We do not eat our toothpaste is quantities like we do food.

I was always taught to spit it out.
Small amounts get into the body via the membranes or via swallowing or whatever other means. But spitting it out helps somewhat.

Saccharin is fine.

How to brush
http://www.dentalhealth.ie/dentalhea...ivetoothb.html

Most toothpastes are kind of gross.
For example, what do you thinking causes the foaming action?

What is in this link is gross. This is a warning for those who get disturbed by lists of weird ingredients. It is possible that is it not 100% updated. For ex, I am not sure about the formaldehyde for 2014
http://www.hornellcityschools.com/te...e_bodanis.html

The link from TOM's refers to all their products -- not just toothpaste.
They are slightly better than some other brands.
http://www.tomsofmaine.com/products/...n-Our-Products

M