Dental Admissions Test (DAT) Practice Test

The primary ingredient in most toothpaste that effectively fights cavities is fluoride. Fluoride is a mineral that helps to remineralize tooth enamel, making it more resistant to decay caused by acid-producing bacteria in the mouth. When fluoride is incorporated into toothpaste, it works by strengthening the tooth structure and reducing the ability of harmful bacteria to produce acid that can lead to cavities.

In addition to aiding in the prevention of cavities, fluoride can also help reverse early signs of tooth decay. Many dental health organizations recommend the use of fluoride as a crucial part of oral hygiene practices for both children and adults to maintain strong and healthy teeth.

While other ingredients like calcium carbonate can serve as abrasives to help clean teeth, sodium lauryl sulfate acts as a foaming agent, and vitamins are not commonly recognized as effective against cavities, it is fluoride that plays the most significant role in cavity prevention.