Acromegaly is a rare disease that can have serious consequences. This disease is not widely known by stomatologists, although cranio-facial manifestations are important and rapid changes in the oral cavity are frequent and sometimes dramatic. The prosthetic management of patients with acromegaly is not easy because it is necessary to wait for the stabilization of the disease. If this is not the case, the bone changes prevent the stability of prostheses over time. Moreover, because of bone remodeling, some treatments are contra-indicated, which limits our therapeutic choices. Through this clinical case, we will focus on the oral manifestations of patients with acromegaly and the method of prosthetic management.