Sep 2, 2019
Decay spreads rapidly because the inner layers are much softer than enamel. With continued tooth decay, pain becomes more frequent and severe. When decay and bacteria reach the pulp portion, infection starts.
Tooth decay is cavity. It is a hole that grows bigger over time. Untreated cavities can cause toothache, infection and even tooth loss.Cavity is softening of tooth caused by acids. Teeth are covered with an outer layer called enamel and there is an inner layer called dentin.