What is dental erosion?
An acid attack on tooth structure in which the acid does not come from bacterial biofilm.
← All explanationsDental erosion
How can acids wear away tooth structure?
Dental erosion occurs when acids not produced by bacteria dissolve tooth structure. These acids may come from drinks or the stomach, for example. Continued exposure can contribute to permanent tissue loss.
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Acid acts directly on the tooth
Erosion begins with acids that do not come from bacterial deposits. Repeated contact can soften the tooth surface and contribute to loss of tooth structure.
Acid can come from different sources
Acidic drinks and foods are possible sources. Stomach acid from reflux or repeated vomiting can also affect teeth. Frequency and contact time play a part.
Identify the cause and protect tooth structure
An examination assesses the surface and possible causes. Lost tooth shape does not grow back. Protection, care and any necessary restoration are planned accordingly.
At a glance
Where can the acid come from?
For example, from acidic drinks, foods or the stomach.
Why does the cause matter?
It helps determine how further loss of tooth structure can be limited.
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Often confused
Erosion or decay?
Both can damage tooth structure. The difference is the source of the acid: bacterial biofilm in decay, and sources outside that process in erosion.
Quick answers
Can sugar-free drinks contribute to erosion?
Yes. Sugar-free does not mean acid-free. Acid contact is the key factor in erosion.
Is dental erosion the same as tooth decay?
No. In decay, bacteria in the biofilm produce the acids that attack the tooth. Erosion involves acids from other sources.
Can stomach acid be involved?
Yes, for example with reflux or repeated vomiting. Signs of this should be assessed by a dentist and, if needed, a doctor.
At the practice
For your consultation
A question to discuss with Dr. med. dent. Niusha Barahmand Pour:
Are there signs of acid exposure, and which possible sources should we discuss?
The practice combines preservation of natural tooth structure with planning that considers both function and appearance.
Changes to tooth surfaces and possible sources of acid can be assessed together at an appointment.
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Build on the simple explanation with clinical terms, key distinctions and a knowledge question.
- Erosive tooth wear
- Loss of tooth structure associated with acid exposure and mechanical forces.
- Extrinsic acid
- Acid from an external source, such as a drink.
- Intrinsic acid
- Acid produced within the body that reaches the mouth, particularly stomach acid.
Know the difference
Erosion is not bacterial tooth decay. Mechanical forces can increase the loss of a surface that has been altered by acid.
Sources for further learning
Sources and context
Editorial research: 23 October 2026. This explanation covers general principles and does not replace a personal examination. Suitable treatment is discussed following individual assessment.