Enamel Erosion
Can acid reflux or heartburn actually damage your teeth?
21 September 2026 · The Dentist, Al Qusais, Dubai
The short answer
Yes. Stomach acid that reaches the mouth during reflux or heartburn is far more acidic than most foods and drinks, and repeated exposure wears away enamel, usually starting on the inside surfaces of the upper back teeth. This erosion is often silent for years until teeth become sensitive, thin, or discoloured. Managing the reflux itself, alongside dental monitoring, is the only way to stop it progressing.
Why stomach acid is worse than dietary acid
The acid in your stomach has a pH of around 1.5 to 2. Compare that to orange juice or fizzy drinks, which sit around pH 3 to 4. When that stomach acid washes up into the mouth, whether from GERD, frequent heartburn, or silent reflux that you barely notice, it dissolves the mineral structure of enamel far faster than anything you eat or drink normally would.
The pattern of damage also gives it away. Erosion from food and drink tends to show up on the front surfaces of the upper teeth, where the liquid or acid contacts them directly. Reflux erosion shows up on the back of the upper teeth and the biting surfaces of the molars, because that's where the acid pools when it comes up from below, especially at night when you're lying flat and producing less saliva to buffer it.
Silent reflux is the trickier one. Some people have enough acid reaching the throat and mouth to damage teeth without ever feeling classic heartburn. If a dentist spots unexplained erosion with no obvious dietary cause, reflux is one of the first things worth ruling out with your GP.
What the erosion actually looks like and feels like
Early signs are subtle: teeth that look slightly more yellow because the enamel has thinned and the dentin underneath is showing through, or edges that look smooth and rounded rather than sharp. Sensitivity to cold drinks or sweet foods is often the first thing patients notice themselves.
Left unmanaged for years, the erosion deepens. Molars can develop cupped, dished-out areas on their biting surfaces. Teeth can become shorter, more brittle, and more prone to chipping. In more advanced cases, the bite itself changes shape because so much tooth structure has been lost evenly across the back teeth.
None of this happens overnight. It's a slow, cumulative process, which is exactly why regular checkups matter: a dentist tracking your teeth year to year can catch the pattern early, long before you'd notice it yourself in the mirror.
What actually helps, and when to get checked
The most effective step is managing the reflux itself, ideally with your GP or a gastroenterologist: medication, diet adjustments, raising the head of the bed, and treating any underlying cause. On the dental side, avoid brushing immediately after a reflux episode or vomiting, since the enamel is temporarily softened and brushing straight away can scrub away more of it. Rinsing with plain water, or better, a fluoride mouth rinse, and waiting around 30 minutes before brushing gives the enamel a chance to reharden.
A dentist can also apply fluoride treatments to strengthen weakened enamel, and in cases where erosion has already caused noticeable thinning or sensitivity, options like bonding, crowns, or veneers can restore the tooth's shape and protect what's left. The right approach depends entirely on how much structure has been lost, which is something that needs a proper look in the chair rather than a guess from a description.
If you've noticed sensitivity, a change in how your teeth look, or you know reflux is a regular issue for you, it's worth having it checked before it progresses further. The Dentist in Al Qusais offers a free checkup for new patients, which is a straightforward way to find out where things stand and get a written plan if any treatment is needed. You can book via WhatsApp or through thedentist.ae/book.
This article is general information, not a diagnosis. If you are in Dubai, the free first checkup at our Al Qusais clinic is the fastest way to get an answer about your own teeth.