You want to blow away your oral bacteria, not your soft tissues or tooth enamel while brushing teeth. Which paste is the right one for you? Just make sure you like it so you don't avoid your teeth brushing duties.
Here's the advice on dentifrice (toothpastes):
Fluoride: It strengthens tooth enamel to ward off cavities. Because it preserves enamel which covers your yellowish dentin layer, it helps tooth whitening and tooth sensitivity. It also reverses early tooth decay. Brush your teeth with fluoride for the best oral health.
But swallow too much fluoride (in your water, your toothpaste or mouth rinse) and you might watch your teeth begin to yellow. It could also make you sick.
Sodium Lauryl Sulfate (SLS): This detergent's foaming action while brushing your teeth lifts away film, bacteria and other debris.
Unfortunately, SLS promotes canker sores, tooth sensitivity, gum irritation and halitosis for some. If you're prone to mouth ulcers or bad breath your teeth brushing should be SLS-free.
Sodium Pyrophosphate: Often found in tartar control toothpastes, this compound may cause tooth sensitivity. And though brushing teeth with this ingredient may prevent tartar, it doesn't get rid of what's already there. Sodium pyrophosphate can irritate gums.
Whiteners: No toothpaste changes tooth color, but some lift certain surface stains. Hydrogen peroxide with baking soda scrubs surfaces and kills certain bacteria that cause gum disease. But peroxide irritates too. Think moderate when brushing your teeth with whiteners.
Abrasives: Hydrated silicas and calcium carbonates are the usual ingredients - the level of abrasiveness varies from paste to paste. Some dentists recommend toothpastes with a lower Relative Dentin Abrasivity (RDA) score (the scale runs from 8-200) according to Consumer Reports, especially if you use an electric toothbrush, tend to over-brush your teeth, or have receding gums.