PMC3125656_01
Large radiolucent area extending until the lower margin of the mandible on the right (white arrows). Vertical bone resorption toward the proximal root of 46 (black arrow)
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The orthopantomography which was carried out revealed a 1.5 x 1 cm radiolucent lesion with rough margins located at the body of the mandible at the region distal of 46 in close relation with the mandibular canal [Figure 1]. The extraction of 46 was carried out due to the non-retroverting periodontal infection (large gingival recession of the tooth with more than two-thirds of the root exposed) and serious bone absorption as demonstrated in Figure 1, which made the prognosis of the tooth very poor.
Area of a great accumulation of foamy histiocytes
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Microscopically, many foamy histiocytes in dense arrangement and fewer spindle-shaped cells in fascicular and storiform arrangement were observed [Figures 2 and 3].
Spindle cells and many foamy histiocytes
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Microscopically, many foamy histiocytes in dense arrangement and fewer spindle-shaped cells in fascicular and storiform arrangement were observed [Figures 2 and 3].
Spindle cells surrounding fragments of bone trabeculae
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Among these cells, small fragments of bone trabeculae were found [Figure 4].
Orthopantomography 6 months postoperatively. The defect at the area of the surgical site as well as the post-extraction socket of 46 are distinguished. Nothing remarkable concerning the bone healing process is observed
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Clinically, the area of the surgical trauma had healed well and the orthopantomography [Figure 5] showed no signs of pathology at the site of postoperative defect.