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ORIGINAL ARTICLE
Year : 2020  |  Volume : 8  |  Issue : 3  |  Page : 56-61

Diagnosis of vertical root fractures using cone-beam computed tomography


1 Department of Removable Prosthodontics, The Nippon Dental University School of Life Dentistry, Niigata, Japan
2 Department of Oral and Maxillofacial Radiology, The Nippon Dental University School of Life Dentistry, Niigata, Japan
3 Department of Comprehensive Dental Care, The Nippon Dental University Niigata Hospital, Niigata, Japan
4 Dental Anesthesia and General Health Management, The Nippon Dental University Niigata Hospital, Niigata, Japan

Correspondence Address:
Fumi Mizuhashi
Department of Removable Prosthodontics, The Nippon Dental University School of Life Dentistry, Niigata, 1-8 Hamaura-Cho, Chuo-Ku, Niigata
Japan
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jomr.jomr_24_20

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Background/Aim: The aim of this study was to investigate the occurrence of vertical root fracture using cone-beam computed tomography (CBCT). Methods: We reviewed the CBCT images of 41 patients who were examined and verified vertical root fracture. The characteristics of root fractures (pulpal vitality, existence of injury, kind of tooth, and core construction) that were considered to influence the occurrence of root fracture were investigated. The position of the tooth and the fracture direction were also examined. Diagnostic propriety of root fractures between intraoral radiography and CBCT was examined. Statistical analyses of each characteristic and the fracture direction were performed by Chi-squared test. The position of the tooth and diagnostic propriety were analyzed by cross-tabulation. Results: The number of vertical root fracture was larger at nonvital tooth (P < 0.001) and larger on nontraumatized tooth (P < 0.001). There was not statistically significant difference among metal core, composite resin core, and no core to the occurrence of vertical root fracture. The number of vertical root fracture was largest on the premolar teeth (P = 0.022), and the anterior teeth fracture was larger on the upper teeth (P = 0.003). On the premolar teeth, the frequency of buccolingual fracture was larger than that of mesiodistal fracture (P = 0.033). The vertical root fracture that was diagnosable by CBCT was larger in comparison to that by intraoral radiography (P < 0.001). Conclusions: These results suggested that vertical root fracture easy to occur on nonvital tooth, nontraumatized tooth, and premolar tooth, and diagnosable using CBCT.


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