espanolEl fibro-odontoma ameloblastico (FOA) es un tumor odontogenico mixto, asintomatico, que puede confundirse de acuerdo a sus caracteristicas radiograficas e histologicas con otras enfermedades. Por lo general, afecta a una poblacion entre la primera y la segunda decada de la vida, es mas frecuente en la mandibula. La lesion se caracteriza por mostrar un crecimiento lento pero expansivo, el aumento del volumen intraoral puede causar asimetria facial. Radiograficamente se observa imagen radiolucida bien definida, unilocular, con una radiopacidad interna, el tratamiento es quirurgico y varia de acuerdo a su tamanoEl proposito del trabajo es describir un caso de paciente femenina de 12 anos de edad, con diagnostico de FOA que comprometia los dientes 11, 12 y 13, se realizo manejo conservador para preservar los dientes afectados por el tumor, esperar su proceso de formacion radicular completa y erupcion espontanea, con resultados positivos. EnglishThe ameloblastic fibro-odontoma (AFO) is a mixed, asymptomatic odontogenic tumor that can be confused according to its radiographic and histological characteristics with other diseases. It usually affects a population between the first and second decade of life, it is more frequent in the jaw. The lesion is characterized by a slow but expansive growth, the increase of the oral volume can cause facial asymmetry. Radiographically a well defined radiolucent image is observed, with a loculus, with an internal radiopacity, the treatment is surgical and varies according to its size. The purpose of the work is to describe a case of female patient of 12 years of age, with a diagnosis of AFO that compromised teeth 11, 12 and 13, conservative management was performed to preserve the teeth affected by the tumor, wait for their root formation process complete and spontaneous rash, with positive results.