Impacted and transmigrated mandibular canines : an analysis of 3D radiographic imaging data

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Impacted and transmigrated mandibular canines : an analysis of 3D radiographic imaging data

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Publication Article, peer reviewed scientific
Title Impacted and transmigrated mandibular canines : an analysis of 3D radiographic imaging data
Author Bertl, Michael Hans ; Frey, Clemens ; Bertl, Kristina ; Giannis, Katharina ; Gahleitner, André ; Strbac, Georg
Date 2018
English abstract
OBJECTIVES: Impacted and transmigrated mandibular canines differ greatly in incidence, etiopathology, associated anomalies, and treatment prospects, when compared to their maxillary counterparts. The aim of this study was to provide a detailed analysis of 3D radiographic imaging data of impacted mandibular canines. MATERIALS AND METHODS: In a retrospective cross-sectional study, CT/CBCT data of 88 patients with a total of 94 impacted mandibular canines were analysed. Evaluated parameters included location, morphology, neighbouring structures, associated anomalies, the influence of those factors on mandibular canine transmigration, as well as applied treatment. RESULTS: Transmigration was found to occur in 40.4% of impacted mandibular canines. Transmigrated canines were located significantly more basally and horizontally angulated. Further, transmigration was significantly associated with a lack of contact to adjacent teeth and the canine's apex not contacting the mandibular cortical bone. The overall incidence of root resorptions of adjacent teeth related to impacted mandibular canines was 7.3% and was more likely, if the canine was lingually impacted. While about half of the non-transmigrated impacted canines were orthodontically aligned, half of the transmigrated canines were surgically removed. Monitoring was the second most applied treatment strategy for both groups, and no canines were autotransplantated. CONCLUSIONS: Root resorption of adjacent teeth and transmigration are commonly occurring phenomena related to impacted mandibular canines. CLINICAL RELEVANCE: Treatment often entails the surgical removal of the canine-especially in cases of transmigration. The findings emphasise the importance of early diagnosis and CT/CBCT imaging for further diagnostics and future research of impacted mandibular canines.
DOI https://doi.org/10.1007/s00784-018-2342-0 (link to publisher's fulltext.)
Publisher Springer
Host/Issue Clinical Oral Investigations;
ISSN 1432-6981
Language eng (iso)
Subject Medicine
Research Subject Categories::ODONTOLOGY
Handle http://hdl.handle.net/2043/24761 Permalink to this page
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