Your guide to nitrous oxide/oxygen sedation
Nitrous oxide is an odorless and colorless gas. In the early 1800s a British scientist found that inhaling nitrous produces highly pleasurable sensations. New York dentist Horace Wells learned in 1844 that nitrous could distract patients from acute pain such as the type associated with tooth extraction. Dentistry has relied upon nitrous oxide ever since then, but the techniques, type of gas mixture and delivery methods have been greatly improved.