Paeds Flashcards

1
Q

What is the pattern of eruption for deciduous teeth?

A

A B D C E

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2
Q

When do the primary central incisors erupt?

A

6-12 months

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3
Q

When do the primary central incisors shed?

A

6-7 years

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4
Q

When do the primary lateral incisors erupt?

A

9-16 months

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5
Q

When do the primary lateral incisors shed?

A

7-8 years

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6
Q

When do the primary canines erupt?

A

16-23 months

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7
Q

When do the primary canines shed?

A

9-12 years

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8
Q

When do the primary first molars erupt?

A

13-18 months

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9
Q

When do the primary first molars shed?

A

9-11 years

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10
Q

When do the primary second molars erupt?

A

23-33 months

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11
Q

When do the primary second molars shed?

A

10-12 years

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12
Q

What is the general rule regarding deciduous tooth eruption?

A

Lowers before uppers except for the lateral incisors.

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13
Q

How long after eruption does root formation complete?

A

1.5 years

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14
Q

What is the pattern of eruption for permanent teeth?

A

Upper - 6 1 2 4 5 3 7 8

Lower - 6 1 2 3 4 5 7 8

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15
Q

What is the general rule regarding permanent teeth eruption?

A

Lowers before uppers except for premolars.

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16
Q

What is mixed dentition?

A
  • the time from when the first permanent tooth erupts to the last primary tooth exfoliating
  • usually 6-11 years
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17
Q

What is the eruption date for the upper central incisor?

A

7-8 years

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18
Q

What is the eruption date for the upper lateral incisor?

A

8-9 years

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19
Q

What is the eruption date for the upper canine?

A

11-12 years

20
Q

What is the eruption date for the upper first premolar?

A

10-11 years

21
Q

What is the eruption date for the upper second premolar?

A

10-12 years

22
Q

What is the eruption date for the upper first molar?

23
Q

What is the eruption date for the upper second molar?

A

12-13 years

24
Q

What is the eruption date for the third molars?

A
  • 17-21 years

- some do not erupt

25
What is the eruption date for the lower central incisor?
6-7 years
26
What is the eruption date for the lower lateral incisor?
7-8 years
27
What is the eruption date for the lower canine?
9-10 years
28
What is the eruption date for the lower first premolar?
10-12 years
29
What is the eruption date for the lower second premolar?
11-12 years
30
What is the eruption date for the lower first molar?
6-7 years
31
What is the eruption date for the lower second molar?
11-13 years
32
Describe the differences between deciduous and permanent crowns.
- primary incisor are smaller in both their crown and root proportions - primary molars are wider mesiodistally than permanent premolars - primary molar crowns are more bulbous - primary crowns are whiter
33
Describe the differences between primary and permanent roots.
- primary roots are narrower than permanent roots - primary molar roots are longer and more slender than permanent roots, these primary roots also flare apically to allow room for the developing permanent premolar
34
Describe the differences between primary and permanent pulps.
- primary pulp chambers are larger in proportion to the crown than in permanent teeth - primary pulp horns extend higher into the crown than in permanent teeth, therefore pulpal exposure is more likely
35
Describe the differences between primary and permanent root canals.
- primary root canals are ribbon shaped with many accessory tunnels, which makes them very difficult to clean - permanent root canals tend to be more rounded canals
36
Describe the differences between primary and permanent hard tissue.
- the enamel of primary teeth is relatively thin and has a more consistent depth compared to permanent teeth
37
Describe the differences between primary and permanent occlusion.
- primary incisors are very upright, they come together at the incisal edge - permanent incisors are proclined
38
What is primate space?
Maxillary = space mesial to canine Mandibular = space distal to the canine - allows for mesial drift
39
What is leeway space?
- mesiodistal space occupied by the primary molars, as the teeth that succeed them are narrower - 1.5mm in maxilla either side - 2.5mm n mandible either side - allows for the first permanent molar to drift forward
40
What are the indications for a trauma splint?
- avulsed permanent teeth
41
What are the guidelines for parents and teachers should a child's tooth be avulsed?
- store in cold milk or saliva - don't allow the tooth to dry out - wash for 10s if tooth has debris - do not handle the root, only the crown - reimplant ASAP
42
How is a trauma splint placed?
- cut and bend enough stainless steel wire, measure the length using floss - acid etch the avulsed tooth, and its abutments - apply bond to the teeth - apply composite to the crowns, avoiding the contact areas - sink the wire into the composite - shape and place a little composite over the wire - cure - smooth any rough composite and the ends of the wire
43
What is a defining feature of a primary upper 1st molar?
- prominent mesiobuccal tubercle | - square shape
44
What is a defining feature of a primary upper 2nd molar?
- transverse ridge which runs distobuccal-mesiopalatal
45
What is a defining feature of a primary lower 1st molar?
- prominent mesiobuccal tubercle | - rectangular shape
46
What is a defining feature of a primary lower 2nd molar?
- 3 buccal cusps | - distobuccal cusp is the smallest
47
How are the quadrants labelled in paediatrics?
UR - 5 UL - 6 LL - 7 LR - 8