Hiperplasia Fibrosa Inflamatoria: reporte de un caso

introduction: the inflammatory fibrous hyperplasia (ifh) is a disorder consisting in a connective tissue overgrowth; it is considered a reactive lesion because it appears in response to a chronic and local irritant; this is a very common oral lesion in adolescents and adults, its etiology is associated with dental malocclusion, use of over-extended prosthetic and orthodontic appliances, and with the presence of biofilm (plaque). nevertheless, child population, mainly patients in mixed dentition, are not exempt from presenting this lesion, in a lower proportion, though. objective: the aim of this case report is to present the clinical case of a patient in mixed dentition, who displays an inflammatory fibrous hyperplasia, with the purpose of showing the clinical and histopathological features of this lesion, emphasizing the importance of an early and correct diagnosis. case report: a 8 year-old male patient, was referred to the pediatric dentistry clinic of the division of post-graduate studies and research, of the school of dentistry, unam, for showing decay lesions and dental malposition. clinical examination revealed a localized gingival over-growth associated to the teeth 41. it was decided to take a biopsy of the lesion to establish the final diagnosis. conclusion: because there are numerous lesions with pretty similar clinical features to the ones the patient presented, it is imperative and essential to know the differential diagnosis of this lesion, and to achieve an early diagnosis to accomplish an effective and appropriate treatment.