A New Membrane Obturator Prothesis Concept for Soft Palate Defects

Inclusion Criteria: * Adult over 18 year-old * Acquired loss of velar or palato-velar substance (maxillectomies of Class I and II a-d, Brown 2010) following the excision of a tumor * Indication of Suersen obturator prosthesis rehabilitation * Possible dental rehabilitation with removable prosthesis (retention and stability prosthetic provided without the use of glue, mouth opening allowing fingerprints, presence of saliva, dexterity allowing the insertion and removal of prostheses, as well as the cleaning of devices) * Having given their consent to participate in the study * Speaking French, knowing how to read it * Available and motivated for regular follow-up during the study period Exclusion Criteria: * Child under 18 * Allergy to acrylic resin * Radiotherapy or chemotherapy in progress * Surgery of the veil programmed during the 3 months necessary for the realization and the wearing of the prostheses. * Loss of congenital or traumatic palato-velar substance * Maxillectomies including orbital floor or total maxillectomy * Pregnant or lactating woman * Participation in another interventional study * Inability to give informed consent