Fatigue Resistance — NDEB AFK MCQ
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Correct answer: C — Fatigue resistance (fatigue strength)
Fatigue resistance (fatigue strength/fatigue limit) is the ability of a material to resist fracture under repeated cyclic loading at stress levels below the ultimate tensile strength. It is clinically relevant because dental restorations experience millions of loading cycles during mastication. Materials like ceramics are particularly susceptible to fatigue failure. The fatigue limit is the stress level below which a material can endure an infinite number of cycles without failure.
Reference: Anusavice – Phillips' Science of Dental Materials, 13th ed., 2022