This case report describes a patient with Turner's syndrome receiving systemic androgen therapy who experienced marked gingival enlargement, bleeding, and discomfort. Turner's syndrome and its treatment are discussed. The literature pertaining to sex hormones and their role in affecting periodontal disease is reviewed. The patient was treated with full mouth gingivectomy and 2-week recall visits for a period of 2 months consisting of oral physiotherapy instructions, scaling, and topical fluoride application. She was then placed on 1-month recall for the next 4 months. This mode of therapy was effective in treating severe gingival hyperplasia in a patient receiving systemic androgen therapy.