Anatomy of pulp/cosmetic dentistry courses

Anatomy of the Pulp Chamber
Floor
INDIAN DENTAL ACADEMY
Leader in continuing Dental Education
www.indiandentalacademy.com

Authors
Paul Krasner, DDS &
Henry J. Rankow, DDS
Journal of Endodontics
Vol. 30, No. 1, January 2004
5 - 16

Source
Library

Indian Dental academy
• www.indiandentalacademy.com
• Leader continuing dental education
• Offer both online and offline dental
courses

Introduction
Locating the no & position of orifices on
pulp-chamber floors can be difficult.
Endodontic therapy is essential a
surgical procedure, a microsurgical
procedure.

Aim
To observe the anatomy of the pulp
chamber floor and to see if specific,
consistent landmarks or configurations exist
and are quantifiable

Materials and methods
500 extracted, permanent, human teeth
 400
 50
 50

Results
Two categories of anatomic patterns
were observed
1. Relationships of the pulp chamber to
the clinical crown.
2. Relationships of the orifices on the
pulp-chamber floor.

Relationships of the pulp
chamber to the clinical crown.
1. The pulp chamber was always in the center
of the tooth at the level of the CEJ
2. The walls of the pulp chamber were always
concentric to the external surface of the
crown at the level of the CEJ
3. The distance from the external surface of
the clinical crown to the wall of the pulp
chamber was the same throught the
circumference of the tooth at the level of the
CEJ

The pulp chamber was always in the center
of the tooth at the level of the CEJ

The walls of the pulp chamber were
always concentric to the external surface
of the crown at the level of the CEJ

The distance from the external surface of
the clinical crown to the wall of the pulp
chamber was the same throught the
circumference of the tooth at the level of
the CEJ

Law of centrality
Law of concentricity
Law of the CEJ

Relationships of the orifices
on the pulp-chamber floor.

The floor of pulp chamber is always a
darker color than the surrounding dentinal
walls

This color difference creates a distinct
junction where the walls and the floor of
the pulp chamber meet.

The orifices of the root canals are always
located at the junction of the walls and
floor.

The orifices of the root canals are located
at the angles in the floor wall junction.

The orifices lay at the terminus of
developmental root fusion lines, if
present.

The developmental root fusion lines are
darker than the floor color.

Reparative dentin or calcifications are
lighter than the pulp-chamber floor and
often obscure it and the orifices.

1. If a line is drawn in a mesial-distal direction
across the center of the floor of the pulp
chamber, the orifices of the canals on either
side of the line are equidistant
2. If a line is drawn in a mesial-distal direction
across the center of the floor of the pulp
chamber, the orifices of the canals on either
side are perpendicular to it.

Law of symmetry 1
Law of symmetry 2

Law of color change

Law of orifice location 1

Discussion

Summary
Knowing the average no of root canals in
a tooth has limited clinical relevance in
treating a specific tooth

Thank you

Anatomy of pulp/cosmetic dentistry courses

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