EN ISO 27020:2019

SLOVENSKI STANDARD
01-september-2019
Nadomešča:
SIST EN ISO 27020:2011
Zobozdravstvo - Nastavki in cevke za uporabo v ortodontiji (ISO 27020:2019)
Dentistry - Brackets and tubes for use in orthodontics (ISO 27020:2019)
Zahnheilkunde - Brackets und Röhrchen für die Kieferorthopädie (ISO 27020:2019)
Médecine bucco-dentaire - Consoles et tubes utilisés en orthodontie (ISO 27020:2019)
Ta slovenski standard je istoveten z: EN ISO 27020:2019
ICS:
11.060.20 Zobotehnična oprema Dental equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 27020
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2019
EUROPÄISCHE NORM
ICS 11.060.20 Supersedes EN ISO 27020:2010
English Version
Dentistry - Brackets and tubes for use in orthodontics (ISO
27020:2019)
Médecine bucco-dentaire - Consoles et tubes utilisés en Zahnheilkunde - Brackets und Röhrchen für die
orthodontie (ISO 27020:2019) Kieferorthopädie (ISO 27020:2019)
This European Standard was approved by CEN on 10 May 2019.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 27020:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 27020:2019) has been prepared by Technical Committee ISO/TC 106
"Dentistry" in collaboration with Technical Committee CEN/TC 55 “Dentistry” the secretariat of which
is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by January 2020, and conflicting national standards shall
be withdrawn at the latest by January 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 27020:2010.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 27020:2019 has been approved by CEN as EN ISO 27020:2019 without any modification.

INTERNATIONAL ISO
STANDARD 27020
Second edition
2019-06
Dentistry — Brackets and tubes for
use in orthodontics
Médecine bucco-dentaire — Consoles et tubes utilisés en orthodontie
Reference number
ISO 27020:2019(E)
©
ISO 2019
ISO 27020:2019(E)
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
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Published in Switzerland
ii © ISO 2019 – All rights reserved

ISO 27020:2019(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 3
4.1 Hazardous elements . 3
4.2 Dimensions and angles . 4
4.3 Release . 4
5 Test methods . 4
5.1 Dimensions . 4
5.1.1 Apparatus . 4
5.1.2 Measurement procedures . 4
5.2 Static immersion corrosion test method . 9
5.2.1 Apparatus . 9
5.2.2 Samples . 9
5.2.3 Test procedure .10
5.3 Treatment of results .10
6 Packaging and labelling information to be provided to the user .10
6.1 General requirements .10
6.2 Packaging .10
6.3 Labelling .10
Bibliography .12
ISO 27020:2019(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
ISO 27020 was prepared by Technical Committee ISO/TC 106, Dentistry, Subcommittee SC 1, Filling and
restorative materials.
This second edition cancels and replaces the first edition ISO 27020:2010, which has been technically
revised. The main changes compared to the previous edition are as follows:
— the inclusion of a new corrosion test.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2019 – All rights reserved

ISO 27020:2019(E)
Introduction
This document has been developed as a result of the difficulty often encountered by clinicians to make
meaningful comparisons between brackets and tubes using the information currently available from
manufacturers and suppliers.
INTERNATIONAL STANDARD ISO 27020:2019(E)
Dentistry — Brackets and tubes for use in orthodontics
1 Scope
This document specifies requirements and test methods to compare the functional dimensions of
orthodontic brackets and tubes and their chemical ion release, as well as packaging and labelling
information.
This document is applicable to brackets and tubes for use in fixed orthodontic appliances.
This document does not specify specific qualitative and quantitative requirements for freedom from
biological hazards; which are covered in ISO 10993-1 and ISO 7405.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1942, Dentistry — Vocabulary
ISO 10271:2011, Dentistry — Corrosion test methods for metallic materials
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 1942 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: av
...