Purpose?
Support mechanical surface cleaning.
← All explanationsAbrasives in toothpaste
Why does toothpaste contain abrasives?
Abrasives are cleaning particles that support mechanical cleaning of tooth surfaces. Examples include certain silicas and calcium carbonate. They can help remove external stains. A toothpaste’s abrasivity cannot be established from one ingredient name alone.
For training & practice ↓
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Cleaning the surface
During brushing, particles work together with the brush and toothpaste formulation to remove deposits and external staining. They do not rebuild lost enamel.
Interpret the laboratory value
RDA describes relative dentine abrasivity under standardised test conditions. It is not a percentage of enamel loss or a simple ranking of clinical safety.
Match the individual situation
With exposed roots or marked wear, toothpaste, brushing pressure and technique should be considered together. Acids may also be important. Fluoride protection remains a separate selection criterion.
Read the full explanation
Cleaning the surface
During brushing, particles work together with the brush and toothpaste formulation to remove deposits and external staining. They do not rebuild lost enamel.
Interpret the laboratory value
RDA describes relative dentine abrasivity under standardised test conditions. It is not a percentage of enamel loss or a simple ranking of clinical safety.
Match the individual situation
With exposed roots or marked wear, toothpaste, brushing pressure and technique should be considered together. Acids may also be important. Fluoride protection remains a separate selection criterion.
Notes on the teaching images
- Toothpaste context · formulation not depicted
- No RDA value can be read from the image
- No product or portion recommendation
At a glance
Ingredient name enough?
No; the entire formulation matters.
If teeth show wear?
Review toothpaste, brushing and other causes together.
Knowledge in motion
Explained in 36 seconds.
Three steps. No audio.
Each scene can also be selected manually.
Silent educational film with German on-screen text and simplified teaching images. Not a patient case or a promised treatment outcome. The full English explanation is available as text.
Often confused
Abrasion or bleaching?
Abrasives clean surfaces mechanically. Bleaching changes pigments chemically. Removing external stain does not necessarily lighten the internal tooth colour.
Quick answers
Are abrasives inherently harmful?
No. They are part of many toothpastes. The full formulation, how it is used and the existing tooth surfaces determine the assessment.
Does scrubbing harder whiten teeth?
More pressure is not a useful strategy. External deposits and natural tooth colour are different; aggressive brushing can burden tissues and tooth surfaces.
Is fluoride-free toothpaste better because of abrasion?
Fluoride content and abrasivity are different properties. Choosing cleaning particles should not unintentionally discard protection against decay.
At the practice
For the appointment
You can bring this question to your appointment:
Which toothpaste and brushing technique suit my tooth surfaces and decay risk?
Discuss your individual findings and whether a referral is appropriate.
Discuss your findingsAppointment selection at DoctolibLearning layer for training & practiceUnderstand terminology and deepen knowledge
- Abrasivity
- Wear-producing action under specified friction and test conditions.
- Dentine
- Tooth tissue beneath enamel or at exposed root surfaces.
Make the distinction
Abrasives clean surfaces mechanically. Bleaching changes pigments chemically. Removing external stain does not necessarily lighten the internal tooth colour.
Sources and context
Editorial research: . General information, not an individual diagnosis or treatment recommendation. Teaching illustrations are simplified and do not depict a patient case.