Your dentist may be the first person to spot your acid reflux. Stomach acid has a pH below 2, which is well under the level of around 5.5 at which tooth enamel starts to dissolve. When reflux reaches the mouth, even without obvious heartburn, it can quietly wear away the surfaces of your teeth. Studies link gastro-oesophageal reflux disease, or GORD, with a meaningfully higher rate of dental erosion, and the pattern of wear is often distinctive enough that a dentist recognises it before a diagnosis has been made.
Key takeaways
- Stomach acid is far stronger than the dietary acids that cause everyday erosion.
- Reflux often erodes the inner and biting surfaces of the back and upper teeth first.
- Silent reflux can damage teeth without causing noticeable heartburn.
- Do not brush straight after reflux or vomiting; rinse first and wait.
- Protecting the teeth and treating the reflux go hand in hand.
The one rule: treat the cause and shield the teeth at the same time
Erosion from reflux is a two-part problem. The teeth need protecting now, and the reflux itself needs treating so the acid stops arriving. Doing only one is not enough. A dentist can repair and shield worn teeth, but if the acid keeps coming the damage continues. Equally, controlling reflux does not rebuild enamel that has already gone. The two jobs run in parallel, usually with your dentist and GP both involved.
How reflux wears teeth down
In GORD, the valve between the stomach and the oesophagus does not close tightly, allowing acid to travel up. When it reaches the mouth, it bathes the teeth in a fluid far more acidic than anything in a normal diet. Enamel begins to soften and dissolve, and over time the tooth surface thins. Because the acid arrives from inside the mouth rather than from food, the wear pattern differs from dietary erosion. For the broader picture of how acids damage teeth, see our guide on tooth enamel erosion.
The signs a dentist looks for
Reflux erosion tends to leave clues that are recognisable once you know them.
- Smooth, cupped hollows on the biting surfaces of back teeth, sometimes with fillings standing slightly proud as the surrounding tooth wears away.
- Thinning, see-through edges on the front teeth, which can look more yellow as the darker dentine shows through.
- Wear on the inner surfaces of the upper teeth, the side facing the tongue, which dietary acids rarely reach.
- Increasing sensitivity to hot, cold, and sweet, as the protective enamel thins.
If you notice teeth that look shorter, more sensitive, or more yellow over time, it is worth a check. The same symptoms can overlap with grinding, so a dentist will work out which is driving the wear.
Silent reflux: damage without heartburn
Not everyone with reflux feels it. So-called silent reflux can occur during sleep or without the classic burning sensation, which means some people first learn they have a reflux problem when a dentist points out the wear. Reflux at night is particularly damaging because saliva flow drops during sleep, so there is less to wash away and neutralise the acid. If your dentist suspects reflux, a visit to your GP is the next step.
How to protect your teeth
While you and your GP work on the reflux itself, a few habits limit the damage to your teeth.
| Do | Why it helps |
|---|---|
| Rinse with water or a fluoride mouth rinse after reflux | Dilutes and clears the acid quickly |
| Wait at least 30 to 60 minutes before brushing | Softened enamel brushes away if you scrub it too soon |
| Use a fluoride toothpaste, or a stronger one if advised | Helps harden and protect the enamel surface |
| Chew sugar-free gum after meals | Stimulates saliva, the mouth's natural acid buffer |
| Avoid eating late and lying down soon after | Reduces night-time reflux |
The point about not brushing straight away surprises people. Just after an acid attack the enamel is softened, and brushing at that moment scrubs away the weakened surface. Rinse first, then wait. A sugar-free antacid or a dentist-recommended mouth rinse can help in the meantime.
Repairing teeth already worn
Where erosion has already changed the shape or sensitivity of teeth, there are ways to restore them, depending on the extent. Options range from fluoride and sensitivity treatments for early cases, through to bonding, onlays, or crowns where more tooth has been lost. The right choice depends on how much enamel remains, which is why an assessment comes first. Our guide on fillings, inlays, onlays and crowns explains how these restorations compare. There is no benefit to rushing into extensive work before the reflux is controlled, because new restorations sit in the same acidic environment.
Common questions
Can my dentist really tell I have reflux?
A dentist cannot diagnose GORD, but the wear pattern of reflux is often distinctive, especially on the inner surfaces of the upper teeth. Many people are referred to their GP for reflux after a dental check picks up the signs.
Why should I not brush straight after reflux?
Acid temporarily softens enamel. Brushing immediately scrubs away that softened layer. Rinsing with water and waiting 30 to 60 minutes lets the enamel reharden before you brush.
Does treating my reflux reverse the tooth damage?
It stops further erosion, which is the main goal, but it does not regrow lost enamel. Damage already done may need restorative treatment, while controlling the reflux protects what remains.
I get reflux only occasionally. Is that still a risk?
Occasional reflux is far less damaging than frequent or night-time reflux. Still, the protective habits are simple, and persistent or worsening reflux is worth discussing with your GP.
Is reflux erosion the same as erosion from soft drinks?
The mechanism is the same acid softening of enamel, but the source and pattern differ. Reflux acid is stronger and reaches surfaces that food and drink do not, particularly the inner upper teeth.
The takeaway
Acid reflux is a common cause of tooth wear that often goes unnoticed until a dentist spots it. The plan is straightforward: protect the teeth with simple habits, treat the reflux with your GP, and restore any teeth already worn once the acid is under control. Caught early, most reflux erosion can be stopped well before it becomes serious.
If you are worried about worn or sensitive teeth, the team at Lumi Dental in Melrose Park can assess the cause and protect your teeth. Get in touch, see our general dental care, or view current offers on our deals page.
