If you aren't oil pulling yet, you should be... Learn How and Why at the link below.
Now, I will say this, while this article doesn't talk about adding essential oils to help boost the benefits, I have heard of doing this. I warn though, IF you choose to go this route, start SMALL! Start with ONE drop of ONE essential oil. To many or to much essential oil in a mouth that isn't used to it can be quite a shock! Personally, I recommend sticking to coconut oil by itself for a few months before you even consider adding to it.