乳歯列期に生じた上顎正中過剰埋伏歯を伴った口蓋粘膜過形成の１例

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  • A case of hyperplasia of palatal mucosa associated with mesiodens in primary dentition
  • ニュウシレツキ ニ ショウジタ ジョウガク セイチュウ カジョウ マイフクシ オ トモナッタ コウガイ ネンマク カケイセイ ノ 1レイ

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We report a rare case of gingival hyperplasia associated with mesiodens in the primary dentition of a 1 year 11 month old boy. He was brought to our department with a swelling in the premaxillary region. His mother had already noticed this swelling when he was 3 months old. This swelling was a 10×10×5mm sized polypoidal gingival mass. The dental radiograph showed a toothlike calcified structure just beneath this mass. Because of suspicion of benign palatal tumor associated with calcification, total excision of the mass was performed under general anesthesia with oral intubation. The mass and the tooth-like calcified structure were removed at the same time and the specimen was examined histologically. Microscopically, this mass was composed of numerous interlacing collagen fibers and the calcified mass was diagnosed as an inverted and incomplete mesiodens. Then, a definitive diagnosis of gingival hyperplasia associated with mesiodens in the primary dentition was made. Ten months after surgery, no sign of recurrence has been observed.

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