Endodontic Access Opening and Canal Location

Vocabulary flashcards related to accessing the pulp chamber and locating root canal orifices in endodontics.

Endodontic Triad

Biomechanical preparation, microbial control, and complete obturation of the canal space.

Create an environment in which the body can heal itself

The ultimate goal of endodontic treatment.

Accessing the Pulp Complex

The coronal portion of the pulp complex must be accessed to permit pulp removal and facilitate the location and debridement of the root canals.

Pre-Access Analysis

Analysis of the anatomy of the tooth being treated and the anatomy of the surrounding tissues.

Law of Centrality

The pulp chamber of every tooth is in the center of the tooth at the level of the cementoenamel junction.

Law of Concentricity

The walls of the pulp chamber are concentric to the external outline of the tooth at the level of the CEJ.

Cusp Tip-Pulp Floor Distance (CPFD)

Distance from the cusp tip to the furcation, measured on a radiograph.

Pre-Access Preparation

Defective restorations and caries should be removed to prevent bacterial contamination.

Law of Color Change

The color of the pulp chamber is always darker than the surrounding walls.

Floor-Wall Junction

The junction where the light walls of the pulp chamber meet the dark floor.

Law of Symmetry 1

Except for the maxillary molars, the orifices of the canals are equidistant from a line drawn in a mesial-distal direction through the center of the pulp chamber floor.

Law of Symmetry 2

Except for the maxillary molars, the orifices of the canals lie on a line perpendicular to a line drawn in a mesial-distal direction through the center of the pulp chamber floor.

Law of Orifice Location 1

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

Law of Orifice Location 2

The orifices of the root canals are located at the vertices of the floor-wall junction.

MB2

Second canal often found in the mesiobuccal roots of maxillary molars.