Nitrous oxide
Laughing gas. The mildest of the three and the fastest acting, with the shortest recovery. In most cases you can drive yourself home afterwards. Some patients still fall asleep in the chair, which is often exactly the point.

Full-arch surgery takes hours. Sedation is what turns those hours into something you do not remember, and what makes it possible to do the whole case in one sitting instead of five.
Dental anxiety is not a character flaw and it is not rare. What makes it worth solving is what it delays: gum disease and other oral disease are associated with raised risk of diabetes, stroke and cardiovascular disease. Postponing treatment out of fear is a decision with consequences beyond the mouth.
Sedation is offered here for any procedure, not only surgery. It is worth asking about if any of these are true:
Which one is right depends on the extent of treatment and on your own medical history. Oral and IV sedation are administered by a medical anaesthesiologist.
Laughing gas. The mildest of the three and the fastest acting, with the shortest recovery. In most cases you can drive yourself home afterwards. Some patients still fall asleep in the chair, which is often exactly the point.
Taken before the appointment, administered under the supervision of a medical anaesthesiologist. Deeper than nitrous. Transport to and from the practice needs arranging in advance.
The strongest option available, reserved for severe dental anxiety and for long surgical cases. Most patients have no memory of the appointment at all. Transport both ways is required.

Plenty of practices refer sedation out. Dr. Nahlah holds an IV Sedation Certificate and hospital privileges at Inova Fairfax, the only Level 1 trauma hospital in Northern Virginia, and works with a medical anaesthesiologist for oral and IV cases.
That combination is what lets a full-arch case be planned as one long sitting rather than split across visits to accommodate someone else’s schedule.
It changes how the appointment is planned, and it is the most useful thing you can tell us in advance.