PMC6696846_01
Well-circumscribed mixed radio-opaque/radiolucent mass near the mandibular canal in association with the developing crown of the right mandibular third molar.
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Radiographic studies showed normal condyles and a well-circumscribed mixed radio-opaque/radiolucent mass near the mandibular canal in association with the developing crown of the right mandibular third molar (Figure 1).
Mass in association with developing tooth.
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The patient underwent an enucleation and curettage of the hard right posterior mandibular lesion and extraction of the involved tooth (Figure 2).
Cords and islands of ameloblastic epithelium within primitive ectomesenchymal tissue (hematoxylin-eosin, 20x).
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Microscopic examination of the specimen showed small islands and narrow cords of odontogenic epithelium, consisting of stellate cells in the center and palisading columnar cells in the periphery, located within a rich mesenchyme that contained round, stellate, or spindle-shaped cells (Figure 3), similar to those seen in the dental papilla.
Odontogenic epithelium with the formation of dental hard tissue (hematoxylin-eosin, 40x).
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Enamel, dentin matrix, and foci of cementum formation were present adjacent to the epithelial structures (Figure 4).