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Morph. > Primary Dentition I (Ye's Version) > Flashcards

Primary Dentition I (Ye's Version) Flashcards

1
Q

How many primary teeth?

A

20

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2
Q

Primary teeth erupt from ___ to ___ months

A

8-30

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3
Q

Teeth exfoliate between ___ to ___ years

A

7-12

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4
Q

Primary teeth exfoliate just ______ permanent teeth erupt

A

BEFORE

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5
Q

Resorption of primary teeth begins ____ to ____ years after root formation is complete.

A

1-2 years

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6
Q

Primary teeth: Resorption begins at the ____ of the tooth

A

Apex

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7
Q

5 reasons for primary teeth:
1.
2.
3.
4.
5.

A
  1. Mechanical prep of food
  2. Maintain space: early loss causes crowding
  3. Speech
  4. Appearance
  5. Stimulate growth of mandible and maxilla
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8
Q

Primary central replaced by Permanent _________

A

Central

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9
Q

Primary Lateral replaced by Permanent _________

A

Lateral

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10
Q

Primary canine replaced by permanent _______

A

Canine

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11
Q

Primary 1st molar replaced by permanent ________

A

1st premolar

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12
Q

Primary 2nd molar replaced by permanent _______

A

2nd premolar

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13
Q

Succcedaneous teeth: the ______ teeth that replace the primary teeth

A

20

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14
Q

Other 12 permanent teeth (all molars), which erupt DISTAL to the PRIMARY second molars are called _________ teeth.

A

Accessional

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15
Q

Comparisons of primary and permanent teeth:

Primary teeth are _____ in overall crown size and dimensions than permanent teeth (some exceptions)

A

SMALLER

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16
Q

Comparisons of primary and permanent teeth:

Primary crowns are more _______

A

Bulbous

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17
Q

Comparisons of primary and permanent teeth:

Primary more ____________ cervical ridges

A

Prominent/pronounced

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18
Q

Comparisons of primary and permanent teeth:

Primary teeth have very pronounced _________ ______

A

Cervical constriction/constricted necks

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19
Q

Comparisons of primary and permanent teeth:

Which primary teeth have constricted necks???

A
  • B surface of primary molars
  • Labial & lingual surfaces of anterior primary teeth have prominent bulge in cervical third
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20
Q

Comparisons of primary and permanent teeth:

Primary teeth are _______ in color

A

Lighter

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21
Q

Comparisons of primary and permanent teeth:

Primary teeth have pronounced _________ ______

A

Cervical constriction: constricted neck of the tooth due to prominence of cervical bulge/ridges

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22
Q

Comparisons of primary and permanent teeth:

Enamel is ______ and has a _______ thickness of (1mm)

A

Thinner; consistent

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23
Q

Comparisons of primary and permanent teeth:

Primary teeth have ________ (large/small) pulp chambers

A

Large

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24
Q

Comparisons of primary and permanent teeth:

Primary teeth have PROMINENT pulp ______

A

Horns

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25
Q

Comparisons of primary and permanent teeth:

In primary teeth, dentin thickness is ________ over pulp horns

A

thin/limited

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26
Q

Comparisons of primary and permanent teeth:

Enamel rods in a different direction than permanent teeth. The rods at the Cervix slope _________ or ______ instead of gingivally as in permanent teeth.

A

horizontally or occlusally

27
Q

Comparisons of primary and permanent teeth:

Occlusal convergence. Occlusal surfaces are relatively ______ than in the permanent teeth.

A

Smaller

28
Q

Comparisons of primary and permanent teeth:

Occlusal convergence: B and L surfaces converge in PRIMARY teeth markedly toward the ______?

A

Occlusal

29
Q

Comparisons of primary and permanent teeth:

Primary roots are proportionately _______ and ________

A

Longer and skinny

30
Q

Comparisons of primary and permanent teeth:

Primary MOLAR root TRUNKS are _______

A

Short

31
Q

Comparisons of primary and permanent teeth:

Primary roots of posterior teeth are very ________

A

Flared

32
Q

Comparisons of primary and permanent teeth:

PERMANENT teeth develop in between the roots of primary _______

A

Molars

33
Q

PRIMARY maxillary central incisor: Facial View

Crown: MD width is ______ than IG (opposite of permanent centrals). ONLY incisor in either dentition with this feature

A

Greater

34
Q

PRIMARY maxillary central incisor: Facial View

Root length is proportionaletly ________ (smaller/greater) than permanent central incisor

A

Greater

35
Q

PRIMARY maxillary central incisor: Facial View

Root/crown ratio for PRIMARY central =

A

10/6

36
Q

PRIMARY maxillary central incisor: Facial View

Root/crown ratio for PERMANENT central =

A

13/10

37
Q

PRIMARY maxillary central incisor: Facial View

Develops from _____ lobes

A

4

38
Q

PRIMARY maxillary central incisor: Lingual View

Anatomy is _______ to permanent central incisor

A

Similar

39
Q

PRIMARY maxillary central incisor: Lingual View

M & D marginal ridges are ______-developed

A

Well

40
Q

PRIMARY maxillary central incisor: Lingual View

Cingulum is very _________ and extends upwards towards the _______ ______.

A

Pronounced; incisal edge

41
Q

PRIMARY maxillary central incisor: Lingual View

The cingulum divides the _______ fossa and ________ fossae.

A

Lingual and ML and DL fossa

42
Q

PRIMARY maxillary central incisor: Lingual View

More rounded _____ angle

A

Disto-incisal

43
Q

PRIMARY maxillary central incisor: MESIAL AND DISTAL Views

Not the extremely well-developed ______ and _____ cervical ridges in the cervical 1/3 of the tooth.

A

lingual and facial

44
Q

PRIMARY maxillary central incisor: Root

3 descriptions

A

Cone-shaped, long, slender

45
Q

PRIMARY maxillary central incisor: Crown dimensions

MD > BL
MD > IG
Crown tapers from the ______ to the _____

A

Facial to Lingual

46
Q

PRIMARY maxillary LATERAL incisor:

Similar to the primary central incisor except:
1. IG length is _______ than MD width
2. DI angle is more ______ than CI

A

Greater; Rounded

47
Q

Primary Maxillary Canine: Facial View

Resembles the permanent _______

A

Canine

48
Q

Primary Maxillary Canine: Facial View

Very __________ cervical constriction

A

Pronounced

49
Q

Primary Maxillary Canine: Facial View

Mesial slope of the cusp is _______ than the distal slope of the cusp.

A

LONGER

50
Q

Primary Maxillary Canine: Facial View

Cusp height is _______ than in the permanent teeth

A

LONGER

51
Q

Primary Maxillary Canine: Facial View

M and D contact areas are at ________ (same/different) level(s)

A

SAME

52
Q

Primary Maxillary Canine: Lingual View

Same anatomy as permanent maxillary canine: Contain:

  • M and D marginal ridges
  • Lingual ridge, ML and DL fossae
  • Cingulum
A

Answer on front

53
Q

Primary Maxillary Canine: ROOT

Root is very _______

A

LONG: ALMOST TWICE AS LONG CROWN

54
Q

PRIMARY mandibular CENTRAL incisor:

__________ tooth in the mouth

A

Smallest

55
Q

PRIMARY mandibular CENTRAL incisor:

  • Looks like permanent mandibular incisor but is slightly _______
A

Longer

56
Q

PRIMARY mandibular CENTRAL incisor:

Lingual anatomy is more _________

A

Pronounced

57
Q

PRIMARY mandibular CENTRAL incisor:

More prominent ______ ridges

A

Marginal ridges

58
Q

PRIMARY mandibular CENTRAL incisor:

Deeper _______ fossa

A

Lingual fossa

59
Q

PRIMARY mandibular CENTRAL incisor:

DI angle is slightly ______

A

rounded

60
Q

PRIMARY mandibular CANINE:

MANDibular canine has a ______ (thinner/thicker) neck than the primary MAXillary canine.

A

Thicker

61
Q

PRIMARY mandibular CANINE:

Cervical ridges (NOT as/AS) _______ pronounced as the primary maxillary canine.

A

NOT as

62
Q

PRIMARY mandibular CANINE:

Not as wide _______ as the maxillary canine

A

F-L

63
Q

PRIMARY mandibular CANINE:

Distal cusp slope is ______ than Mesial cusp slope

A

LONGER

Morph. (29 decks)

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