W8 - RC Anatomy and Access Cavity - Rodrigo

Question 1

average length of maxillary incisor

Canal #?

Answer 1

23 mm

1 canal

Question 2

average length of maxillary lateral incisors

Canal #?

Special consideration?

Answer 2

22 mm

1 canal

Prebend file as it often has a curved root

Question 3

average length of maxillary canine

Canal #?

Special consideration?

Answer 3

26 mm

1 canal

Distal curvature –> prebend files

Question 4

average length of maxillary first premolars

Canal #?

Answer 4

21.5 mm

2 canals - can have 1 or 3

Question 5

average length of maxillary second premolar

Canal #?

Answer 5

21 mm

1 or 2 canals (50/50)

Question 6

Shape of access cavity for maxillary premolars

Answer 6

Oval - buccal palatally

Question 7

What can be used to open up calcified canals and smoothen walls?

Answer 7

Ultrasonic

Question 8

average length of maxillary first molars

Canal #?

Answer 8

Rodrigo says 21mm

3 or 4 canals (4 most likely)

Question 9

average length of maxillary second molar

Canal #?

Answer 9

20 mm

3 canals (4 is rare)

Question 10

Shape of access cavity for maxillary molars

Answer 10

Triangle

Question 11

average length of mandibular central incisors

Canal #?

Answer 11

21 mm

1 canal 73%
2 canal 27%

Question 12

average length of mandibular lateral incisors

Canal #?

Answer 12

22 mm

1 canal -> can be 2

Question 13

Why do mandibular incisors commonly fail? (RCT)

Answer 13

missed the second the canal that occurs 25% of the time

Question 14

How to create access cavity of mandibular incisors

Answer 14

Place bur perpendicularly to pulp chamber for 2-3 mm on the cingulum

Switch to vertical positioning to access pulp chamber

Go bucco-lingually to ensure you don’t have 2 canals

Question 15

How to create access cavity of maxillary incisors

Answer 15

Place bur perpendicularly to pulp chamber for 2-3 mm on the cingulum

Switch to vertical positioning to access pulp chamber

Question 16

Average length of mandibular canines

Number of canals?

Answer 16

26 mm

1 canal can be 2

Question 17

Access cavity of mandibular canine

Answer 17

oval

Question 18

Important details when you are making your access cavity (2)

Answer 18

Must have straight line access

Remove all pulpal roof

Question 19

Average length of mandibular first premolar?

Number of canals?

Answer 19

22 mm

Mostly 1 canal, can be 2

Question 20

Average length of mandibular 2nd premolar

Number of canals

Answer 20

22 mm

Mostly 1 canal, can be 2

Question 21

Access cavity of mandibular premolar

Answer 21

Oval shaped between buccal and lingual cusp

Question 22

Average length of mandibular first molars

Number of canals

Special consideration

Answer 22

21 mm

3 canals, sometimes 4

May gave a mesial medial canal additionally

Question 23

What is “intermolaris radix”?

Answer 23

occlusional extra root in mandibular molars

• lingual root

Question 24

Average length of mandibular second molars

Number of canals?

Answer 24

21 mm

3 canals (can be 2 or 4)

Question 25

Answer 25

C shaped canal common in mandibular second molars