A friend who had radiation treatment for OC years ago, suggested that I get mouth guards.
I just went to the dentist to inquire about them, and she said that I should get floruide trays, so I did get the impressions to get the trays created.
But I asked if there was also a mouth guard to wear during the radiation, and she said you can wear the trays during rads.
Is this correct, or is there some other kind of mouth guard to wear during rads? If so, is it something that is not custom made for each individual? Just OTC?
I have a lot of dental work, and two incomplete implants, so I want to do the utmost to protect my teeth, gums and jaw during rads.
Any suggestions would be well appreciated.

Enlarged left cervical lymph node in neck on 1/9/18. Male, age 60. Had retired from working as a computer technician and a project manager for almost 38 years, on 7/1/17.
Node was removed 1/16/18 and found to have SCC P16.
Chest xray clean.
Since then, PET/CT, slight activity left parotid, possible malignancy left lingual tonsil. MRI clean.
3 endoscopies, nothing seen.
2/26/18 Larryngoscopy,primary not found.
TORS 3/23/18 lingual tonsil biopsy.,biopsy negative.
Chemo/rads started 4/18/18.