Palatal augmentation prostheses (PAP) are defined by the Glossary of Prosthodontic Terms as palatal prostheses that are mainly used for oral rehabilitation. The tongue plays an important role in speech and swallowing, and tongue movement can be impaired as a result of partial glossectomy for oral cancer, trauma or other factors. These patients often need to lift their head to complete the swallowing action. The use of PAP allows reshaping of the hard palate to improve linguopalatal contact during speech and swallowing. The volume of artificial lowering of the palatal vault depends on the size of the glossal defect and tongue movement limitation. Articulation, mastication and deglutition can be restored in a short time with the effective assistance of a speech pathologist. PAP can also be combined with a removable denture device to enhance the esthetic, pronunciation and mastication.