Well, according to this site, that blend is good for your dental health. You can read their testimonials and information there.
While, I do think essential oils can kill bacteria. I think need for mechanical disruption on a daily basis is more important.
Therefore, these oils are an aid, but NOT a cure-all. Please be careful with that.
If you don't believe me, you can ask a periodontist. I think you will get a good solid answer there.
The Journal of Clinical Periodontology is the professional journal that many periodontists read.
There is one machine that was studied and written about twice in this journal for its ability to reduce plaque and tartar build up between office visits. You can read about this home use machine here.
Author: What You Should Know About Gum Disease
PS: my favorite tool for dental health
PPS: PS: Get your free guides on fighting gum disease and stopping bad breath