Dental erosion

Dental erosion is the chemical dissolution of tooth enamel and dentine by acidic substances without the involvement of bacteria. It is an irreversible process that can thin and weaken teeth when they are repeatedly exposed to acids.

Acid Attacks on Enamel

When the pH in the mouth drops below about 5.5 the minerals that make up tooth enamel begin to dissolve. Sports drinks, sodas and fruit juices often have pH values between 2.7 and 4.0, making them erosive. The acids used to flavour and preserve these drinks (citric and phosphoric acid) can soften the enamel surface after just a few minutes. Repeated sips prolong the time that teeth are bathed in acid, especially during long training sessions, and brushing immediately afterward can remove the softened layer. Over months or years this leads to thinning of the enamel, yellowing due to exposed dentine and sensitivity. Saliva normally buffers acids, but during intense exercise saliva flow declines, reducing protection. Because the damage is cumulative and permanent, limiting the frequency and duration of acid exposure is crucial.

Protecting Your Teeth

There are practical steps to reduce the risk of erosion while still using sports drinks. Drink them quickly rather than sipping over long periods, and alternate with plain water to rinse away acids. Use a straw or nozzle to minimise contact with the teeth. Rinse your mouth with water or a neutral beverage like milk after finishing, and wait at least 30 minutes before bru pH or lower acid content when possible, and avoid swishing drinks around the mouth. During t good oral hygiene and regular dental check‑ups can help detect early signs of erosion.

Dental erosion undermines tooth strength and aesthetics, but it is preventable. By moderating intake of acidic beverages, using protective practices and allowing saliva time to remineralise enamel, athletes can balance performance hydration with long-term oral health.

Related Terms: Enamel demineralization, Non‑nutritive sweetener tolerance, Hypotonic, Isotonic, GI training