Laughing gas is the most appropriate solution for those who suffer from fear of needles that are used to administer long-impact local anesthesia.

In addition, it is safe for children over the age of three years and also for adults without any complications, except in rare cases where use of laughing gas is prohibited, such as for those suffering from sclerosis or pulmonary blisters.

Some dentists offer their patients to try laughing gas for five minutes before their treatment to help them make a decision. After the use of laughing gas, the patient can drive safely without the need of an escort.

One of the advantages of this gas is that nitrous oxide's affects occur within a short period of time as it reaches the brain within 20 seconds, which leads to pain reduction in two or three minutes.

It also does not require injections or needles and the effect of the anesthesia stops only five minutes after taking the dose.