Maxillary substance loss offers a variety of anatomical and functional deficits that significantly influence the performance of maneuvering functions. Restoring substance loss after maxillectomy is a real challenge. Thus, despite the evolution of surgical techniques and the rise of microsurgery, the conventional obturator prosthesis still occupies a considerable place in the management of these patients. In this article, the authors propose to describe this prosthesis and to illustrate it with a clinical case.