Primary Dentition I (Ye's Version)

Question 1

How many primary teeth?

Answer 1

20

Question 2

Primary teeth erupt from ___ to ___ months

Answer 2

8-30

Question 3

Teeth exfoliate between ___ to ___ years

Answer 3

7-12

Question 4

Primary teeth exfoliate just ______ permanent teeth erupt

Answer 4

BEFORE

Question 5

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

Answer 5

1-2 years

Question 6

Primary teeth: Resorption begins at the ____ of the tooth

Answer 6

Apex

Question 7

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

Answer 7

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

Question 8

Primary central replaced by Permanent _________

Answer 8

Central

Question 9

Primary Lateral replaced by Permanent _________

Answer 9

Lateral

Question 10

Primary canine replaced by permanent _______

Answer 10

Canine

Question 11

Primary 1st molar replaced by permanent ________

Answer 11

1st premolar

Question 12

Primary 2nd molar replaced by permanent _______

Answer 12

2nd premolar

Question 13

Succcedaneous teeth: the ______ teeth that replace the primary teeth

Answer 13

20

Question 14

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

Answer 14

Accessional

Question 15

Comparisons of primary and permanent teeth:

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

Answer 15

SMALLER

Question 16

Comparisons of primary and permanent teeth:

Primary crowns are more _______

Answer 16

Bulbous

Question 17

Comparisons of primary and permanent teeth:

Primary more ____________ cervical ridges

Answer 17

Prominent/pronounced

Question 18

Comparisons of primary and permanent teeth:

Primary teeth have very pronounced _________ ______

Answer 18

Cervical constriction/constricted necks

Question 19

Comparisons of primary and permanent teeth:

Which primary teeth have constricted necks???

Answer 19

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

Question 20

Comparisons of primary and permanent teeth:

Primary teeth are _______ in color

Answer 20

Lighter

Question 21

Comparisons of primary and permanent teeth:

Primary teeth have pronounced _________ ______

Answer 21

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

Question 22

Comparisons of primary and permanent teeth:

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

Answer 22

Thinner; consistent

Question 23

Comparisons of primary and permanent teeth:

Primary teeth have ________ (large/small) pulp chambers

Answer 23

Large

Question 24

Comparisons of primary and permanent teeth:

Primary teeth have PROMINENT pulp ______

Answer 24

Horns

Question 25

Comparisons of primary and permanent teeth: In primary teeth, dentin thickness is ________ over pulp horns

Answer 25

thin/limited

Question 26

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.

Answer 26

horizontally or occlusally

Question 27

Comparisons of primary and permanent teeth: Occlusal convergence. Occlusal surfaces are relatively ______ than in the permanent teeth.

Answer 27

Smaller

Question 28

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

Answer 28

Occlusal

Question 29

Comparisons of primary and permanent teeth: Primary roots are proportionately _______ and ________

Answer 29

Longer and skinny

Question 30

Comparisons of primary and permanent teeth: Primary MOLAR root TRUNKS are _______

Answer 30

Short

Question 31

Comparisons of primary and permanent teeth: Primary roots of posterior teeth are very ________

Answer 31

Flared

Question 32

Comparisons of primary and permanent teeth: PERMANENT teeth develop in between the roots of primary _______

Answer 32

Molars

Question 33

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

Answer 33

Greater

Question 34

PRIMARY maxillary central incisor: Facial View Root length is proportionaletly ________ (smaller/greater) than permanent central incisor

Answer 34

Greater

Question 35

PRIMARY maxillary central incisor: Facial View Root/crown ratio for PRIMARY central =

Answer 35

10/6

Question 36

PRIMARY maxillary central incisor: Facial View Root/crown ratio for PERMANENT central =

Answer 36

13/10

Question 37

PRIMARY maxillary central incisor: Facial View Develops from _____ lobes

Answer 37

4

Question 38

PRIMARY maxillary central incisor: Lingual View Anatomy is _______ to permanent central incisor

Answer 38

Similar

Question 39

PRIMARY maxillary central incisor: Lingual View M & D marginal ridges are ______-developed

Answer 39

Well

Question 40

PRIMARY maxillary central incisor: Lingual View Cingulum is very _________ and extends upwards towards the _______ ______.

Answer 40

Pronounced; incisal edge

Question 41

PRIMARY maxillary central incisor: Lingual View The cingulum divides the _______ fossa and ________ fossae.

Answer 41

Lingual and ML and DL fossa

Question 42

PRIMARY maxillary central incisor: Lingual View More rounded _____ angle

Answer 42

Disto-incisal

Question 43

PRIMARY maxillary central incisor: MESIAL AND DISTAL Views Not the extremely well-developed ______ and _____ cervical ridges in the cervical 1/3 of the tooth.

Answer 43

lingual and facial

Question 44

PRIMARY maxillary central incisor: Root 3 descriptions

Answer 44

Cone-shaped, long, slender

Question 45

PRIMARY maxillary central incisor: Crown dimensions MD > BL MD > IG Crown tapers from the ______ to the _____

Answer 45

Facial to Lingual

Question 46

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

Answer 46

Greater; Rounded

Question 47

Primary Maxillary Canine: Facial View Resembles the permanent _______

Answer 47

Canine

Question 48

Primary Maxillary Canine: Facial View Very __________ cervical constriction

Answer 48

Pronounced

Question 49

Primary Maxillary Canine: Facial View Mesial slope of the cusp is _______ than the distal slope of the cusp.

Answer 49

LONGER

Question 50

Primary Maxillary Canine: Facial View Cusp height is _______ than in the permanent teeth

Answer 50

LONGER

Question 51

Primary Maxillary Canine: Facial View M and D contact areas are at ________ (same/different) level(s)

Answer 51

SAME

Question 52

Primary Maxillary Canine: Lingual View Same anatomy as permanent maxillary canine: Contain: - M and D marginal ridges - Lingual ridge, ML and DL fossae - Cingulum

Answer 52

Answer on front

Question 53

Primary Maxillary Canine: ROOT Root is very _______

Answer 53

LONG: ALMOST TWICE AS LONG CROWN

Question 54

PRIMARY mandibular CENTRAL incisor: __________ tooth in the mouth

Answer 54

Smallest

Question 55

PRIMARY mandibular CENTRAL incisor: - Looks like permanent mandibular incisor but is slightly _______

Answer 55

Longer

Question 56

PRIMARY mandibular CENTRAL incisor: Lingual anatomy is more _________

Answer 56

Pronounced

Question 57

PRIMARY mandibular CENTRAL incisor: More prominent ______ ridges

Answer 57

Marginal ridges

Question 58

PRIMARY mandibular CENTRAL incisor: Deeper _______ fossa

Answer 58

Lingual fossa

Question 59

PRIMARY mandibular CENTRAL incisor: DI angle is slightly ______

Answer 59

rounded

Question 60

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

Answer 60

Thicker

Question 61

PRIMARY mandibular CANINE: Cervical ridges (NOT as/AS) _______ pronounced as the primary maxillary canine.

Answer 61

NOT as

Question 62

PRIMARY mandibular CANINE: Not as wide _______ as the maxillary canine

Answer 62

F-L

Question 63

PRIMARY mandibular CANINE: Distal cusp slope is ______ than Mesial cusp slope

Answer 63

LONGER