Nitrous Oxide, also known as “laughing gas,” is used to relax patients for their dental treatment. Nitrous oxide is a blend of two gases, nitrogen and oxygen, and it is given through a small breathing mask which is placed over the child’s nose. The gas allows the child to relax when breathed through the nose, with the child remaining fully conscious, keeping all reflexes intact, without putting them to sleep. The American Academy of Pediatric Dentistry recognizes this technique as a very safe, effective technique to use for treating children’s dental needs. The gas is mild, odorless, easily titrated and reversible, and recovery is rapid and complete.