Nitrous oxide/oxygen analgesia/Laughing gas
Nitrous oxide, or laughing gas, is the most frequently used method for easing mild to moderate anxiety. Administered through a small mask that fits over your nose, it is an effective way to calm anxiety, raise your child's pain threshold, and even make time seem like it's passing quicker than usual. As the gas begins to work, your child will become calm, although they will still be awake and able to talk with the dentist.
At the end of your child's appointment, they will resume breathing regular oxygen, and all the effects of nitrous oxide will disappear, so they can resume normal activities immediately.