I'm sorry to say that toasted sesame oil is not good. You should not be swishing with any toasted seed or nut. The heat saps the healthy benefits. That is why you should have cold pressed (expeller pressed is good too), so you can reap all the benefits this therapy offers. Even if you have refined safflower, I'd do that before I do toasted sesame. Olive-Oil has been known to discolor some peoples teeth.