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01-07-2013 | Original Article

Three-rooted premolar analyzed by high-resolution and cone beam CT

Authors: Caroline Marca, Paul M. H. Dummer, Susan Bryant, Fabiana Vieira Vier-Pelisser, Marcus Vinicius Reis Só, Vania Fontanella, Vinicius D’avila Dutra, José Antonio Poli de Figueiredo

Published in: Clinical Oral Investigations | Issue 6/2013

Abstract

Objectives

The aim of this study was to analyze the variations in canal and root cross-sectional area in three-rooted maxillary premolars between high-resolution computed tomography (μCT) and cone beam computed tomography (CBCT).

Materials and methods

Sixteen extracted maxillary premolars with three distinct roots and fully formed apices were scanned using μCT and CBCT. Photoshop CS software was used to measure root and canal cross-sectional areas at the most cervical and the most apical points of each root third in images obtained using the two tomographic computed (CT) techniques, and at 30 root sections equidistant from both root ends using μCT images. Canal and root areas were compared between each method using the Student t test for paired samples and 95 % confidence intervals.

Results

Images using μCT were sharper than those obtained using CBCT. There were statistically significant differences in mean area measurements of roots and canals between the μCT and CBCT techniques (P < 0.05). Root and canal areas had similar variations in cross-sectional μCT images and became proportionally smaller in a cervical to apical direction as the cementodentinal junction was approached, from where the area then increased apically.

Conclusion

Although variation was similar in the roots and canals under study, CBCT produced poorer image details than μCT.

Clinical relevance

Although CBCT is a strong diagnosis tool, it still needs improvement to provide accuracy in details of the root canal system, especially in cases with anatomical variations, such as the three-rooted maxillary premolars.

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Title: Three-rooted premolar analyzed by high-resolution and cone beam CT
Authors: Caroline Marca
Paul M. H. Dummer
Susan Bryant
Fabiana Vieira Vier-Pelisser
Marcus Vinicius Reis Só
Vania Fontanella
Vinicius D’avila Dutra
José Antonio Poli de Figueiredo
Publication date: 01-07-2013
Publisher: Springer-Verlag
Published in: Clinical Oral Investigations / Issue 6/2013
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI: https://doi.org/10.1007/s00784-012-0839-5

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Three-rooted premolar analyzed by high-resolution and cone beam CT

Abstract

Objectives

Materials and methods

Results

Conclusion

Clinical relevance

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Abstract

Objectives

Materials and methods

Results

Conclusion

Clinical relevance

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