postpalatal seal

pos·te·ri·or pal·a·tal seal

the seal at the posterior border of a denture.
See also: posterior palatal seal area.

Synonym(s): palatal seal, post dam, postdam, postpalatal seal

post·pal·a·tal seal

(pōst-pală-tăl sēl)

Slightly raised area on the posterior border of a maxillary removable dental prosthesis that slightly displaces soft tissue so as to facilitate retention of the prosthesis.