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Hokkaido University Collection of Scholarly and Academic Papers >
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Comparison of Fracture Sites and Post Lengths in Longitudinal Root Fractures
| Title: | Comparison of Fracture Sites and Post Lengths in Longitudinal Root Fractures |
| Authors: | Sugaya, Tsutomu Browse this author →KAKEN DB | | Nakatsuka, Megumi Browse this author | | Inoue, Kana Browse this author | | Tanaka, Saori Browse this author | | Miyaji, Hirofumi Browse this author | | Sakagami, Ryuji Browse this author | | Kawamami, Masamitsu Browse this author |
| Keywords: | Fractures originating in the apical region | | fractures originating in the cervical region | | post length | | site of fracture | | vertical root fracture |
| Issue Date: | Feb-2015 |
| Publisher: | Elsevier |
| Journal Title: | Journal of Endodontics |
| Volume: | 41 |
| Issue: | 2 |
| Start Page: | 159 |
| End Page: | 163 |
| Publisher DOI: | 10.1016/j.joen.2014.09.017 |
| PMID: | 25447503 |
| Abstract: | Introduction: Comparing the epidemiology of fractures originating in the cervical and apical regions may help to understand the causes and risk of a vertical root fracture. We aimed to determine the frequency of vertical root fractures in different fracture sites and how the fracture site relates to fracture direction and post length. Methods: Teeth diagnosed with a vertical root fracture were retrospectively surveyed for age and sex of the patient, type of tooth, a fracture region in the longitudinal axial direction, site of the fracture, and presence of a post The fracture region in the longitudinal axial direction was classified as an incomplete fracture, complete fracture, and uncertain. Incomplete fractures were further classified into a fracture originating in the cervical region, a fracture originating in the midregion, and a fracture originating in the apical region. Posts were evaluated by loss of post and length of post. Results: Fractures originating in the cervical and apical region occurred around the same frequency, whereas fractures originating in the midregion were extremely scarce. Of the fractures originating in the cervical region, 36.2% were in a mesial and/or distal site and 57.4% in a buccal and/or lingual site. Of the fractures originating in the apical region, 90.8% were in the buccal and/ or lingual site. The number of cases of fractures Originating in the apical region decreased with increased post length. Conclusions: Sites of fracture and post length differed greatly between fractures originating in the cervical region and the apical region, suggesting that risk factors for fractures originating in the cervical and apical regions are different. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/58448 |
| Appears in Collections: | 歯学院・歯学研究院 (Graduate School of Dental Medicine / Faculty of Dental Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 菅谷 勉
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