Just prior to the more painful mouth palate injections in preparation for oral surgery can a patient request nitrous oxide as an helpful aid, or not?

Yes: Also ask the dentist to use topical anesthetic prior to the injection. Topical won't help a lot, but combined withe the nitrous should help ease the soreness from the injection.

Sure, or a general.: Palatal, roof of the mouth injections, for oral surgery procedures such as dental implants etc. Can be uncomfortable. Sometimes a topical anesthetic and a little distracting pressure with a dental instrument will suffice. Otherwise, nitrous oxide. (inexpensive) oral sedation more ( expensive) twilight sleep or general anesthesia (most expensive) does the job. What is it worth to you?

Yes but...: Not all offices have nitrous oxide, but there are several offices that provide sedation dentistry, which won't put you totally out, but will provide comfort and relaxation. If this is an oral surgeon, you can request to be totally put to sleep during the procedure. Ask a lot of questions first.

Nitrous Oxide: The use of nitrous oxide, not only just prior to the palatal injection but for the entire procedure is a great aid to reduce stress and make you feel more comfortable. It can be used for any dental procedure. Almost all of my patients who have tried it, love it and request it all the time.