Acid Reflux and Teeth: Why Heartburn Can Wear Down Your Enamel
Heartburn and reflux are often thought of as stomach problems, but acid can also affect the mouth. When stomach acid reaches the teeth regularly, it may contribute to enamel erosion, sensitivity and changes in tooth shape over time.
The key idea
Reflux-related tooth wear is not the same as tooth decay. Decay is mainly driven by bacteria and sugar, while erosion is chemical wear caused by acid softening and dissolving tooth enamel.
Quick answer
Acid reflux can expose teeth to stomach acid. If this happens often, the acid may soften and wear away enamel, leading to sensitivity, thinning enamel, smooth shiny surfaces, cupping on back teeth or changes in tooth shape. A dentist may notice these signs and may also recommend speaking with your GP if reflux symptoms are frequent.
On this page
This guide explains how reflux may affect teeth, what signs dentists look for, and how dental and medical care can work together.
How acid reflux can affect your teeth
Reflux happens when stomach contents move back up towards the throat or mouth. When acidic fluid reaches the teeth regularly, it can contribute to chemical tooth wear.
Acid softens enamel
Enamel is the hard outer layer of the tooth. Acid can soften this surface, making it more vulnerable to gradual wear.
Tooth structure can thin
Over time, acid exposure can contribute to thinner enamel, smoother tooth surfaces and more visible yellow dentine underneath.
Sensitivity can increase
As enamel becomes thinner or dentine becomes exposed, teeth may feel sensitive to cold, sweet, acidic foods or brushing.
Signs a dentist may notice
Some people have obvious heartburn. Others have quieter reflux symptoms and may not realise the teeth are showing signs of acid exposure.
Tooth surface changes
- Smooth or shiny enamel surfaces
- Cupping or scooped areas on back teeth
- Thinning or translucent front tooth edges
- Yellow dentine showing through thinner enamel
- Restorations appearing raised as surrounding enamel wears
Symptoms patients may feel
- Cold sensitivity
- Sensitivity to acidic foods or drinks
- Tooth edges feeling thinner or sharper
- Changes in bite or tooth shape
- More frequent chipping in weakened areas
Reflux clues to mention
- Frequent heartburn
- Sour taste in the mouth
- Night reflux or waking with an acidic taste
- Chronic throat clearing or hoarseness
- Frequent vomiting or nausea
Dental erosion is different from tooth decay
Patients often describe any tooth damage as a cavity, but erosion and decay are different problems. They can also happen together.
| Feature | Dental erosion | Tooth decay |
|---|---|---|
| Main process | Acid chemically softens and wears tooth enamel. | Bacteria use sugars and produce acid that damages tooth structure. |
| Common causes | Reflux, vomiting, acidic drinks, acidic foods or frequent acid exposure. | Plaque, sugar frequency, reduced fluoride exposure, dry mouth and plaque traps. |
| Common signs | Smooth shiny surfaces, thinning enamel, cupping, sensitivity and worn edges. | Softened or cavitated areas, dark shadows, food trapping, pain or sensitivity. |
| Dental approach | Identify acid source, protect enamel, reduce sensitivity and restore lost structure when needed. | Remove decay where required, restore the tooth and reduce future decay risk. |
| Medical link | Frequent reflux or vomiting may need GP or medical review. | Medical factors such as dry mouth, medication or diet may increase risk. |
Should you brush straight after reflux or vomiting?
It is understandable to want to brush immediately after reflux or vomiting, but brushing straight away may be harsh on enamel that has just been softened by acid.
What to do first
- Rinse gently with water.
- Consider a fluoride mouth rinse if recommended by your dentist.
- Wait before brushing if the mouth has just been exposed to strong acid.
- Use a soft toothbrush and gentle technique.
Why waiting may help
After acid exposure, enamel can be temporarily softened. Giving saliva time to buffer the acid may reduce the risk of brushing softened tooth surfaces too aggressively.
What may help protect your teeth
The right plan depends on the cause of the acid exposure, how much tooth structure has already changed, and whether sensitivity, decay, grinding or cracks are also present.
Dental monitoring
Photos, scans and regular checks may help monitor whether enamel wear is stable or progressing.
Fluoride support
Your dentist may recommend fluoride toothpaste, varnish or other preventive strategies if suitable.
Diet and drink review
Reducing frequent acidic drink or food exposure can help lower the total acid load on enamel.
Medical review
If reflux symptoms are frequent, your GP can assess whether medical management or investigation is needed.
If tooth structure is already lost
Depending on the amount of wear, options may include monitoring, bonding, fillings, crowns or bite protection. The aim is to protect tooth structure without overtreating early or stable wear.
If grinding is also present
Reflux and tooth grinding are different issues, but both can contribute to tooth wear. If there are signs of grinding or clenching, a night guard assessment may also be discussed.
Scientific and Australian references
This page links to dental and health resources for patients who want to understand the connection between reflux, acid exposure and tooth wear.
Reflux and dental erosion: A 2018 review describes dental erosion as one of the extra-oesophageal complications associated with gastroesophageal reflux disease. Read: Dental erosion in gastro-esophageal reflux disease.
Association between reflux and dental erosion: A systematic review and meta-analysis reported an association between gastroesophageal reflux disease and dental erosion. Read: Association of gastroesophageal reflux disease with dental erosion.
Australian patient information: Healthdirect Australia explains that dental erosion happens when acid wears away and softens enamel, and notes that vomiting can contribute because stomach acid contacts the teeth. Read: Healthdirect: Dental erosion.
Tooth wear and stomach acid: Better Health Channel explains that acids from food, drink or the stomach can wash away enamel and contribute to acid wear. Read: Better Health Channel: Dental erosion.
These links are provided for education only. Frequent reflux, vomiting, chest pain or swallowing concerns should be discussed with a GP or appropriate medical practitioner.
Related EasyCare guides and services
These pages help connect reflux-related tooth wear with the dental issues patients often notice first.
Common questions
Simple answers to common questions about reflux, enamel erosion and tooth sensitivity.
Can acid reflux damage teeth?
Acid reflux can expose teeth to stomach acid. If this happens frequently, it may contribute to enamel erosion, tooth sensitivity and gradual changes in tooth shape.
Is dental erosion the same as tooth decay?
No. Dental erosion is chemical tooth wear caused by acid softening and dissolving enamel. Tooth decay involves bacteria, plaque and sugars damaging tooth structure.
What signs of reflux damage can a dentist see?
A dentist may notice smooth shiny enamel, cupping on back teeth, thinning edges, yellow dentine showing through, sensitivity or restorations that appear raised as enamel wears around them.
Should I brush immediately after reflux or vomiting?
It is usually better to rinse with water first and avoid brushing immediately after strong acid exposure. Enamel can be temporarily softened by acid, so brushing straight away may be harsh on the tooth surface.
Can a dentist treat acid erosion?
A dentist can assess the pattern and severity of tooth wear, help reduce sensitivity, recommend prevention and restore damaged areas when appropriate. Frequent reflux should also be discussed with a GP.
Can reflux and grinding both affect teeth?
Yes. Reflux can contribute to acid erosion, while grinding can mechanically wear teeth. Some patients have both, so the dental assessment should look at acid wear, bite forces and grinding signs together.
Concerned about sensitivity or worn enamel?
If you have reflux, sensitivity or visible tooth wear, a dental assessment can help identify whether the wear pattern is stable, progressing or linked with acid exposure, grinding or other risk factors.
