Nitrous Oxide Sedation at the Dentist — What to Expect
Nitrous oxide sedation — commonly known as laughing gas — induces a state of deep relaxation during dental treatment, reducing anxiety, pain perception and emotional stress without putting the patient to sleep. Dr. Lucía Asensio Romero and the team at Asensio Advanced Dentistry in Valencia have used nitrous oxide alongside IV conscious sedation for many years, allowing anxious patients to receive comprehensive dental treatment comfortably.
Nitrous oxide is the most widely used sedation method in dentistry across the USA, France, Australia and Scandinavia — countries with the most developed dental anaesthesiology practices. It has an excellent safety record and is suitable for the vast majority of patients, including those with dental phobia who have avoided treatment for years.
The first consultation is completely free. Call us on 0800 048 8058 or email office@dentalasensio.co.uk to book.
Nitrous oxide vs IV sedation — comparison
| Factor | Nitrous oxide | IV conscious sedation |
|---|---|---|
| Administration | Inhaled through a nasal mask | Intravenous — administered by anaesthesiologist |
| Level of sedation | Mild to moderate — patient remains conscious and responsive | Deep — patient is in a twilight state, often with no memory of the procedure |
| Recovery time | 5–10 minutes — patient can drive after | Several hours — patient must be accompanied home |
| Best for | Mild to moderate anxiety, routine or moderate treatments | Severe phobia, complex or lengthy procedures |
| Available at Asensio | Yes | Yes — with anaesthesiologist present |
Frequently asked questions
Does nitrous oxide work for severe dental phobia?
For severe phobia, IV conscious sedation is usually more appropriate — it provides a deeper level of relaxation and most patients have little or no memory of the procedure afterwards. See our full guide to conscious sedation abroad at Asensio.
Is nitrous oxide safe?
Yes — nitrous oxide has been used safely in dentistry for over 150 years. At Asensio we use the Master Flux Plus Italian system, which precisely controls the ratio of nitrous oxide to oxygen throughout the procedure. The effects wear off within minutes of removing the mask.
Can I drive after nitrous oxide sedation?
Yes — nitrous oxide clears from the system rapidly. After a short recovery period of 5–10 minutes breathing pure oxygen, most patients can drive. This is one of the key advantages over IV sedation, which requires a companion to accompany you home.
Related guides
- Conscious sedation abroad — full guide to sedation options at Asensio
- Special patients — dental treatment for medically complex cases
- Dental implants abroad — sedation available for implant surgery
- Dental implants before & after — real patient results at Asensio
- How dental tourism in Spain works — planning your trip to Valencia
