Purpose of the posterior palatal seal

By Dr.Swathi Pai on Wednesday 7 January 2009 with 0 comments



The posterior palatal seal is located at the posterior border of the denture. It has been defined as

an area of soft tissue along the junction of the hard and soft palate on which pressure, within physiologic limits of tissues, can be applied by a denture to aid in its retention. * Summarize the functions of the posterior palatal seal. Millsap, Ettinger

  1. To provide retention

  2. To make the sunken distal border less noticeable to the tongue

  3. Aids in compensating for dimensional changes in curing

  4. The proximity of the tissue contact prevents food from getting under the denture base

  5. Firm contact with the tissue of the soft palate reduces the tendency to gag

  6. The thickened area provides added strength across the denture

Category: Prosthodontics Notes

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