Evaluation of the conventional method for establishing the posterior palatal seal

ObjectiveProviding sufficient posterior palatal seal (PPS) of a maxillary denture is necessary for retention. This research was designed to estimate the arbitrary scraping method used for establishing the PPS.Methods and materialEight complete edentulous patients were selected. They received conventional complete dentures by using a scraping method for establishing the PPS. The posterior retention of the maxillary dentures was measured, the postpalatal area for each patient was visually estimated, and smears were made from the postpalatal areas at insertion appointment, 7, 30, and 90 days after denture placement.ResultThe study revealed that the posterior retention of the maxillary dentures did not change during the stages of the study, and the epithelium of the postpalatal area converted gradually to a keratinized one.ConclusionIt is concluded that the scraping method used for establishing the PPS is an effective and safe technique.