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Nitrous Oxide Explained: Will It Put You to Sleep at the Dentist?

March 7, 2025

Patient relaxing with sedation dentistry

Dental anxiety is incredibly common, which is why so many dentists offer sedation dentistry in the form of nitrous oxide. Often known as “laughing gas,” this sedation medication can help patients feel more at ease. However, many patients refuse to use it because the idea of falling asleep at the dentist is frightening.

But does it really make you sleepy? Keep reading to clear the air on what this sedation method does and how it can help you receive necessary treatment.

What Is Nitrous Oxide Exactly?

Nitrous oxide is a fast-acting gas mixed with oxygen and delivered through a small mask placed over your nose. It’s one of the most commonly used forms of sedation in dentistry because it’s incredibly safe, effective, and easy to control.

The gas itself is odorless, colorless, and works by slowing nerve signals from your brain to the rest of your body. This dulls your senses, lessening your sensitivity to stimuli including touch, sight, and sound.

Will Sedation Dentistry with Nitrous Oxide Put Me to Sleep?

Most patients describe the sensation of using nitrous oxide as a floating, slightly warm feeling. You might feel light-headed, tingly, or even a little giggly—hence its nickname. Some people also feel like time passes more quickly or that their limbs feel lighter.

However, you’ll be fully conscious and responsive during the entire appointment. You’ll be able to talk, listen, and even ask questions if needed without issue. Nitrous oxide just takes the edge off so you can get through your treatment with a lot less stress.

Will I Feel “Out of It” After My Appointment?

One of the best things about nitrous oxide is how quickly it wears off. Once your dentist turns off the gas and you breathe regular oxygen again, the effects typically fade within a few minutes. You should be able to drive yourself home and return to your normal routine without any lingering effects.

This makes nitrous great for people who want to relax during their appointment but still stay in control and bounce back quickly.

Nitrous oxide is a perfectly safe and non-drowsy sedation dentistry method that can help you get the treatment you need. If you’re unsure whether it’s the right fit, your dentist can talk you through your options and help you decide what’s best for your comfort and health.

About the Practice

At Goodyear Family Dentistry, our compassionate team of knowledgeable dental experts loves helping patients achieve their best smiles. We understand that for many, treatment is nerve-wracking. That’s why we’re proud to offer safe and effective sedation dentistry using nitrous oxide. Call (520) 521-0387 to schedule a consultation with us or visit our website to see a full menu of services.