Local anaesthetic

A local anaesthetic temporarily numbs the nerves in one area of the mouth. You stay awake and feel touch, pressure and vibration, but not pain. It underpins almost every dental treatment.

Before the injection we numb the gum with a gel, then the anaesthetic goes in slowly so you feel as little as possible. It takes effect within minutes and usually lasts one to three hours, depending on the area and the drug.

Tell us beforehand about allergies, heart conditions, blood pressure or a pregnancy, so we choose the right anaesthetic. Afterwards, don't chew until the numbness wears off, so you don't bite your lip or cheek. If you're afraid of needles, see Nervous patients.