case_images: PMC6880268_01
case_images: The radiographical diagnosis of complex odontoma.. 
  A) and
  B) panoramic and periapical radiography showing radiopaque lesion in the upper right incisors region;
  C) tomographic image of the sagittal section showing the relation of the lesion with the apex of the upper right central and lateral incisors;
  D) axial reconstruction of odontoma.
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case_images: Panoramic radiographic examination revealed a radiopaque bone-like structure but with a greater density than bone, circumscribed by a thin radiolucent margin in the apical region of teeth 11 and 12 presenting features of complex odontoma ( Figure 1).
case_images: Surgical approach for total excision of the complex odontoma.. 
  A) Osteotomy;
  B) total excision of the odontoma;
  C) repositioning of flap and intra-sulcular suture;
  D) enucleated complex odontoma.
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case_images: A bone regularization procedure was carried out, followed by cleaning of the surgical cavity by irrigation with saline solution ( Figure 2).
case_images: Clinical approach to retro-obturation with five mineral oxides (5MO).. 
  A) Image of the surgical access after washing and polishing the rigid structures with curette;
  B) creation of a niche in the apical third for des-obturation;
  C) placement of 5MO cement in the retro-obturation.
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case_images: Tooth 12 demonstrated external apical resorption; thus, an apicectomy was performed, which was then retro-filled with 5MO (SHAM Dentico, Oman) ( Figure 3).
case_images: Histopathological analysis of the odontoma.. 
  A) Connective tissue around the tumor showing bundles of collagen representing mineralized areas (green arrows) and an island of odontogenic epithelium (blue arrow);
  B) pulpal tissue-like area, demonstrating delicate collagen fibers, a columnar layer of odontoblasts (blue arrows) related to the pre-dentin (yellow arrow) and the dentin matrix showing dentinal tubules (green arrow);
  C) enamel matrix;
  D) mineralized tissue similar to cement, presenting basophilic reverse lines (green arrows).
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case_images: Histopathological examination confirmed the diagnosis of complex odontoma ( Figure 4).
case_images: Radiographic preservation.. 
  A) Periapical radiography of the endodontic treatment before surgery;
  B) radiographic examination after excision of the odontoma and performing the apical retro-obturation of tooth 12;
  C) 30 days after surgery;
  D) and
  E) 12 months after removal of the odontoma.
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case_images: f5
case_images: The periapical radiograph was taken using a radiographic positioner ( Figure 5).