EasyCare dental guides · Tooth wear
Non-carious lesions: a tooth wear guide
Worn edges, a groove near the gumline or new sensitivity can happen without a cavity. Learn what these changes may mean and how a dentist investigates them.
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The short answer: Non-carious tooth surface loss means wear or damage to a tooth that is not caused by a cavity. Acid erosion, tooth-to-tooth wear, brushing abrasion and other forces can contribute. More than one cause may be present, so the pattern needs an assessment before a treatment is chosen.
Recognise the pattern
What types of tooth wear are there?
Teeth may gradually lose surface even when there is no bacterial decay. The name describes the pattern, but it does not tell you the whole cause or whether treatment is needed.
Erosion
Acid can dissolve enamel over time. Frequent acidic drinks, dietary exposure or stomach acid from reflux can contribute. If reflux is a concern, see our guide to reflux and enamel erosion.
Attrition
Repeated tooth-to-tooth contact can flatten or shorten biting edges. Grinding or clenching may play a part; our teeth-grinding guide explains the signs and limits of a guard.
Abrasion
External friction, such as vigorous brushing, can contribute to wear around the gumline. Not every notch is caused by brushing alone, so it is worth checking the pattern.
Tooth wear often has several contributing factors. For example, acid exposure and grinding can occur together. A dentist can help distinguish them from tooth decay and cavities.
Changes you might notice
What does tooth surface loss look or feel like?
- Flattened, chipped, shorter or more translucent biting edges.
- Grooves or notches near the gums, or rough tooth surfaces.
- Sensitivity to cold, sweets or brushing, especially where dentine is exposed.
- Jaw tension or repeated small chips when clenching also occurs.
These changes can have other explanations, including gum recession, cracks or decay. Sensitivity alone cannot identify the cause. If a tooth suddenly breaks, becomes painful or develops swelling, seek a prompt dental assessment.
Finding the cause
How does a dentist assess tooth wear?
A dentist examines where the wear occurs, checks sensitivity and existing restorations, and asks about brushing, drinks, reflux, grinding and clenching. Photographs, X-rays or scans may be useful when clinically indicated, especially to compare changes over time. Some wear can be monitored; other cases need earlier protection or restoration.
What can I do while waiting for an appointment?
Use a soft toothbrush and fluoride toothpaste, brush gently and avoid frequent acidic drinks. After acidic drinks or vomiting, rinse with water and wait at least 30 minutes before brushing. If reflux is frequent, discuss it with your doctor as well as your dentist. These steps do not rebuild enamel that has already been lost.
For an assessment of tooth wear and sensitivity, a dentist can look at the full picture rather than treating a visible groove in isolation.
Care depends on the cause
Does every worn tooth need a filling or a crown?
No. Mild, stable wear may need advice and review rather than a restoration. Depending on the cause, care may focus on reducing acid exposure, changing brushing habits or protecting teeth affected by grinding. A custom night guard for grinding may protect tooth surfaces when appropriate, but it does not treat reflux or automatically stop clenching.
Some sensitive or damaged areas may be suitable for fillings or bonding for worn tooth surfaces. Significantly weakened teeth may need a different restoration, such as a dental crown. The choice depends on the amount of tooth remaining, symptoms, bite forces and the likely cause of ongoing wear.
Common questions
Questions about non-carious lesions
Are non-carious lesions the same as cavities?
No. A cavity involves decay driven by bacteria and plaque acids. Non-carious wear is tooth surface loss from causes such as erosion or friction. Both can affect the same tooth, so an examination matters.
Can tooth wear get worse over time?
Yes. Some patterns progress while others remain stable. Comparing photographs or scans over time can help your dentist decide whether monitoring or treatment is appropriate.
Can grinding damage teeth during sleep?
It can contribute to flattened edges, chips and damage to restorations, but a worn tooth does not prove that you grind at night. See our grinding guide if you also have jaw symptoms.
Can acidic drinks wear enamel?
Frequent acid exposure can contribute to erosion. Reflux is another possible source of acid. The amount and frequency of exposure matter, along with other factors.
When should I book an assessment?
Arrange a check if you notice new sensitivity, grooves, worn edges or repeated chips. Ask for prompt advice if a tooth breaks, pain worsens or swelling appears.
Further reading: healthdirect on dental erosion. This guide does not diagnose an individual tooth or replace an examination.
