Terminology and Chronology

Question 1

What is the vermilion zone?

Answer 1

lips

Question 2

What is the vermilion border?

Answer 2

sharp junction of the red zone and skin

Question 3

What is the nasolabial groove?

Answer 3

dermarcates lips and cheek

Question 4

What is the philtrum of lip?

Answer 4

middle of upper lip

Question 5

What is the oral verstibule?

Answer 5

slit like space between teeth and lips/cheek

Question 6

What is the labial/buccal frena?

Answer 6

attachments of the lips and cheeks to the alveolus (bony area surrounding the teeth)

Question 7

What is the hard palate composed of?

Answer 7

Incisive papilla, rugae, midline palatine raphe

Question 8

What is the soft palate composed of?

Answer 8

uvula

Question 9

What is contained in the floor of the mouth?

Answer 9

sublingual folds (lingual frenum)

Question 10

When is the first sign of tooth development?

Answer 10

6-7 weeks i.u.

Question 11

Deciduous teeth begin to calcify at

Answer 11

13-20 week i.u.

Question 12

All deciduous teeth have begun to calcify by

Answer 12

18-20 weeks i.u.

Question 13

Deciduous teeth erupt at

Answer 13

6-30 months

Question 14

Define eruption

Answer 14

emergence into the oral cavity

Question 15

Define exfoliation

Answer 15

loss of the deciduous tooth
exfoliation of a tooth occurs shortly before its permanent successor erupts

Question 16

What are deciduous teeth?

Answer 16

labeled a-t
2 central incisors in each arch
2 lateral incisors in each arch
2 canines in each arch
2 first molars in each arch
2 second molars in each arch

Question 17

When do manibular central incisors (deciduous) erupt?

Answer 17

6-8 months

Question 18

When do maxillary central incisors (deciduous) erupt?

Answer 18

10 months

Question 19

When do maxillary lateral incisors (deciduous) erupt?

Answer 19

11 months

Question 20

When do mandibular lateral incisors (deciduous) erupt?

Answer 20

13 months

Question 21

When do maxillary first molars erupt?

Answer 21

16 months (first)

Question 22

When do mandibular first molars erupt?

Answer 22

16 months (later)

Question 23

When do maxillary canines erupt?

Answer 23

19 months

Question 24

When do mandibular canines erupt?

Answer 24

20 months

Question 25

When do mandibular second molars erupt?

Answer 25

27 months

Question 26

When do maxillary second molars erupt?

Answer 26

29 months

Question 27

What is the deciduous eruption pattern?

Answer 27

incisors > first molars > canines > second molars

Question 28

Deciduous dentition lasts until the eruption of the first permanent tooth

Answer 28

6 years

Question 29

What is the permanent dentition?

Answer 29

32 permanent teeth 2 central incisors per arch 2 lateral incisors per arch 2 canines per arch 2 first premolars per arch 2 second premolars per arch 2 first molars per arch 2 second molars per arch 2 third molars per arch

Question 30

What are succedaneous teeth?

Answer 30

permanent teeth that replace deciduous teeth

Question 31

What are non-succedaneous teeth?

Answer 31

permanent teeth that do not replace deciduous teeth

Question 32

Mandibular first molar (permanent) erupt?

Answer 32

6 years (first)

Question 33

Maxillary first molars (permanent) erupt?

Answer 33

6 years (later)

Question 34

What two teeth are non-succedaneous?

Answer 34

maxillary and mandibular first molars

Question 35

Mandibular central incisors (permanent) erupt?

Answer 35

6-7 years

Question 36

Mandibular lateral incisors (permanent) erupt?

Answer 36

7-8 years

Question 37

Maxillary central incisor (permanent) erupt?

Answer 37

7-8 years

Question 38

Maxillary lateral incisor (permanent) erupt?

Answer 38

8-9 years

Question 39

Mandibular canine (permanent) erupt?

Answer 39

9-10 years

Question 40

Maxillary first premolar (permanent) erupt?

Answer 40

10-11 years

Question 41

Mandibular first premolar (permanent) erupt?

Answer 41

10-11 years

Question 42

Maxillary second premolar (permanent) erupt?

Answer 42

10-11 years

Question 43

Mandibular second premolar (permanent) erupt?

Answer 43

10-12 years

Question 44

Maxillary canine (permanent) erupt?

Answer 44

11-12 years

Question 45

Mandibular second molar (permanent) erupt?

Answer 45

11-13 years

Question 46

Maxillary second molar (permanent) erupt?

Answer 46

12-13 years

Question 47

Mandibular and maxillary third molar (permanent) erupt?

Answer 47

17+ years

Question 48

When is root development completed?

Answer 48

2-3 years after eruption of teeth

Question 49

When is calcification of crown of teeth completed?

Answer 49

1/2 time of eruption and add 1 year

Question 50

What is the first part of the tooth to calcify?

Answer 50

crown