What can happen if tooth decay is left untreated in humans?
A.Teeth will become whiter
B.Microorganisms may invade the pulp, causing inflammation and infection✓ Correct
C.No conclusive studies have been done on the effect of tooth decay
D.Plaque will dissolve on its own
Explanation
Untreated tooth decay allows bacteria to penetrate deeper layers, eventually reaching the pulp and causing inflammation (pulpitis) and infection, which can spread to surrounding tissues.
💡 Practice unlimited SSC MTS PYQs + AI-tracked progress on each topic. Sign up free →