Nitrous Oxide, known to many as laughing gas, is most commonly used in pediatric dentistry. It is administered by having the patient inhale the gas, which is carefully monitored by your doctor. Nitrous oxide will help you to relax and decrease fear and anxiety. It helps make dental procedures more pleasant. Nitrous oxide is very safe and effective. Once the procedure is over the nitrous oxide will wear off fairly quickly and, in most cases you will be able to return to your daily activities