Myositis ossificans is a rare entity characterized by heterotopic bone deposition in soft tissues, being located mainly in muscle, two variants have been described: progressive myositis ossificans (PMO) and traumatic myositis ossificans (TMO). The objective of this article is to report the first case of TOM diagnosed in Mexico, in an 11-year-old female patient, after enucleation of the dentigerous cyst, developed progressive limitation to the oral opening, pain and trismus, to the physical examination without palpation of mass or deformities within the cavity, with an oral opening of 0 mm; The tomographic and reconstruction study identified a well-defined hyperdense image compatible with calcification at the level of the medial pterygoid muscle. The lesion was resected, confirming the diagnosis by histopathology. Nowadays the patient currently clinical surveillance and physical therapy s...

Myositis ossificans is a rare entity characterized by heterotopic bone deposition in soft tissues, being located mainly in muscle, two variants have been described: progressive myositis ossificans (PMO) and traumatic myositis ossificans (TMO). The objective of this article is to report the first case of TOM diagnosed in Mexico, in an 11-year-old female patient, after enucleation of the dentigerous cyst, developed progressive limitation to the oral opening, pain and trismus, to the physical examination without palpation of mass or deformities within the cavity, with an oral opening of 0 mm; The tomographic and reconstruction study identified a well-defined hyperdense image compatible with calcification at the level of the medial pterygoid muscle. The lesion was resected, confirming the diagnosis by histopathology. Nowadays the patient currently clinical surveillance and physical therapy s...

Los traumatismos dentales son eventos que suceden frecuentemente. Los datos estadísticos revelan cifrasconsiderables en cuanto a la incidencia y prevalencia de estos accidentes. La intrusión dental es de las más comunesdurante la infancia y su tratamiento depende de la severidad del caso. Junto con los traumatismos dentalesse presentan lesiones en tejidos blandos, las cuales deben ser tratadas del modo más conservador posible a fi nde reducir las posibles secuelas. Presentación del caso: En el reporte se describe a una paciente femenina de 2años 8 meses de edad que acude al área de urgencias del Hospital del Niño DIF Hidalgo por presentar “caída delas escaleras”. Acude en primera instancia a otro hospital de donde fue remitida 24 horas después. A la exploraciónclínica bucal se observa intrusión de dientes 51 y 61. Clínica y radiográfi camente apreciamos fractura detabl...