5 - Introduction to endodontics

Question 1

Describe the roots of a maxillary central incisor.

Answer 1

• 1 root with apical curve
• 1 canal

Question 2

Describe the roots of a maxillary lateral incisor.

Answer 2

• 1 root with distal apical curve
• 1 canal

Question 3

Describe the roots of a maxillary canine.

Answer 3

• 1 root with disto-labial apical curve
• 1 canal

Question 4

Describe the roots of a maxillary 1st premolar.

Answer 4

• 2-3 roots
• 2 canals most likely

Question 5

Describe the roots of a maxillary 2nd premolar.

Answer 5

• 1-3 roots
• 1 canal most likely

Question 6

Describe the roots of a maxillary 1st molar.

Answer 6

• 3 roots
• 4 canals most likely

Question 7

Describe the roots of a maxillary 2nd molar.

Answer 7

• 3 roots
• 3-4 canals

Question 8

Describe the roots of a maxillary 3rd molar.

Answer 8

1-3 roots

Question 9

Describe the roots of a mandibular central incisor.

Answer 9

• 1 root with distal apical curve
• 1-2 canals

Question 10

Describe the roots of a mandibular lateral incisor.

Answer 10

• 1 root with distal apical curve
• 1-2 canals

Question 11

Describe the roots of a mandibular canine.

Answer 11

• 1 root with distal (± labial) apical curve
• 1 canal most likely

Question 12

Describe the roots of a mandibular 1st premolar.

Answer 12

• 1 root
• 1 canal most likely

Question 13

Describe the roots of a mandibular 2nd premolar.

Answer 13

• 1 root
• 1 canal most likely

Question 14

Describe the roots of a mandibular 1st molar.

Answer 14

• 2-3 roots
• 3-4 canals

Question 15

Describe the roots of a mandibular 2nd molar.

Answer 15

• 2 roots
• 3 canals most likely

Question 16

Describe the roots of a mandibular 3rd molar.

Answer 16

1-2 roots

Question 17

What are the features of periapical periodontitis?

Answer 17

• chronic poly-microbial infection
• stimulation of host response
• connective tissue destruction

Question 18

What are the design objectives of chemo-mechanical disinfection?

Answer 18

Herbert Schilder’s principles
- create a continuously tapering funnel shape
- maintain apical foramen in original position
- keep apical opening as small as possible