Inhalation sedation, laughing gas, relative analgesia, RA, happy gas, gas, … this one has more synonyms than any other sedation technique and is has been there for more than 200 years. It represents the most nearly ideal clinical dental sedative technique and safest too.
Laughing gas is simply a gas which you can breathe in. It’s colourless, sweet-smelling, and non-irritating. It is used in combination with oxygen and maximum amount that can be used is 70%, however majority of dental procedures can be done using 30%.