I'm curious as to which is the world best toothpaste ?

Normal, fluoride tp.: The cleaning effect during brushing is more of a mechanical effect than a chemical effect. Having said that, brushing with short horizontal stroke (or elliptical stroke) along the gum line is the best and should be done with a soft bristle brush. Fluoride helps with the minty fresh after taste and to a small degree help to combat tooth decay. Avoid expensive tooth paste with abrasive fillers!

Toothpaste: Toothpastes help to clean teeth because they are abrasive. They contain flavorings as well. Some contain Fluoride which can be an aid in reducing cavities. Bottom line- chose the one you'll use at least twice a day.

Almost all the same: Toothpaste is used for refreshments and also some has flourid in it that protect teeth from cavities, other than that any type is just fine to use.. Technically you can brush you teeth without toothpaste , only brush and water is as good..

No SLS: Many toothpastes contain sodium lauryl sulfate, or sls. This ingredient is also found in personal care products, including soap, shampoo and mouthwash. Sls provides the “foaming action” that makes you feel like something spectacular is happening in your mouth. This ingredient has also been linked to recurrent canker sores. Try changing to toothpaste that is "sls free, ".

Toothpaste: For what? Decay prevention, hypersensitivity, whitening, gum inflammation, hypoallergenic, etc. Ask your Dentist for recommendation, we are proscribed from product recommendation by name on this site. Look for a toothpaste that contains fluoride and that has the American Dental Association Seal on the package.