Final - Root and Pulp Morphology

not visualized

for the attachment apparatus on a radiograph, the cementum appears:

dark line

for the attachment apparatus on a radiograph, the PDL appears as a:

white line

for the attachment apparatus on a radiograph, the lamina dura appears as a:

cementum
PDL
lamina dura

what 3 components make up the attachment apparatus?

CEJ

the root canal orifice sits at the level of the:

pulp chamber

what part of the root canal system contains the coronal portion?

pulp chamber

what part of the root canal system contains the pulp horns?

pulp chamber

what part of the root canal system contains the pulp orifice?

root canal

what part of the root canal system contains the apical portion?

root canal

what part of the root canal system contains the apical foramen/delta?

2 or more

teeth with _____ roots will also contain a pulp floor

middle 1/3

if a root is going to bifurcate, in which third of the root canal would you observe the division?

CDJ
apical constriction
apical foramen

at the apical portion of the root canal, what are the 3 landmarks?

apical constriction

histologically the smallest diameter of the root:

apical 1/3

in 74% of root canal cases, accessory canals are found in which root 1/3?

cervical 1/3

in 15% of root canal cases, accessory canals are found in which root 1/3?

middle 1/3

in 11% of root canal cases, accessory canals are found in which root 1/3?

reduce

generally, the pulp chamber will _____ in size with age

1

how many roots does the maxillary central incisor have?

1

how many root canals does the maxillary central incisor have?

maxillary central incisors

which tooth is the LEAST likely to bifurcate?

rounded triangle

at the CEJ cross section, the maxillary central incisor's root has a _______ shape

maxillary central incisors

what is the only tooth that is longer mesio-distally than facio-lingually?

mesio-distal

the maxillary central incisor will present with which pulp horns?

maxillary central incisors

what tooth's root contains a palatal shoulder?

maxillary lateral incisors

what tooth experience the 2nd most anatomical variations?

maxillary lateral incisors

which tooth will experience anatomical variations like dens-in-dents and microdont?

1

how many root canals does the maxillary lateral incisor have?

oval

at the CEJ cross section, the maxillary lateral incisor's root has a _______ shape

maxillary lateral incisors

what tooth's root will delacerate to the distal 53% of the time?

1

how many root canals does the maxillary canine have?

maxillary canines

what is the longest tooth in the mouth?

maxillary canines

what tooth has the widest bucco-lingual canal of all anterior teeth?

oval

at the CEJ cross section, the maxillary canine's root has a _______ shape

maxillary canines

what tooth's root will delacerate to the distal 32% of the time?

2

how many root canals does the maxillary 1st premolar have?

bucco-lingual

in which directions do the roots of the maxillary 1st premolars bifurcate?

kidney/figure 8/hour glass

at the CEJ cross section, the maxillary 1st premolar's root has a _______ shape

middle 1/3

on the maxillary 1st premolar, where does the root bifurcation normally occur?

mesial

on the maxillary 1st premolar, there is a deep root concavity on which side?

90%

what % of maxillary 1st premolars have 2 canals?

13%

of the 90% of maxillary 1st premolars that have 2 canals, what % of them will join together?

6%

what % of maxillary 1st premolars have 3 canals?

4%

what % of maxillary 1st premolars have 1 canals?

bucco-lingual

in what direction to the pulp horns sit in the maxillary 1st premolar?

MB
DB
lingual

if a maxillary 1st premolar has 3 roots, what will be the positions of the 3 roots?

maxillary 1st premolars

what tooth has a high perforation zone due to a vertical mesial coronal & radicular groove?

1

normally, how many roots does the maxillary 2nd premolar have?

flattened oval

at the CEJ cross section, the maxillary 2nd premolar's root has a _______ shape

34%

in what % will the maxillary 2nd premolar have an apical distal curvature?

maxillary 2nd premolars

what tooth is very wide bucco-lingually and extremely thin mesio-distally?

bucco-lingual

in what direction to the pulp horns sit in the maxillary 2nd premolar?

60%

what % of the time will the maxillary 2nd premolar have 1 root canal?

40 %

what % of the time will the maxillary 2nd premolar have 2 root canals?

maxillary 1st molars

what is considered the "most complex" tooth of the mouth?

3

how many roots does the maxillary 1st molar have?

4

generally, the maxillary 1st molar will have ___ root canals

45%

what % of the time will maxillary 1st molars have 3 root canals?

55%

what % of the time will maxillary 1st molars have 4 root canals?

maxillary and mandibular 1st and 2nd molars

which tooth's root orifices are found apical to the CEJ?

mesio-buccal

if a maxillary 1st molar presents with 4 root canals, which root will have the 4th canal?

2

most of the time, the MB root of the maxillary 1st molar will have ___ canals

65-75%

what % of the time will the MB root of the maxillary 1st molar will have 2 canals?

25-35%

what % of the time will the MB root of the maxillary 1st molar will have 1 canal?

MB root

which root canal is the flattest and the widest on the maxillary 1st molar?

palatal root

which root canal is the longest and the biggest on the maxillary 1st molar?

DB root

which root canal is the shortest and the smallest on the maxillary 1st molar?

2

normally, how many root canals will you find on the MB root of the maxillary 1st molar?

1

normally, how many root canals will you find on the DB root of the maxillary 1st molar?

1

normally, how many root canals will you find on the palatal root of the maxillary 1st molar?

maxillary 2nd and 3rd molars
mandibular 2nd and 3rd molars

which maxillary tooth's roots are often found fused together apically?

distal

maxillary 2nd molars have roots that have a ______ inclination

60%

what % of the time will the maxillary 2nd molar will have 3 root canals?

20-40%

what % of the time will the maxillary 2nd molar will have 4 root canals?

3

generally, the maxillary 2nd molar will contain ___ root canals

60%

what % of the time will the mandibular central incisor have 1 root canal?

40%

what % of the time will the mandibular central incisor have 2 root canals?

55%

what % of the time will the mandibular lateral incisor have 1 root canal?

45%

what % of the time will the mandibular lateral incisor have 2 root canals?

mandibular central and lateral incisors

which teeth's pulp chamber contain a lingual shoulder?

20%

what % of the mandibular canines have a distal curvature?

mandibular canines

what tooth has the 2nd longest root in the mouth?

75%

what % of the time will the mandibular canine have 1 root canal?

25%

what % of the time will the mandibular canine have 2 root canals?

1

how many pulp horns does the mandibular canine have?

1

how many pulp horns does the maxillary canine have?

mandibular 1st premolar

which tooth has the ability to have 1, 2 or 3 root canals?

75%

what % of the time will the mandibular 1st premolar will have 1 root canal ?

25%

what % of the time will the mandibular 1st premolar will have 2 root canals ?

5%

what % of the time will the mandibular 1st premolar will have 3 root canals ?

100%

what % of the time will the mandibular 2nd premolar will have 1 root canal ?

2

how many roots does the mandibular 1st molar have?

mesio-distal

in what positions do the roots of the mandibular 1st molar sit?

rectangular

the shape of the pulp chamber at the CEJ of the mandibular 1st molar is:

mesial

which root on the mandibular 1st molar is stronger?

distal

which root on the mandibular 1st molar is smaller?

2

how many root canals does the mesial root canal of the mandibular 1st molar have?

1

the majority of the time, the buccal root of the mandibular 1st molar will have _____ root canals

2

how many roots does the mandibular 2nd molar have?

80%

what % of the time will the mandibular 2nd molar will have 3 root canals ?