They provide a large amount of fluoride (1500 ppm), which is very beneficial. Children take many years to develop cavities. The anti-cavity effects of fluoride are enhanced with the addition of calcium, which affects tooth enamel. The combination of fluoride and calcium in Lacer Junior Gel Toothpaste protects plaque, strengthening its structure and preventing the abrasion that occurs in the presence of acids when sugar is mixed with food. Lacer Junior Toothpaste Gel is mildly abrasive , paraben- and gum-free, and easy to tolerate. It comes in two flavors: Strawberry and Mint.