Nitrous Oxide (“Laughing Gas”)
Nitrous oxide—often called laughing gas—is a safe and gentle way to help patients relax during dental treatment. You breathe it in through a small, comfortable nose mask, and within a few minutes you feel calmer, lighter, and less worried. You stay awake the entire time and can talk to us normally.
Once your treatment is finished, we give you pure oxygen for a few minutes. The effects wear off quickly, and most patients feel completely back to normal before they leave the office.
Nitrous oxide is helpful for:
Before Your Appointment
After Your Appointment
Nitrous oxide wears off quickly, so you can usually return to normal activities right away.
Nitrous oxide is generally avoided during the first trimester of pregnancy. This is the stage when the baby’s organs are forming, and even small changes in vitamin B12 activity may pose a theoretical risk. There is no strong evidence of harm, but because research is limited, dentists follow a “better safe than sorry” approach.
After the first trimester, nitrous oxide may be considered safe for many patients, but we will always review your medical history and coordinate with your physician if needed.
Who Should Avoid Nitrous Oxide?
Nitrous oxide is safe for most people, but it may not be recommended if you have:
Once your treatment is finished, we give you pure oxygen for a few minutes. The effects wear off quickly, and most patients feel completely back to normal before they leave the office.
Nitrous oxide is helpful for:
- Dental anxiety
- A strong gag reflex
- Children or adults who need help relaxing
- Patients who want a more comfortable experience during longer appointments
Before Your Appointment
- You may eat a light meal a few hours before your visit.
- Take your regular medications unless your dentist or physician has advised otherwise.
- Wear comfortable clothing.
- Let us know if you have a cold, sinus congestion, or trouble breathing through your nose.
- Tell us if you are pregnant or think you may be pregnant.
After Your Appointment
Nitrous oxide wears off quickly, so you can usually return to normal activities right away.
- You may drive yourself home once you feel fully alert.
- You can return to work or school.
- Avoid alcohol for the rest of the day.
- Contact us if you feel unusually dizzy or nauseous.
Nitrous oxide is generally avoided during the first trimester of pregnancy. This is the stage when the baby’s organs are forming, and even small changes in vitamin B12 activity may pose a theoretical risk. There is no strong evidence of harm, but because research is limited, dentists follow a “better safe than sorry” approach.
After the first trimester, nitrous oxide may be considered safe for many patients, but we will always review your medical history and coordinate with your physician if needed.
Who Should Avoid Nitrous Oxide?
Nitrous oxide is safe for most people, but it may not be recommended if you have:
- Vitamin B12 deficiency or certain metabolic conditions
- Severe nasal congestion or sinus blockage (you must be able to breathe through your nose)
- Severe respiratory conditions, such as advanced COPD
- Middle ear problems, recent ear surgery, or chronic ear infections
- Recent retinal eye surgery involving a gas bubble
- Early pregnancy
- A history of severe anxiety or claustrophobia with masks
