Intraoral prosthesis (Palatal Augmentation Prosthesis, PAP) may be used to augment swallowing function in patients with dysphagia. PAP can be used to recontour the dimensions of hard palate to fit the tongue following removal of oral cancer. Use of PAP can significantly improve the patient's ability to use the tongue to propel the bolus through the pharynx. The aim of this study is to show the effects of PAP through videofluoroscope in patients with dysphagia. The results were as follows: 1. A decrease in pharyngeal transit time was detected wearing with PAP. 2. Pharyngeal cross area was decreased wearing with PAP. 3. The results indicated PAP may effectively help lingual movement in patients with dysphagia.