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Common Reactive Lesions of the Gingiva AUTHORS Yingci Liu DMD*, Resident, Oral and Maxillofacial Pathology, University of Pittsburgh Medical Center Richard J. Vargo, DMD, Chief Resident, Oral and Maxillofacial Pathology, University of Pittsburgh Medical Center Elizabeth A. Bilodeau DMD, MD, MSEd Associate Professor, Oral and Maxillofacial Pathology, School of Dental Medicine, University of Pittsburgh *To whom correspondence should be addressed. Email: [email protected] Address: G-132, 3501 Terrace Street, Pittsburgh, PA 15261 INTRODUCTION Most masses of the gingiva are reactive in nature instead of true neoplasms. 1 The combination of local irritants (e.g., plaque and calculus), certain medications and hormonal fluctuations can induce hyperplastic changes to the tissue. The clinical presentation is typically a solitary, pink to red, exophytic growth on the attached gingiva or interdental papilla. Although the lesions are benign, they can pose cosmetic concerns, and tissue hyperplasia increases the risk of tissue trauma for the patient. Furthermore, in the majority of cases, these lesions do not spontaneously regress without intervention. In this article, we will summarize the most common reactive lesions of the gingiva. 24 MAY/JU NE 2018 | P EN N S YLVA N IA D EN TA L J O UR N A L