Dental question about observed-topic:tooth-sensitivity

Tooth sensitivity usually reflects exposed dentine, but decay, cracks, and pulp inflammation must be excluded.

Dentine tubules can transmit fluid movement toward the pulp; recession, enamel wear, erosion, or a crack can expose them.

Use a soft brush, gentle pressure, fluoride toothpaste, and reduce acidic exposure; worsening localised sensitivity needs attention.

See a dentist for spontaneous or lingering pain, pain on biting, a visible crack, swelling, or sensitivity in one restored tooth.

Ask whether dentine is exposed, whether decay or a cracked filling is present, and whether fluoride treatment or bonding is suitable.