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Master Thesis

L’odontome dilaté comme manifestation rare de la dens invaginatus, à propos d’un cas

Abstract : Introduction: the dens invaginatus results from a developmental anomaly during dental morphogenesis with the consequent invagination of the enamel within the dental papilla occurring before the mineralization phase. Its incidence varies from 0.04 to 10% according to the literature (1). Its most severe form, the dilated odontoma has only rarely been reported. Case report: an 8-year-old patient was referred for a delayed eruption of tooth 42 in relation to a fortuitous radiological discovery mandibular odontoma. The clinical examination revealed a vestibuloposition of the tooth 41 and the absence of eruption of the 42. The panoramic X-ray showed a radio-opaque mass about 1.5 cm long axis in relation to the tooth 42. A digitilized volumetric tomography has been performed in order to identify the structures composing the odontoma. After analysis of the literature, it was a dens invaginatus type IIIb, the most severe form according to the Oehers classification, also called dilated odontoma by some authors. Surgical excision of the lesion was performed under general anesthesia. Discussion-Conclusion: an overview from the literature identified 17 cases of dilated odontoma, 12 of which also required surgical excision. The analysis of these articles highlights the rare nature of the dental invagination found in our patient.
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Submitted on : Friday, December 13, 2019 - 10:12:20 AM
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Antoine Crelier. L’odontome dilaté comme manifestation rare de la dens invaginatus, à propos d’un cas. Sciences du Vivant [q-bio]. 2019. ⟨dumas-02408676⟩

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