I accidentally ingested some of my denture cleanser. is itdangerous?

Probably no big deal: If it was a small amount, i don't think you need to worry.

No: If it was a small amount you shouldn't have to worry.

Check the label: Depending on how much of the cleanser you actually ingested, it may not pose any real emergency. I'd call the manufacturer of the product you used and get the specifics on the ingredient list or call the poison control center asap if you're having any signs or symptoms from throwing up, pain, rash, etc. If you're having severe problems, go immediately to the emergency room.

If you are worried: Go to the emergency room if necessary. However, most cleansers are formulated so that they are not toxic to the human system.

Dangerous?: No. But try not to make a habit of it just like you wouldn't ingest soap.