Patient come to office with complete denture acrylic in the upper jaw and partial metallic Class l Kennedy denture in the lower constructed before one year pt. complain was pain from 15 days in the lower anterior teeth and around of them what's the suitable diagnosis:
a. Flexible free area ***
b. Allergy to acrylic
c. Rough surface in the denture base
d. Sharp end of the flange
Natural teeth will show bone resorption.