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:: Volume 31, Issue 4 (10-2019) ::
J Islam Dent Assoc Iran 2019, 31(4): 218-227 Back to browse issues page
Applicability of CBCT as a Substitute for the Gold-Standard Tooth Clearing Technique for Identification of Internal Anatomical Variations of Mandibular Incisors
Mandana Naseri1 , Zohreh Ahangari2 , Nastaran Bagheri3, Leila Eftekhar * 4
1- Associate Professor, Iranian Center for Endodontic Research, Research Institute of Dental Sciences, School of Dentistry, Shahid Beheshti University of Medical Sciences,Tehran, Iran
2- Professor Department of Endodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3- Postgraduate Student Department of Restorative Dentistry, Azad University of Medical Sciences, Tehran, Iran
4- Assistant Professor Department of Pediatric Dentistry, Dental School, Zanjan University of Medical Sciences, Zanjan, Iran , leila.eftekhar.a@gmail.com
Abstract:   (234 Views)
Background and Aim: Knowledge about the root canal system variations is crucial for successful endodontic treatment. This study aimed to examine the applicability of cone-beam computed tomography (CBCT) as a substitute for the gold-standard tooth clearing technique in identification of internal anatomical variations of mandibular incisors.
Materials and Methods: This in-vitro study evaluated 66 extracted mandibular incisors. The CBCT scans with 0.1 mm voxel size were obtained using NewTom VGO scanner. The number and type of canals, presence/absence of accessory canals, anas-tomosis, apical delta, and morphology of the root apex were all determined. After clearing and staining of the samples, the parameters were re-evaluated under a stereomicroscope for further examination and comparison with the CBCT data. The agreement of the two methods was evaluated by intra-class correlation and Kappa co-efficients for quantitative and qualitative data, respectively.
Results: The results of CBCT assessment were comparable with the gold standard. The most common type of root canal anatomy detected in the central and lateral incisors was the Vertucci’s type I followed by type III. Most apical foramina were buc-cally-deviated and centralized in mesiodistal aspect. CBCT assessment was not valid for assessment of the accessory canals in central incisors and for assessment of mesi-odistal deviation, while an acceptable agreement was noted for the other parameters.
Conclusion: CBCT showed a high accuracy for identification of root canal configuration of mandibular incisors and was comparable with the clearing technique in root canal system assessment; therefore, it can serve as an acceptable substitute for this purpose.
Keywords: Tooth Apex, Cone-Beam Computed Tomography, Incisor, Mandible
Full-Text [PDF 620 kb]   (124 Downloads)    
Type of Study: Orginal | Subject: Endodentics
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Naseri M, Ahangari Z, Bagheri N, Eftekhar L. Applicability of CBCT as a Substitute for the Gold-Standard Tooth Clearing Technique for Identification of Internal Anatomical Variations of Mandibular Incisors. J Islam Dent Assoc Iran. 2019; 31 (4) :218-227
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Volume 31, Issue 4 (10-2019) Back to browse issues page
Journal of Islamic Dental Association of Iran

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