Nitrous Sedation
You breathe nitrous oxide — otherwise known as “laughing gas” — combined with oxygen through a mask that’s placed over your nose. The gas helps you relax. Your dentist can control the amount of sedation you receive, and the gas tends to wear off quickly. This is the only form of sedation where you may be able to drive yourself home after the procedure.
The information on this page was referenced from the following site: WebMD