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Cone-beam computed tomography in assessment of periodontal ligament space: in vitro study on artificial tooth model

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Abstract

The aim of this in vitro study was to compare cone-beam computed tomography (CBCT) to conventional radiography (RG) in the assessment of the periodontal ligament space. A phantom with a variable “artificial” periodontal ligament space (0, 100, 200, 300, and 400 μm) was used as a model. The examinations were performed simultaneously with RG and NewTom® 9000 digital volume tomograph. Assorted after increasing widths, 15 RGs and 15 CBCT images were presented for judgment to 20 dentists (DD), 20 dental assistants, and 20 dental students. Several weeks later, the same images were randomly mixed and presented to the same 20 DD again. The trial shows that RG gaps wider than 200 μm could be correctly identified by all participants with an accuracy of nearly 100%. A significant difference was observed between the modalities (p < 0.05 and p < 0.001) where conventional RGs performed better than CBCT for assessment of periodontal ligament space. Interobserver variation in relation to each technique was evaluated and no significant difference was found (p > 0.05). In subjective evaluations of image quality with CBCT, the results were basically inferior for images of artificial periodontal ligament space, regardless of the experience of the observers.

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Acknowledgments

We wish to acknowledge the support of The Scientific and Technical Research Council of Turkey (TUBITAK) and Deutsche Forschungsgemeinschaft (DFG) for this research project. We would also like to express our gratitude to Mr. Baha Kurtulus for preparing the figures of the manuscript and to Mrs. Erika Winter-Rodhe and Mr. Norbert Wrobel (Department of Oral Radiology, University of Bonn) for preparing the radiographic and cone-beam computed tomographic images.

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Authors and Affiliations

  1. Department of Periodontology, Faculty of Dentistry, Gazi University, Biskek caddesi 84.sokak, Emek, 06510, Ankara, Turkey

    Nurdan Özmeric

  2. Department of Periodontology, Operative and Preventive Dentistry, Dental School, University of Bonn, Bonn, Germany

    Irina Kostioutchenko, Matthias Frentzen & Pia-Merete Jervøe-Storm

  3. Department of Oral and Maxillofacial Surgery, Dental School, University of Bonn, Bonn, Germany

    Georg Hägler

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  1. Nurdan Özmeric
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  2. Irina Kostioutchenko
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  5. Pia-Merete Jervøe-Storm
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Correspondence to Nurdan Özmeric.

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Özmeric, N., Kostioutchenko, I., Hägler, G. et al. Cone-beam computed tomography in assessment of periodontal ligament space: in vitro study on artificial tooth model. Clin Oral Invest 12, 233–239 (2008). https://doi.org/10.1007/s00784-008-0186-8

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  • DOI: https://doi.org/10.1007/s00784-008-0186-8

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