Nitrous Oxide (laughing gas)
Nitrous Oxide is a sweet-smelling, non-irritating, colorless gas which you can breathe.
Nitrous Oxide 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 their 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.
There are many advantages to using Nitrous Oxide
- The depth of sedation can be altered at any time to increase or decrease sedation.
- There is no after effect such as a “hangover”.
- Inhalation sedation is safe with no side effects on your heart and lungs, etc.
- Inhalation sedation is very effective in minimizing gagging.
- It works rapidly as it reaches the brain within 20 seconds. In as little as 2-3 minutes its relaxation and pain killing properties develop.
Reasons to not use Nitrous Oxide
You should not utilize Nitrous Oxide if you have been diagnosed with chronic obstructive pulmonary disease (COPD). Though there are no other 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.
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.
Frequently Asked Questions
Will I be asleep?
No. Nitrous oxide relaxes you but you stay awake, aware and able to talk to us throughout. You breathe on your own and remain in control. Most people describe a light, slightly floaty feeling and say the appointment seemed to pass more quickly. If you are hoping to be unconscious, that is not what this is, and it is worth saying so before we start.
Can I drive myself home afterward?
Usually yes, and this is the main practical difference between nitrous oxide and oral sedation. The effects clear within minutes of the gas being stopped, and we give you pure oxygen at the end to clear it fully. Most people go straight back to their day. We will check you feel completely normal before you leave.
How quickly does it work and wear off?
Both happen quickly, which is a large part of why it has been used in dentistry for so long. It takes effect within a few minutes and the level can be adjusted up or down during the appointment as needed. Once the gas is switched off it clears from your system within about five minutes.
Is it suitable for children?
It is commonly used with children and is often a good option for a nervous child who needs treatment but does not need full sedation. Whether it suits your child depends on their age, how well they can breathe comfortably through a nose mask, and their medical history. We will go through that with you first.
Are there reasons I should not have it?
Yes, a few. A blocked nose from a cold or congestion is the most common practical obstacle, since it works by being breathed through the nose. Certain respiratory conditions, some medications, and early pregnancy are also reasons to choose something different. Tell us your full medical history and any medications you take, and we will tell you honestly if it is not the right choice.