The effects of gum disease can lower the gumline. This will in turn expose the dentine of the root which contains the tubules leading directly to the nerve. Hot, cold & sometimes sweet foods can cause pain. A special paste is available that can be applied to provide some relief from this condition.
If the gum has receeded and a large area of root is exposed, or excessively worn or decayed, the root can be re-enameled with a white filling material to same colour of the tooth using an adhesive technique which does not involve any drilling or local anaesthetic (injection) and is painless.
This is an instant cure for sensitivity, protects the root and in most cases prevents further gum recession.