Endodontics

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Questions and Answers

What is the primary objective of endodontic therapy?

Restoration of the treated tooth to its proper form and function in the masticatory apparatus in a healthy state.

What are the two main components of the root canal system?

Pulp chamber and root canal.

What is the term for the aperture at or near the apex of the root?

Apical foramen.

What is the scope of endodontics in terms of diagnosis?

Differential diagnosis of oral pain of pulpal and/or periradicular origin. Signup and view all the answers

What is the result of secondary dentin deposition on the pulp chamber?

The size of the pulp chamber decreases. Signup and view all the answers

What is the purpose of obturation in endodontics?

To fill the root canal system. Signup and view all the answers

What is the term for the treatment of teeth that have previously undergone endodontic therapy?

Retreatment. Signup and view all the answers

What is the focus of the pre-clinical aspect of endodontic course?

Morphology and access cavity preparation. Signup and view all the answers

What is the mechanism by which tertiary dentin is deposited?

By continuous irritation of the pulp (caries, attrition, abrasion) Signup and view all the answers

What is the term for any branch of the main pulp canal or chamber that communicates with the external surface of the root?

An Accessory canal Signup and view all the answers

What is the definition of an Apical Foramen?

The main apical opening on the surface of the root canal through which blood vessels enter the canal Signup and view all the answers

What is the term for the narrow, ribbon-shaped communication between two root canals that contains pulp or pulpally derived tissue?

The Isthmus Signup and view all the answers

What is the classification system of root canal anatomy developed by Weine?

Six types Signup and view all the answers

What is the definition of Type I root canal anatomy according to Weine's classification?

A single canal extends from the pulp chamber to the apex Signup and view all the answers

What is the term for the narrowest diameter of the root canal short of the apical foramina or radiographic apex?

Apical Constriction (Minor Diameter) Signup and view all the answers

What is the term for the canal that is located in the coronal or middle third of the root and extends horizontally from the main root canal?

Lateral canal Signup and view all the answers

Study Notes

Endodontics

Endodontics is the branch of Dentistry that deals with the etiology, prevention, diagnosis, treatment, and prognosis of diseases of the pulp and periapical tissues.

Objectives of Endodontics

The objective of endodontic therapy is to restore the treated tooth to its proper form and function in the masticatory apparatus in a healthy state.

Scope of Endodontics

Differential diagnosis of oral pain of pulpal and/or periradicular origin
Vital pulp therapy
Nonsurgical treatment of root canal systems of pulpal origin
Obturation of root canal systems
Endodontic Surgery
Retreatment of teeth previously treated endodontically
Treatment procedures related to coronal restorations by means of post and/or cores involving the root canal space.

Endodontic Course Outline

Morphology and Access Cavity
Endodontic Instruments
Cleaning and Shaping
Root Canal Obturation

Pulp Space Morphology

Components of root canal system
Classifications of Root Canal System (Classes and Types)
Pulp space Morphology of Different teeth
Principles of Coronal Access Cavity Preparation
Errors during endodontic cavity preparation
Problem solving in endodontic cavity preparation.

Components of the Root Canal System

Pulp Chamber: The portion of the pulp within the crown
Root Canal: The portion of the pulp within the root
Apical foramen: an aperture at or near the apex of the root

Morphological Features of the Pulp Cavity

Roof of pulp chamber
Wall of pulp chamber
Floor of pulp chamber
Size of the pulp chamber decreases by age and irritation of the pulp.

Pulp Horns

Accessory canal: any branch of the main pulp canal or chamber that communicates with the external surface of the root
Lateral canal: an accessory canal located in the coronal or middle third of the root
Furcation canal

Apical Root Anatomy

Apical Constriction (Minor Diameter): the narrowest diameter short of apical foramina or radiographic apex
Apical Foramen (Major Diameter): the main apical opening on the surface of root canal through which blood vessels enter the canal
Isthmus: a narrow, ribbon-shaped communication between two root canals that contains pulp or pulpally derived tissue.

Classifications of Root Canal System

Weine Classified root canal anatomy into six types
Type I: A single canal extends from the pulp chamber to the apex
Type II: Two separate canals leave the pulp chamber and join short of the apex to form one canal
Type III: One canal leaves the pulp chamber and divides into two then merge to exit as one canal
Type IV: Two separate distinct canals extend from the pulp chamber to the apex
Vertucci Classification
Type I: Two or three canals with no communications
Type II: Two canals with a definite connection between them
Type III: Three canals with a definite connection between them
Type IV: Canals extend into the isthmus area
Type V: A true connection or corridor throughout the section

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Description

Endodontics is the branch of dentistry that deals with the diagnosis, prevention, and treatment of diseases of the pulp and periapical tissues. The objective is to restore the treated tooth to its proper form and function.