巨大なる骨線維腫性エプーリスの 1 例

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The epulis has been commonly applied to growths found on the gingivae. We have recently experienced a case of large epulis. The patient, a female, aged, 26, attended outpatient clinic on 18. 1. 69 complaining a swelling in the mouth. She first noticed the swelling about 2 years ago ; since then it had gradually became larger. Examination showed a growth of the gingiva of the so-called epulis type arising on the labial surface of the upper anterior teeth. This tumor was excised under 1% Procain. Microscopic examination showed osteofibromatous epulis. Microscopic section (Fig.5-a) shows the alveolar bone located in the tumor of the upper posterior region. Fig.5-b. c shows the formation of preosseous substance (osteoid?) and collagen fiber in the central region. Fig.5-d. reveals a osteoid substance in the lower anterior region. Numerous etiological theories of osteofibromatous epulis adovocate either ossification in the body of the tumor itself or bone formation derived from the adjacent bone. In a review of our specimen the two etiological processes coexisted.
九州歯科学会の論文