Root and Pulp Morphology Flashcards
Type I root canals
One canal to one foramina
Type II root canals
Two separate canals join at one apical foramina
Type III root canals
Two separate canals from chamber continue to two separate apical foramina
Type IV root canals
One canal from chamber but splits to two canals and two apical foramina
There is no root depression in which type of root canal?
Type I
Incisors have how many pulp horns?
- Mesial, Central, and Distal
Peg lateral incisors are more likely to have only ___ pulp horn(s)
One
Canines have how many pulp horns?
One
Anterior teeth are most likely to have:
1 root with 1 canal (Type I)
If there are to canals in anterior teeth, how do they orient?
How often does this occur?
One is facial and one is lingual
40% in mandibular incisors (Type II-III)
20% in mandibular canines (Type IV)
What is the only anterior tooth that may have 2 roots?
Mandibular canine
Maxillary premolars have ___ horns
2 horns (1 per functional cusp - participate in occlusion)
Mandibular first premolars may only have ___ horn(s)
One (due to small lingual cusp)
Mandibular second premolars with three cusps have ___ pulp horn(s)
3
All mandibular premolars most often have ___ root with ___ canal(s)
1 root with 1 canal
Maxillary first premolars most often have __ root with __ canal(s)
2 roots with one canal (57%)
39% with one root and 2 canals
4% with three roots
Maxillary second premolars most often have __ root with __ canal(s)
One root, one canal
40% have 2 canals
Normally molars have ___ pulp horns per functional cusp
1
Maxillary molars most have ___ roots and ___ canals
3 roots and 4 canals (2 in mesiobuccal)
Mandibular molars most often have __ roots but ___ canals
2 roots and 3 canals (2 mesial)
Irreversible pulpitis
Pulp inflamed and cannot heal
Periapical disease
Periapical radiolucency, Granuloma, Cyst
Necrosis
Pulp death
Maxillary central incisors have a ____ chamber outline with __ root depressions
Triangular with no root depressions
Maxillary lateral incisors have a ____ chamber outline with __ root depressions
Egg shaped with rare, shallow depressions on mesial
Mandibular central and lateral incisors have a ____ chamber outline with __ root depressions
Bow-like with mesial and distal root depressions (deeper distal)
Maxillary canines have a ____ chamber outline with __ root depressions
Pear-shaped with mesial and distal root depressions (deeper distal)
Mandibular first premolars have a a ____ chamber outline with __ root depressions
Ovoid with mesial and distal root depressions (deeper distal)
