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Guided Endodontics: Three-Dimensional Planning and Template-Aided Preparation of Endodontic Access Cavities

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Method to Identify Accessory Root Canals using a New CBCT Software.

Mike Reis Bueno¹, Bruno Correa Azevedo², Cyntia Rodrigues de Araújo Estrela³

¹CROIF Oral Radiology Center, Cuiabá, MT, Brazil.

Brazilian Dental Journal

|January 12, 2022

Summary

This study presents a new method for identifying accessory root canals in cone-beam computed tomography (CBCT) scans using e-Vol DX software. This technique aids in diagnosing infections by accurately visualizing these small, often missed, root canal structures.

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Published on: February 23, 2024

Area of Science:

Dentistry
Radiology
Endodontics

Background:

Accessory root canals harbor microorganisms in endodontic infections.
Traditional radiographic methods have limitations in detecting these canals.
Cone-beam computed tomography (CBCT) offers higher resolution for visualization.

Purpose of the Study:

To describe a methodology for identifying accessory root canals using e-Vol DX software in CBCT scans.
To improve the diagnostic accuracy of accessory root canals.
To differentiate accessory canals from root fractures.

Main Methods:

Utilizing thin slices (≤0.1mm) from coronal, sagittal, and axial CBCT views.
Employing multiplanar reconstruction (MPR) with parallax correction for precise alignment.
Identifying accessory canals via a consistent 'line-line-dot' sequence across three orthogonal planes.

Main Results:

The proposed methodology successfully identifies accessory root canals in CBCT images.
The 'line-line-dot' sign in MPR is a reliable indicator.
Volumetric reconstruction aids in visualizing these canals with specific filters.

Conclusions:

The described method provides an accessible and effective way to visualize accessory root canals.
This technique enhances diagnostic capabilities in endodontics.
It aids in distinguishing accessory canals from root fracture lines.