Nitrous Oxide is a sweet smelling, non irritating, colorless gas which you can breathe.
Nitrous Oxide (laughing gas) has been the primary means of sedation in dentistry for many years. Nitrous oxide is safe; the patient receives 50-70% oxygen with no less than 30% nitrous oxide.
The patient is able to breathe on his or her own and remain in control of all bodily functions.
The patient may experience mild amnesia and may fall asleep not remembering all of what happened during their appointment.
Though there are no major contraindications to using nitrous oxide, you may not want to use it if you have emphysema, exotic chest problems, M.S., a cold or other difficulties with breathing. Pregnancy is a contraindication to using Nitrous Oxide.
You may want to ask your dentist for a "5 minute trial" to see how you feel with this type of sedation method before proceeding.