Nitrous oxide, used to calm anxious dental patients, is contributing significantly to greenhouse gas emissions in the UK, with major differences in how it is used and wasted between services, ...

Nitrous oxide used for sedating patients during dental appointments has a significant environmental impact, with wide variation in use and wastage across the UK, according to a new study by UCL ...

Nitrous oxide, commonly known as laughing gas or happy gas, is a colorless, non-flammable gas, with a sweetish odor. It's used in medical and dental procedures as a sedative, relieving anxiety and ...

15:14, Fri, Feb 27, 2026 Updated: 16:20, Fri, Feb 27, 2026 Dentists are using too much laughing gas, with huge variation in dose and flow rate during sedation, a study has found. Nitrous oxide (N₂O) ...