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International journal of odontostomatology

On-line version ISSN 0718-381X

Abstract

MARTINOVIC, Gonzalo; HENRIQUEZ, María José; ALISTER, Juan Pablo  and  MANTEROLA, Carlos. Regional Odontodysplasia and Premolar Agenesis. Case Report. Int. J. Odontostomat. [online]. 2019, vol.13, n.3, pp.310-315. ISSN 0718-381X.  http://dx.doi.org/10.4067/S0718-381X2019000300310.

Regional odontodysplasia (RO) is a variation in the development; it is not hereditary and it affects both deciduous and permanent dentition. It involves the mesodermal and ectodermal tissues of dental pieces, and coincides with clinical, radiographic and histological findings. Its etiology is still unknown and it reportedly occurs mostly in women. Clinically it can affect the maxilla, mandible or both arches but generally only one is compromised, mainly the maxilla which is affected the most. Radiographically there is limited difference between enamel and dentin tissue, which is less radiopaque than their healthy counterpart, generating an aspect described as "phantom tooth". Histologically hypocalcified areas of the enamel are observed with an irregular order of prisms while the dentine is observed with a reduced number of dentinal tubules and more fibrous consistency in the coronal area. RO treatment is controversial since its incidence is low and the literature on these events is not clear. The aim of this manuscript was to report a case of RO and review related literature. We present a case of RO in a 12-year-old patient who presents absence of parts 2.4.2.5 and 2.6; radicular remains and agenesis of parts 3.5 and 4.5. Its clinical, radiographic and histological aspects are described. A systematic search was carried out in the following databases: Clinical key, Science Direct, PubMed and SciELO.

Keywords : "Odontodysplasia"[Mesh]; "Odontodysplasia/therapy" [Mesh]; "Bicuspid"[Mesh]; "Tooth Abnormalities"[Mesh]; "Amelogenesis Imperfecta"[Mesh]; "Case Reports" [Publication Type].

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