Lecture 2- Tooth Development & Terminology

Question 1

ordering of numbering of permanent dentition

Answer 1

1-32
start in maxillary right quadrant –> maxillary left quadrant –> mandibular left quadrant –> mandibular right quadrant

Question 2

teeth 8 & 9 are…

Answer 2

maxillary central incisors

Question 3

teeth 24 & 25 are…

Answer 3

mandibular central incisors

Question 4

teeth 7 & 10 are…

Answer 4

maxillary lateral incisors

Question 5

teeth 23 & 26 are…

Answer 5

mandibular lateral incisors

Question 6

teeth 6 & 11 are…

Answer 6

maxillary canines

Question 7

teeth 22 & 27 are…

Answer 7

mandibular canines

Question 8

teeth 4, 5, 12, & 13 are…

Answer 8

maxillary premolars

Question 9

teeth 20, 21, 28, & 29 are…

Answer 9

mandibular premolars

Question 10

teeth 1, 2, 3, 14, 15, & 16 are…

Answer 10

maxillary molars

Question 11

teeth 17, 18, 19, 30, 31, & 32 are…

Answer 11

mandibular molars

Question 12

ordering of numbering of primary dentition

Answer 12

a-t
start in maxillary right quadrant –> maxillary left quadrant –> mandibular left quadrant –> mandibular right quadrant

Question 13

vermillion border

Answer 13

sharp junction of the red zone and skin

Question 14

nasolabial groove

Answer 14

demarcates lip and cheek

Question 15

philtrum of lip

Answer 15

middle of upper lip

Question 16

labiomental groove

Answer 16

demarcates lip from chin

Question 17

oral vestibule

Answer 17

slit like space b/w teeth and lips/cheeks

Question 18

labial/buccal frena

Answer 18

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

Question 19

hard palate

Answer 19

anterior 2/3 of palate
*supported by bone

contains:
incisive papilla
rugae
midline palatine raphe

Question 20

soft palate

Answer 20

posterior 1/3 of palate

contains:
uvula

Question 21

oropharynx contains

Answer 21

tonsils
anterior & posterior pillars of the fauces

Question 22

sublingual folds

Answer 22

raised folds where submandibular salivary ducts open

Question 23

lingual frenum

Answer 23

attaches tongue to the floor of the mouth

Question 24

when is the first sign of tooth development?

Answer 24

6-7 weeks i.u.

Question 25

when do deciduous teeth begin to calcify?

Answer 25

13-20 weeks i.u.

Question 26

when have ALL deciduous teeth begun to calcify?

Answer 26

18-20 weeks i.u.

Question 27

when do deciduous teeth erupt?

Answer 27

6-30 months

Question 28

eruption

Answer 28

emergence into the oral cavity

Question 29

exfoliation

Answer 29

loss of the deciduous tooth

Question 30

when does exfoliation occur?

Answer 30

shortly before its permanent successor erupts

Question 31

what teeth are not included in the primary dentition?

Answer 31

premolars

Question 32

when do deciduous mandibular central incisors erupt?

Answer 32

6-8 months

Question 33

when do deciduous maxillary central incisors erupt?

Answer 33

10 months

Question 34

when do deciduous maxillary lateral incisors erupt?

Answer 34

11 months

Question 35

when do deciduous mandibular lateral incisors erupt?

Answer 35

13 months

Question 36

when do deciduous maxillary first molars erupt?

Answer 36

16 months (first)

Question 37

when do deciduous mandibular first molars erupt?

Answer 37

16 months (later)

Question 38

when do deciduous maxillary canines erupt?

Answer 38

19 months

Question 39

when do deciduous mandibular canines erupt?

Answer 39

20 months

Question 40

when do deciduous mandibular second molars erupt?

Answer 40

27 months

Question 41

when do deciduous maxillary second molars erupt?

Answer 41

29 months

Question 42

deciduous eruption pattern

Answer 42

incisors --> first molars --> canines --> second molars

Question 43

deciduous dentition

Answer 43

only deciduous teeth present (up to 6 yrs of age)

Question 44

mixed dentition

Answer 44

mixture of deciduous and permanent teeth present

Question 45

permanent dentition

Answer 45

only permanent teeth present

Question 46

succedaneous teeth

Answer 46

permanent teeth that replace deciduous teeth

Question 47

non-succedaneous teeth

Answer 47

permanent teeth that do not replace deciduous teeth

Question 48

which teeth are non-succedaneous?

Answer 48

maxillary and mandibular first molars

Question 49

when do permanent mandibular first molars erupt?

Answer 49

6 years (first)

Question 50

when do permanent maxillary first molars erupt?

Answer 50

6 years (later)

Question 51

when do permanent mandibular central incisors erupt?

Answer 51

6-7 years

Question 52

when do permanent mandibular lateral incisors erupt?

Answer 52

7-8 years

Question 53

when do permanent maxillary central incisors erupt?

Answer 53

7-8 years

Question 54

when do permanent maxillary lateral incisors erupt?

Answer 54

8-9 years

Question 55

when do permanent mandibular canines erupt?

Answer 55

9-10 years

Question 56

when do permanent maxillary first premolars erupt?

Answer 56

10-11 years

Question 57

when do permanent mandibular first premolars erupt?

Answer 57

10-11 years

Question 58

when do permanent maxillary second premolars erupt?

Answer 58

10-11 years

Question 59

when do permanent mandibular second premolars erupt?

Answer 59

10-12 years

Question 60

when do permanent maxillary canines erupt?

Answer 60

11-12 years

Question 61

when do permanent mandibular second molars erupt?

Answer 61

11-13 years

Question 62

when do permanent maxillary second molars erupt?

Answer 62

12-13 years

Question 63

when do permanent mandibular third molars erupt?

Answer 63

17+ years

Question 64

when do permanent maxillary third molars erupt?

Answer 64

17+ years

Question 65

when is root development completed?

Answer 65

2-3 years after eruption of teeth

Question 66

formula to determine approximate crown calcification completion time:

Answer 66

1/2 time of eruption and add 1 year

Question 67

what is the first part of the tooth to calcify?

Answer 67

the crown

Question 68

should i add when you see first evidence of calcification?