Eruption Times

Question 1

What is the Contact Point?

Answer 1

Where each tooth touches an adjacent tooth

Question 2

What occurs at the Contact Point?

Answer 2

Caries

Question 2

Where on the tooth is the contact point?

Answer 2

Middle 3rd (Except for Incisors)

Question 3

What are Gingival Embrasures susceptible to?

Answer 3

Plaque and Calculus retention

Question 3

What are Embrasures?

Answer 3

V-shaped gaps between the teeth, above and below the contact point

Question 4

What are Line Angles?

Answer 4

The junction between two surfaces

Question 5

What are Point Angles?

Answer 5

The junction point between three surfaces

Question 6

Which way are Permanent roots inclined?

Answer 6

Distally

Question 7

Which way are Primary roots inclined?

Answer 7

Labially

Question 8

How many roots do Permanent and Primary Maxillary Molars have?

Answer 8

3

Question 9

How many roots do Permanent and Primary Maxillary Mandibular have?

Answer 9

2

Question 10

What is special about Maxillary First Premolars?

Answer 10

It can often have bifurcated or laminated roots

Question 11

What is the general rule of thumb of Eruption for Primary teeth?

Answer 11

• Lowers before Uppers
• Front to back, except for Canines

Question 12

What is the general rule of thumb of Eruption for Permanent teeth?

Answer 12

• Lowers before Uppers
• Front to back, except for Canines

Question 13

What is the Eruption time for Primary Maxillary Central Incisors?

Answer 13

7.5-12 months

Question 14

What is the Eruption time for Primary Maxillary Lateral Incisors?

Answer 14

9-11 months

Question 15

What is the Eruption time for Primary Maxillary Canines?

Answer 15

18-20 months

Question 16

What is the Eruption time for Primary Maxillary First Molars?

Answer 16

14-16 months

Question 17

What is the Eruption time for Primary Maxillary Second Molars?

Answer 17

24-26 months

Question 18

What is the Eruption time for Primary Mandibular Central Incisors?

Answer 18

6-10 months

Question 19

What is the Eruption time for Primary Mandibular Lateral Incisors?

Answer 19

7-12 months

Question 20

What is the Eruption time for Primary Mandibular First Molars?

Answer 20

12-14 months

Question 21

What is the Eruption time for Primary Mandibular Canines?

Answer 21

16-18 months

Question 22

What is the Eruption time for Primary Mandibular Second Molars?

Answer 22

20-22 months

Question 23

What is the Eruption time for **Permanent Maxillary Central Incisors**?

Answer 23

**7-8** years

Question 24

What is the Eruption time for **Permanent Maxillary Lateral Incisors**?

Answer 24

**7-8** years

Question 25

What is the Eruption time for **Permanent Maxillary Canines**?

Answer 25

**10-11** years

Question 26

What is the Eruption time for **Permanent Maxillary First Premolars**?

Answer 26

**10-11** years

Question 27

What is the Eruption time for **Permanent Maxillary Second Premolars**?

Answer 27

**11-12** years

Question 28

What is the Eruption time for **Permanent Maxillary First Molars**?

Answer 28

**6-7** years

Question 29

What is the Eruption time for **Permanent Maxillary Second Molars**?

Answer 29

**12-13** years

Question 30

What is the Eruption time for **Permanent Maxillary Third Molars**?

Answer 30

**17-21** years

Question 31

What is the Eruption time for **Permanent Mandibular Central Incisors**?

Answer 31

**6-7** years

Question 32

What is the Eruption time for **Permanent Mandibular Lateral Incisors**?

Answer 32

**7-8** years

Question 33

What is the Eruption time for **Permanent Mandibular Canines**?

Answer 33

**9-10** years

Question 34

What is the Eruption time for **Permanent Mandibular First Premolars**?

Answer 34

**10-11** years

Question 35

What is the Eruption time for **Permanent Mandibular Second Premolars**?

Answer 35

**11-12** years

Question 36

What is the Eruption time for **Permanent Mandibular First Molars**?

Answer 36

**6-7** years

Question 37

What is the Eruption time for **Permanent Mandibular Second Molars**?

Answer 37

*12-13** years

Question 38

What is the Eruption time for **Permanent Mandibular Third Molars**?

Answer 38

**17-21** years