Posterior palatal seal is at:
A. at line between soft and hard palate ***
B. mesial to line between soft and hard palate
C. distal to line between soft and hard palate
NBD Part II
Posterior Palatal seal (Post dam): is the post. Border of maxillary complete denture that put pressure on the displaceable tissue near the junction of the hard and soft palate aid in in retention of prosthesis.