Pulp Morphology

tooth morphology involves what structures

enamel
cementum
dentin
pulp

function of pulp includes:

formative
nutritive
sensory
protective

what is the formative function of pulp?

Mesenchymal cells form dentin

what is the nutritive function of pulp?

Nourishes the avascular dentin

what is the sensory function of pulp?

Free nerve endings: pain sensation

what is the protective function of pulp?

produces secondary or reparative dentin

where does the neurovascular bundle enter/exit the tooth?

apical foramen

pulp chamber consists of

coronal portion
pulp horns
pulp orifice

root canal consist of

apical portion
apical foramen/delta

which part of the root canal communicates to periodontal tissues?

apical foramen/delta

canines w single vs 2 canals

what is the arrow pointing at?

floor of pulp chamber (important landmark for endodontic therapies)

what are the thirds of root canals?

CDJ delineates what structure

apical constriction

t/f: apical constriction and apical foramen may be different from radiographic terminus of tooth

true

what are accessory canals?

minute canals that extend in a horizontal, vertical, or lateral direction from the pulp space to the periodontium

in what % of cases are accessory canals found in the apical 1/3 of root? middle 1/3? cervical 1/3?

apical → 74%
middle → 11%
cervical → 15%

canal configurations

isthmus configurations (may make it harder to clean/treat)

what are some common sources of anatomical variation?

alteration w age
presence of carious lesions
presence of dental materials/procedures
trauma
calcifications

how does pulp chamber change with age?

reduces in size

altered pulp due to reacting w carious lesion

pulp chamber has receded due to restoration