Some children are given nitrous oxide/oxygen - or what you may know as laughing gas - to relax them for their dental treatment. Nitrous oxide/oxygen is a blend of two gases, oxygen and nitrous oxide. Nitrous oxide/oxygen is given through a small breathing mask which is placed over the child’s nose, allowing them to relax without putting them to sleep. The American Academy of Pediatric Dentistry recognizes this technique as a very safe, effective technique for treating children’s dental needs. The gas is mild, easily taken, and it is quickly eliminated from the body and it is non-addictive. While inhaling nitrous oxide/oxygen, your child remains fully conscious and maintains all of their natural reflexes.