequences of too much paci/sucking

anterior open bite
palatal constriction
posterior x-bite
severe overjet

36

Treatment for sucking habit

child must want to quit
don't punish
use appliances

37

Treatment for sucking

1. 0-4 years
2. 5-8
3. 8+

1. Pull out paci after kid is asleep
2. positive reinforcement/appliance
3. appliance/ortho