Abstract
Objectives
To describe the effects of cemento-osseous dysplasia (COD) on anatomical structures.
Methods
CBCT scans were retrospectively selected from a database of individuals who attended an Oral Medicine service. Cases with a confirmed diagnosis of periapical, focal, or florid COD were included. Two oral and maxillofacial radiologists assessed the scans. Frequencies of the variables were described according to COD case, lesion areas, and teeth.
Results
Sixty COD cases affected 244 areas and 426 teeth. Florid COD was the most common (n = 48). Cortical bone (buccal, lingual, palatine, or mandibular) (n = 42) and the maxillary sinus (n = 13) were the structures most frequently affected by displacement or perforation. Thinning (n = 80), expansion (n = 62), and perforation (n = 60) of the cortical bone were common effects. The median size of the lesions was 12 mm in the mesiodistal direction, 8 mm in the buccal-lingual/palatal direction, and 9 mm in the superior-inferior direction. Root resorption was observed in 18.1% of all teeth, while tooth displacement was uncommon (0.6%). All teeth affected by COD had a discontinuous lamina dura and non-uniformly visible periodontal ligament space.
Conclusions
CBCT images revealed that cortical bone, lamina dura, and periodontal ligament space were the structures most affected by COD and the effects of COD on anatomical structures were more frequent than previously described.
Clinical relevance
CODs are fibro-osseous lesions common in the clinical practice, and relationship with anatomical structures is poorly described. CBCT is an appropriate method for the diagnosis and follow-up of patients with COD.
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Funding
This work was supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico - CNPq (Grant Nos. CNPq #305493/2018-3 and #455644/2018-1). This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001. Kato CNAO and Barra SG are the recipients of CAPES scholarships. Mesquita RA is a research fellow at CNPq.
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Conception and design, analysis and interpretation of data, drafting the article, and critical revision: Cláudia Borges Brasileiro, Tarcília Aparecida Silva, Lucas Guimarães Abreu, and Ricardo Alves Mesquita. Acquisition of data, analysis, and interpretation of data and writing the first draft of the manuscript: Camila de Nazaré Alves de Oliveira Kato, Sâmila Gonçalves Barra, and Tânia Mara Pimenta Amaral. All authors read and approved the final version of the manuscript.
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This study was conducted in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards and was approved by the local Research Ethics Committee (Universidade Federal de Minas Gerais, protocol number: 66457617.8.0000.5149).
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Kato, C.d.N.A.d.O., Barra, S.G., Amaral, T.M.P. et al. Cone-beam computed tomography analysis of cemento-osseous dysplasia-induced changes in adjacent structures in a Brazilian population. Clin Oral Invest 24, 2899–2908 (2020). https://doi.org/10.1007/s00784-019-03154-x
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DOI: https://doi.org/10.1007/s00784-019-03154-x