Sensitive Teeth: Common Causes and What Actually Helps

Tooth sensitivity usually means dentine is exposed or nerves are irritated. The right fix depends on the cause—not every product at the pharmacy is equally useful.

Frequent causes

• Enamel wear from acidic drinks, aggressive brushing, or grinding
• Receding gums exposing root surfaces
• Decay or cracks near the nerve
• Recent whitening or deep cleaning (often temporary)

What your dentist may recommend

Desensitising toothpastes with potassium nitrate or stannous fluoride can help when enamel is thin. Fluoride varnish, bonding on exposed roots, or a night guard for grinding targets specific causes. If pain is sharp and lingering, rule out decay or nerve issues promptly.

Habits that help

Use a soft brush, wait 30 minutes after acids before brushing, and check up regularly with your dentist so small problems do not become painful ones.