Nitrous oxide, commonly referred to as laughing gas, is a colorless, odorless gas that has been used in dentistry for its mild sedative and analgesic properties. When inhaled, it induces a state of relaxation, reduces anxiety, and diminishes pain during dental procedures. It’s called “laughing gas” because some people find that it gives them a euphoric or giddy feeling. Laughing gas was discovered in 1772 by the English scientist Joseph Priestley. Its first use as an anesthetic was by dentist Horace Wells in the 1840s. It gained popularity because it was effective and safer compared to the other anesthetics available at that time. Today, it is widely used in dental…