Root Canal Morphology Flashcards
What is the name of the material used to fill root canals in etc
Gutta percha
What is another name for root pulp tissues
Root pulp, radicular pulp, pulp canal, root canal
Pulp chamber and coronal pulp is for the crown
Pulp horns
If you cut a tooth vertically, and you see the side view of the tooth , what type of section is this
Labiopalatal section
In an upper central incisor, where is the pulp cavity the widest when looking at a mid root section
Cervical level
What is the shape of the radicular pulp in a mid root section of an upper central incisors
Triangle with rounded corners
Narrowest part of the canal of an upper central incisors
Apical constriction
What May occur at the apical foramen of a single root canal
Delta of small canals
What is ramifications of the root canal
Subdivisions, anatomical variations
Function of lateral and accessory canals
They form a channel of communication between the main body of the root canal and the PDL space
What is the angle between main root canal and accessory canal
90 deg
How common are accessory and lateral canals
60% of central incisors
What is root anastomosis
Where two canals exist within the same root
Anastomosis occurs between them, ie lateral communication via accessory canals
Straight line access
How many roots and canals do maxillary 1st premolars have
2 roots , 2 canals common
But could have 2 roots, 3 canals (Buccal root subdivide into 2 canals )
What is the root morphology of the 2nd maxillary premolar?
1 root, 2 pulp horns, Buccal pulp horn higher, 1 canal which tapers towards the apex
How many canals are there in the upper first molar
3 roots 4 canals
What is present in over 60% of upper first molars
A second mesiobuccal canal
What is the curvature shown in lower molars
Compressed mesiodistally and curves distally
Compare the mesial and distal roots of the lower molars
Mesial root is curved, grooved and broader than the distal
How many roots and canals does a mandibular 1st molar have
2 roots, 3 canals
Mesial root - Buccal and lingual canal (kidney bean shaped)
Distal root - single canal
In younger specimens, how many canals does the mandibular 1st molar have
2 (one in the distal root one in the mesial root)
The 2 canals in the mesial are fused to form a single kidney shaped canal
What happens if you find out that the distal canal seems off centre in a lower 1st molar
Second canal present
,widen the cavity buccolingually to form a rectangular outline
How many root canals in mandibular 2nd molar
2 roots 3 canals (2 in mesial 1 in distal)
