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RS ISO 20127: 2025
Dentistry — Physical properties of powered toothbrushes

Abstract

This document specifies requirements and test methods for the physical properties of powered toothbrushes
in order to promote the safety of these products for their intended use.
There are different technologies of powered toothbrushes. Common features of those powered toothbrushes
to which this document applies are:
— a battery;
— a motor;
— a mechanical or magnetic drive system;
— a moving brush head with tufted filaments.
Powered toothbrushes can have a moving brush head with different motions (e.g. oscillating-rotating, sideby-
side), frequencies and velocities.
These types of electric toothbrushes are tested for safety in use by means of appropriate test procedures or
clinical studies
The requirements listed in this document apply to all types of powered toothbrushes. However, there is a
possibility that some requirements are not applicable for all types. For example, brush head plate retention
can only be applied if the brush has a head portion that can detach from the brush shaft. In addition, for the
filaments end-rounding requirements, this document does not apply to filament types that are very thin (less
than 0,1 mm outside diameter) or have no sharp edges (e.g. tapered, feathered, with split tips or spherical
cap) or non-synthetic filaments, where applying the end-rounding process is inappropriate or impossible.
This document is not applicable to other types of powered oral hygiene devices (such as powered interdental
brushes) or manual toothbrushes.

General Information

Code	Classification	Theme	Pages	Publisher	Availability
RS ISO 20127: 2025	ADOPTED ISO STANDARDS	Chemical technology	27	Third Edition Jul 2026	Available