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Riga-Fede disease is a rare disease characterised by traumatic ulceration that gives rise to a consistent, greyish, granulomatous plaque with well-defined borders, located on the ventral surface of the tongue or the internal mucosa of the lower lip.
According to the classification proposed by Domingues-Cruz et al [9] Riga-Fede disease can be separated into the precocious type, caused by natal or neonatal teeth, and late disease, with onset after 6-8 months of age when the lower incisors erupt.
In case of mild to moderate irritation to the tongue, conservative treatment such as smoothing the incisal edge with an abrasive instrument is advocated to alleviate feeding difficulties or complications like Riga-Fede disease.