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Gingival enlargement, (also termed gingival overgrowth, hypertrophic gingivitis, gingival hyperplasia, or gingival hypertrophy, and sometimes abbreviated to GO), is an increase in the size of the gingiva (gums). It is a common feature of gingival disease.〔 Gingival enlargement can be caused by a number of factors, including inflammatory conditions and the side effects of certain medications. The treatment is based on the cause.〔 A closely related term is epulis, denoting a localized tumor (i.e. lump) on the gingiva. ==Classification== The terms gingival hyperplasia and gingival hypertrophy have been used to describe this topic in the past. These are not precise descriptions of gingival enlargement because these terms are strictly histologic diagnoses, and such diagnoses require microscopic analysis of a tissue sample. Hyperplasia refers to an increased number of cells, and hypertrophy refers to an increase in the size of individual cells.〔Merriam-Webster's Medical Desk Dictionary, 2002, ISBN 1-4018-1188-4, page 367-368.〕 As these identifications obviously cannot be performed with a clinical examination and evaluation of the tissue,〔Oral Pathology Lecture Series Notes, New Jersey Dental School, 2004-2005, page 24.〕 the term ''gingival enlargement'' is more properly applied. Gingival enlargement has been classified according to etiology into 5 general groups:〔 * Inflammatory enlargement * Drug induced enlargement * Enlargement associated with systemic diseases or conditions * Neoplastic enlargement * False enlargement. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Gingival enlargement」の詳細全文を読む スポンサード リンク
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