Courtesy of Daniel Stulberg, MD
These lesions, called Bohn nodules, manifest on the buccal or lingual portion of the maxillary alveolar ridge and, less frequently, on the mandibular alveolar ridge. Because Bohn nodules are white and have a firm consistency, they are often confused with teeth. They can be differentiated by location, as teeth usually erupt from the distal aspect of the alveolar ridge.
Bohn nodules are epithelial cysts that are filled with keratin, which gives them their white color. They are caused by portions of epithelium that get trapped under surrounding epithelial cells. Bohn nodules usually resolve when the overlying epithelium ruptures and releases the keratinaceous material (usually by the time the child is 3 months of age).1
These nodules can be confused with neonatal or supernumerary teeth. Neonatal teeth can be abnormally small and pointed; they are true deciduous teeth that have erupted early. If they are removed, the child will not replace them until the time of their adult tooth eruption. Additionally, there are supernumerary teeth, which are extra teeth that are often abnormally shaped and loosely adherent. These abnormal teeth warrant extraction to avoid trauma to the tongue or aspiration.2
In this case, the family was advised regarding the benign nature of the nodules and the expectation that they would spontaneously resolve.
Images and text courtesy of Daniel Stulberg, MD, FAAFP, Professor and Chair, Department of Family and Community Medicine, Western Michigan University Homer Stryker, MD School of Medicine Kalamazoo.