It was mentioned in chapter 7 Healthy Gums Lead to Healthy Teeth. He quotes Dr. Phillips: The truth of the matter is that brushing and flossing causes periodontal disease. His video explains more - the dentist tells you to brush more, floss more, and no amount of brushing or flossing will cure the disease, and since it's concentrating more tatar under the gum line, it will worsen it.

More here: How Periodontal Disease Progesses

If your dentist says “you have to brush more because you have plaque on your teeth” and the next time you see him he says “you have to brush still more and floss more because your gums are bleeding” and he suggests that you see the hygienist more often for cleaning your teeth, you will soon be a candidate for deep curettage and periodontal (gum) surgery.

Frequent brushing and flossing, cleaning by the hygienist and gum surgery never cure periodontal disease. As time goes on this leads to more curettage and surgery, and eventually, extraction of the teeth.

The truth of the matter is that brushing and flossing causes periodontal disease. Cleaning under the gums daily will keep the disease from getting started and, in most cases, will heal the gums. By using a special bristled brush with much the same texture as a paint brush, it can draw plaque from underneath the gum and heal gum disease in over 98% of the cases. This will also keep the gum disease from reoccurring.

I always told my patients “if you want to see what brushing does, just lay a rug on a dirty kitchen floor and brush or sweep around and onto the rug and when you lift the rug up, you will see that most of the dirt is packed at the edge of the rug.” The same thing happens when your brush you teeth. The sulcus (the groove between the gum and the tooth) is always the dirtiest after brushing. You should not brush your teeth unless you can clean the sulcus out afterwards.

If you use the Blotting Brush (recommended for this cleaning technique) to clean under the gum plus the entire mouth, you will have a healthy mouth and a pleasant breath.

Research update: US researchers studied 657 people and found that those with gum disease were more likely to have narrowed blood vessels that can lead to a heart attack or stroke. Scientists theorise that the bacteria that causes gum disease spreads through the bloodstream and causes inflammation and clogged arteries.