(1) You don't want to be at the dentist and have the novocaine wear off halfway through a root canal, do you?(2) Twenty-three years as a published writer have taught me that publishing is a hazardous enterprise at best, an arena of life where it would be best to inject your self-esteem with novocaine if such a thing were possible.(3) In 1905, cocaine was replaced by the synthetic drug novocaine This in turn was replaced by lignocaine, which is in use today.(4) Before beginning the procedure, you will inhale an aerosol spray of a medicine like Novocain , which numbs the nose and throat area and helps to prevent coughing and gagging during the procedure.(5) As well as the usual Novocain and gas, she also offers a relaxing aromatherapy service and specially designed Eye Trek glasses which allow you to watch your favourite DVD while she tinkers about with your teeth.