Maxillary substance loss can be defined as an interruption in the continuity of the osseous and/or fibrous tissues of the maxillary arch. It can be caused by various factors such as trauma, infectious factors or resection of tumour processes. This loss of tissue often results in bucco-sinusal or bucco-naso-sinusal communication, which can have a number of disabling consequences. Functional problems are often observed as the communication created between these natural cavities results in leakage of air, food and fluids, making eating difficult or impossible and communication unintelligible. Reconstructive surgery is the treatment of choice to restore the integrity or continuity of affected structures after resection. However, surgeons may be limited by many parameters (tissue availability, risk of recurrence, physical condition of the patient, etc.) that may contraindicate this option. In this situation, the loss of substance can be restored with a maxillofacial prosthesis, which requires a case study and careful design to ensure its integration (1). The purpose of our work is to review the maxillofacial prosthesis with hollow obturator: This device will increase prosthetic stability, thus improving integration, but its construction presents a number of particularities that we have tried to clarify in this article.
