What Strengthens the Tooth Enamel?

Various substances can make tooth enamel stronger; many of them contain one of two important ingredients. When something strengthens the enamel, it prevents cavities and other tooth problems. It also helps counteract the negative effects of enamel-harming foods and drinks, such as high-sugar beverages and hard candy. It's especially important for children to strengthen their tooth enamel, but adults can benefit from this as well.

Toothpaste

• Most toothpaste manufacturers add fluoride to their products. The teeth directly absorb fluoride from toothpaste, according to the North Carolina Department of Health and Human Services. Fluoride significantly strengthens tooth enamel. See the toothpaste box or tube for details on its fluoride content. The amount of fluoride typically appears under the Active Ingredient heading.

Chewing Gum

• If it's the right type, gum strengthens tooth enamel. Chewing gum and other products containing xylitol provide a variety of dental benefits, according to the American Dental Hygienists' Association. Xylitol is also present in some fruits and vegetables, including lettuce and mushrooms. Not all chewing gums contain xylitol; check the list of ingredients printed on the outer package.

Tap Water

• It's also possible to strengthen tooth enamel by ingesting small amounts of fluoride. One common source of fluoride is tap water, although some water filters remove it. The North Carolina Department of Health and Human Services indicates that fluoridated water strengthens tooth enamel and it costs little for towns and cities to implement. Water isn't the exclusive source of ingested fluoride. Some foods contain it and fluoride supplements remain available in various forms.

Calcium

• A variety of foods, some supplements and dental products contain calcium. Calcium in saliva protects tooth enamel. The concept that calcium strengthens enamel remains less established than the effects of xylitol and fluoride, but calcium is well known to provide other health benefits. However, excessive calcium levels may cause health problems such as kidney stones, according to the National Institutes of Health. Excess levels are usually caused by supplements or existing medical conditions.

Mouthwash

• Many mouthwashes contain an ingredient, such as xylitol or fluoride, that strengthens tooth enamel. As with gum and toothpaste, the substances in mouthwash benefit teeth through direct application rather than ingestion. Mouthwash can also help prevent or remedy various other dental and oral health problems, but cannot act as a substitute for regular brushing or flossing.