My question is that I am on Butrans 20 every week and I have recently been put on Percocet for breakthrough pain. I find that the Percocet mixes well with the Butrans but I am wondering that since I am dependent on the Butrans being on it for almost 9 years will I be risking a dependence to Percocet using them or does the dependence on Butrans make it so I am safe from becoming dependent on Percocet as well?