What is the origin of Bohn's nodules?

Bohn's nodules are small, whitish cyst-like lesions that can be found in the mouths of newborns. They result from the remnants of mucous gland tissue in the newborn’s oral cavity, specifically from the minor salivary glands located in the area of the alveolar mucosa. These nodules typically appear along the midline of the palate and are benign in nature, often disappearing on their own within a few weeks to months.

Understanding the origin of Bohn's nodules as being related to mucous gland tissue helps in differentiating them from other developmental structures in the mouth, such as those arising from the dental lamina or the enamel organ, which are involved in tooth development rather than in the formation of these nodules. This distinction is important for healthcare providers when diagnosing and reassuring parents about the presence of these common oral findings in infants.