Does anyone know if Flexible Spending Accounts can be used to pay for Sedation Dentistry?

Regular dental insurance does not pay for the sedation for sedation dentistry. FSA can be used to pay for many health-related items that insurance doesn’t pay for (chiropractor, LASIK, etc) but not everything (does not pay for vitamins/supplements in most cases). Does anyone happen to know if FSA can be used to pay for the sedation for sedation dentistry?
Thank you!