Researchers worked together from around the globe under the guidance of two professors from UCLAN, and they were able to take a look at 10 people who were mentally sound, and another 10 who were suffering from dementia. The stuff the found is long and complicated, and I leave the complicate stuff to the medical journals, but the lesson here is that you need to take care of your teeth and gums! That means scheduling regular checkups with your dental provider and then doing your part when you're at home! Most people are recommending electric toothbrushes like Sonicares or the Oral B version, and then you absolutely need to floss as well! I know I definitely have trouble sticking with the flossing, but since a I purchased a Sonicare toothbrush a few years ago, I have seen a major improvement with my checkups at the dentist!
All in all, if you want to live to a ripe old age, and be mentally sound, maybe it's time to really buckle down on cleaning your teeth!