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

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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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Conflict of interest

The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Department of Endodontics, Graduate Program, School of Dentistry, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil

    Caroline Marca, Fabiana Vieira Vier-Pelisser & José Antonio Poli de Figueiredo

  2. School of Dentistry, Cardiff University, Cardiff, UK

    Paul M. H. Dummer & Susan Bryant

  3. Department of Endodontics, Graduate Program, School of Dentistry, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil

    Marcus Vinicius Reis Só

  4. Department of Oral Radiology, Graduate Program, School of Dentistry, Brazilian Lutheran University (ULBRA), Canoas, Rio Grande do Sul, Brazil

    Vania Fontanella

  5. CDI—Imaging Diagnosis Centre, Porto Alegre, Brazil

    Vinicius D’avila Dutra

  6. Pontifical Catholic University of Rio Grande do Sul—PUCRS, Av. Ipiranga 6681 Prédio 6 sala 206, 90619-900, Porto Alegre, Rio Grande do Sul, Brazil

    José Antonio Poli de Figueiredo

Authors
  1. Caroline Marca
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  2. Paul M. H. Dummer
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  3. Susan Bryant
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  4. Fabiana Vieira Vier-Pelisser
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  5. Marcus Vinicius Reis Só
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  6. Vania Fontanella
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  7. Vinicius D’avila Dutra
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  8. José Antonio Poli de Figueiredo
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Corresponding author

Correspondence to José Antonio Poli de Figueiredo.

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Marca, C., Dummer, P.M.H., Bryant, S. et al. Three-rooted premolar analyzed by high-resolution and cone beam CT. Clin Oral Invest 17, 1535–1540 (2013). https://doi.org/10.1007/s00784-012-0839-5

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  • DOI: https://doi.org/10.1007/s00784-012-0839-5

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