Inhaled
Nitrous oxide
You breathe it through a small mask that sits over your nose, mixed with oxygen. It takes effect within a few minutes, and it leaves the same way it arrived — you breathe it back out, so it clears within minutes of the mask coming off. That one fact is why this option behaves so differently from the other two. You stay awake and able to talk the whole time. Most people describe a light, floaty calm and a sense of not much minding what is going on.
- How it is given
- Breathed through a mask over your nose
- What most people remember
- The appointment, in normal detail
- Driving home
- Most people are cleared to drive themselves, and the dentist confirms that with you on the day
Tablet
Oral sedation
A tablet, taken before your appointment. It is absorbed through your digestive system, so it comes on gradually and cannot be turned up or down once it is working — that single limitation shapes everything else about this option. It goes deeper than nitrous. You stay able to respond, but many people remember little of the visit afterwards, and for someone carrying a bad memory of a previous appointment, that gap is often the point.
- How it is given
- A tablet, taken before you arrive
- What most people remember
- Patchy, and often very little
- Driving home
- No. Arrange a driver both ways, and expect to need the rest of the day for it to clear
Intravenous
IV sedation
Given through a small line placed in a vein in the arm or hand. Because it reaches the bloodstream directly rather than by way of the stomach, the level can be adjusted continuously while treatment is happening, instead of being fixed the moment a tablet is swallowed. It is the deepest of the three. Recall of the appointment is usually minimal or absent. It typically suits severe anxiety, long or complex treatment, and people for whom the lighter options have not been enough.
- How it is given
- Through a small line placed in a vein
- What most people remember
- Usually little or nothing
- Driving home
- No. Arrange a driver, plan a quiet rest of the day, and expect a more detailed medical review beforehand