Percocet contains oxycodone, a Schedule II controlled substance. As an opioid, Percocet exposes users to the risks of addiction, abuse, and misuse [see DRUG ABUSE AND DEPENDENCE]. Although the risk of addiction in any individual is unknown, it can occur in patients appropriately prescribed Percocet.
Use a waterpik! It is a miracle for cleaning under the gumline and in between teeth. You'll actually smell that awful smell coming out, but do it 2x a day and it'll fix that kind of odor. Don't forget, it doesn't replace flossing. All pharmacies and walmart, etc sell them.
Many sufferers complain of a continuous metallic taste in their mouth. This is from the iron in the blood which produces the metallic taste. With the blood loss, the breath can become worse. First it'll have an iron or metallic smell and then change into a more foul scent as the blood decomposes. While checking for bad breath, check to see if there's inflammation of the gums and blood. This will be a good indicator that the bad breath is due to gum disease. Reference: Mouth Health: Bad Breath.