“What toothpaste helps build enamel?”

The best toothpastes and supplemental therapies to help strengthen enamel are prescribed by a dentist as they are not sold over the counter. That being said, if you lost your enamel, you will not be able to gain much back, however we can strengthen what is left.

Many over-the-counter TPs will help with that. Usually .14% active fluoride ion active ingredient. Mouth rinses usually have less. If you want maximum protection, get a dentist to RX a toothpaste that has 5000 ppm of active fluoride to actually help you remineralize weak areas of enamel.

Any toothpaste which contains the recommended levels of fluoride will assist in helping to strengthen enamel.

None of them really do once the enamel is actually lost. Typically, enamel is strengthened by certain minerals that these toothpastes may contain. See your dentist for best solution to assess and treat your ailments.

While all toothpastes with fluoride make your teeth more resistant to cavities, Pronamel toothpaste reportedly strengthens enamel as well.

First you want to maintain and protect the current state of your teeth. Toothpastes that “whiten” do so by removing discolorations that are ON the tooth. That means they have to have stronger abrasive to do so. They do not change the “whiteness” of the tooth itself. Toothpaste that “whitens” is not what you are looking for. Other toothpastes have abrasives as well. It is impossible to know how abrasive they are. Read the labels of toothpastes with tastes you like to decide. You definitely want toothpaste with fluoride.
Dipping your brush into baking soda and salt in the palm of your hand remains an excellent choice. It may be the least abrasive. You will receive no fluoride protection from this however. You could alternate if you want.
There are some toothpastes sold only to dentists that may be the closest to what you are after. They have claims of improving the teeth as well as protecting them. Talk to your dentist for more information on this.
I am glad you are interested in your teeth. There is a great amount of information about protecting teeth in the book GROWING A HEALTHY CHILD, SECRETS FROM A WISE OLD DOC.
Good luck.

If indicated, your dentist can prescribe a prescription tooth paste that will help. Prodent and Prevident are two of the name brands. These can stain children’s teeth.