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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Marca, Caroline Dummer, Paul M. H. Bryant, Susan Vier-Pelisser, Fabiana Vieira Só, Marcus Vinicius Reis Fontanella, Vania Dutra, Vinicius D'avila de Figueiredo, José Antonio Poli |
| Description | Country affiliation: Brazil Author Affiliation: Marca C ( Department of Endodontics, Graduate Program, School of Dentistry, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil. carolmarca@hotmail.com) |
| 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. |
| File Format | HTM / HTML |
| ISSN | 14326981 |
| Issue Number | 6 |
| Volume Number | 17 |
| e-ISSN | 14363771 |
| Journal | Clinical Oral Investigations |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2013-07-01 |
| Publisher Place | Germany |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Dentistry Discipline General Surgery Anatomic Variation Bicuspid Cone-beam Computed Tomography Methods Dental Pulp Cavity Tooth Root X-ray Microtomography Anatomy, Cross-sectional Humans Image Processing, Computer-assisted Maxilla Odontometry Radiographic Image Enhancement Tooth Apex Tooth Cervix Comparative Study Journal Article |
| Content Type | Text |
| Resource Type | Article |
| Subject | Dentistry |
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