Stress relaxation in denture base resins generally produces: (A) Sagging, (B) Crazing, (C) Creeping, (D) Fracture lines
Answer is B. Stress relaxation can produce small surface flaws that may adversely affect the esthetic and physical properties of a denture. The production of such flaws, or microcracks, is termed as crazing.
Phillip’s 12th edition page 490