WKI Sales Training Feb 2014

Chapter 7 • Head

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TABLE 7.13A. DECIDUOUS TEETH

Deciduous Teeth Central Incisor Lateral Incisor Canine 1st Molar 2nd Molar

Eruption (months) a

6–8

8–10

16–20 12–16

20–24

Shedding (years)

6–7

7–8

10–12 9–11

10–12

a In some normal infants, the first teeth (medial incisors) may not erupt until 12–13 months of age.

M1

M2

Interradicular septa of tooth socket

Socket for M1

C

Interalveolar septum

Central and lateral incisors

C

M1

M2

Molar M = Pm = Premolar

M1

Permanent teeth Deciduous teeth

M2

(A)

(B)

Primary dentition, < 2 years

M3 M2

M3 M2

M2

M1

M1

M1

Pm2 Pm1

M2

M2

M1

M1

Canine

Canine

Canine

Incisors

Incisor 1 Incisor 2

Central incisors Lateral incisors

Canine

Canine

Canine

M1

Pm2 Pm1

M1

M2

M2

M1

M1

M1

M2

M3 M2

M2

(E)

(C)

(D)

M3

Age: 6–7 years

Age: 12 years

Age: 8 years

FIGURE 7.81. Primary dentition (deciduous teeth) and eruption of permanent teeth.

TABLE 7.13B. PERMANENT TEETH

1st Premolar

2nd Premolar 1st Molar 2nd Molar 3rd Molar

Permanent Teeth Central Incisor Lateral Incisor Canine

Eruption (years)

7–8

8–9

10–12 10–11

11–12

6–7

12

13–25

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11/15/2012 8:27:56 PM