Tooth erosion is one of the most common conditions, yet one of the least recognized. It doesn't cause immediate pain, doesn't appear with dark spots like cavities , and is often noticed only when teeth begin to become more sensitive , transparent, or brittle.
Unlike tooth decay—where bacteria produce acids that attack the enamel—erosion is a direct chemical process , caused by acids from food or the stomach. Over time, these acids dissolve the enamel's minerals, thinning it until the dentin is exposed. Lost enamel cannot grow back, which is why recognizing dental erosion in its early stages is crucial.
In this article, we clearly and scientifically analyze the causes, signs, prevention, and treatments of tooth erosion.
What is dental erosion?
Dental erosion is the progressive loss of enamel due to the action of acidic substances not produced by bacteria. It is therefore different from:
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caries: caused by bacterial action
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abrasion: mechanical wear from excessive brushing
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friction/bruxism : rubbing between teeth, especially at night
During erosion, acids dissolve the enamel's minerals, making it thinner and more vulnerable. If the process continues, the dentin—the softer and more sensitive layer beneath the enamel—is exposed, causing pain and a greater risk of chipping.
Causes of tooth erosion
Erosion can be caused by one or more factors. Knowing them helps prevent it and slow its progression.
1. Acidic foods and drinks
This is the most common cause. Acids in foods and drinks can gradually dissolve the enamel.
The main culprits are:
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citrus fruits and citrus juices
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carbonated drinks, even “zero sugar” ones
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energy drink
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kombucha and fermented drinks
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white wine
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vinegar and acidic condiments
The greatest risk is not the quantity, but the frequency : sipping acidic drinks throughout the day means exposing the enamel to continuous stress.
2. Gastroesophageal reflux
Stomach acids have a much lower pH than food: when they rise into the mouth, the erosive action is rapid and aggressive.
Chronic reflux can cause damage especially to:
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the inside of the front teeth
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the chewing surfaces of the molars
In the most severe cases, erosion due to reflux can progress over a few years.
3. Aggressive brushing
Brushing too hard or with hard bristles does not cause erosion, but it can accelerate it , especially if it occurs immediately after consuming acidic foods.
In fact, the enamel remains “softer” for 20–30 minutes after exposure to acids.
4. Bruxism
Bruxism does not cause erosion, but it greatly amplifies the damage when the enamel is already weakened.
Typical results:
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worn teeth
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serrated edges
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microfractures of the enamel
5. Enamel disorders in children
In pediatric age, erosion can be more rapid due to:
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enamel hypoplasia
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MIH (molar-incisor hypomineralization)
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naturally thinner enamel in baby teeth
Teeth become more vulnerable to acids and wear.
Symptoms of tooth erosion
Erosion doesn't manifest with sudden signs. It progresses slowly, but produces very specific symptoms.
1. Tooth sensitivity
The first sign is almost always sensitivity to cold, heat, or sweet foods.
As the enamel thins, the dentin — rich in nerve endings — is exposed.
2. Transparent teeth
The edges of the incisors may become semi-transparent. This is one of the most reliable indicators of erosion.
3. Change in the shape of the teeth
Lost enamel changes the morphology:
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more rounded edges
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smoother front surfaces
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teeth that appear “flat”
4. Chipping nail polish
Loose fragments, frequent chipping, surface cracks: these are all signs of weakened enamel.
5. Shorter or worn teeth
Excessive wear can make teeth appear shorter or uneven.
6. Small “craters” on the surface of the molars
They are typical of acid food erosion.
Dental Erosion: When to Worry
A dental check-up is recommended when the following appear:
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increasing sensitivity
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transparent or more yellow teeth
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teeth that chip easily
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smooth, shiny surfaces, like “glass”
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change in the shape or length of the teeth
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pain when chewing
The earlier you intervene, the better your chances of protecting the remaining enamel.
How to prevent enamel erosion
Prevention is the most effective strategy, because lost enamel cannot be rebuilt.
The most useful habits are:
1. Limit the frequency of acidic foods
It is better to consume them during meals and not continuously throughout the day.
2. Drink water after acidic foods and drinks
It reduces residual acidity and helps saliva buffer the pH.
3. Don't brush immediately after eating something acidic
Wait at least 20–30 minutes.
4. Use fluoride toothpastes
Fluoride strengthens enamel and aids natural remineralization processes.
5. Brush with a gentle technique
Soft bristles and light movements.
6. Manage any gastroesophageal reflux
Untreated reflux is a major cause of severe erosion.
7. Control bruxism
Weak enamel worn away by bruxism deteriorates rapidly.
FAQ on Dental Erosion
Can nail polish grow back?
No. Lost enamel doesn't come back. You can only strengthen the remaining enamel.
Why do teeth become transparent?
Because the enamel thins, revealing the dentin.
Is demineralization reversible?
Yes, in the early stages. With fluoride and specific products.
Do crumbling teeth indicate erosion?
Often yes, especially in combination with bruxism.
What to do if a tooth chips?
Avoid DIY remedies and consult your dentist.
Conclusion
Dental erosion is a silent but progressive process that can compromise the aesthetics and functionality of teeth. Early detection—teeth that are more sensitive, transparent, with smooth surfaces and chipping—allows timely intervention and protection of the remaining enamel.
Prevention remains the most effective weapon: good habits, attention to the acidity of foods, and regular dental checkups are essential for maintaining a healthy smile over time.
