As I understand it, saliva reduces the acidity in the mouth. Which I took to mean that there's a brief amount of time where the betel nut can cause redness of the teeth. Once the body starts producing enough saliva, the mouth is no longer acidic, and the dye effect is reduced. wrnk d2
> The mouth is acidic when chewing betel nuts. Which (I think) causes > the dyeing effect on the teeth. I'm wondering if the betel nuts > could be dyed, using an acid bath. Would they need to be crushed? Does saliva create the ideal environment for dye take-up in the mouth (situation)?
