Have you EVER seen an older buddhist monk with a complete set of teeth, or teeth that weren’t so ROTTEN you couldn’t bear watching them talk much less laugh?
This sounds like folklore BS to me.
That is not what the article suggests. In Mao's case his teeth eventually rotted and fell out. (He refused to brush even though his doctor kept asking him to.)
Brush your teeth, chew cloves, drink green tea I suppose.