EN ISO 23325:2020

SLOVENSKI STANDARD
01-september-2020
Zobozdravstvo - Odpornost zobnega amalgama proti koroziji (ISO 23325:2020)
Dentistry - Corrosion resistance of dental amalgam (ISO 23325:2020)
Zahnheilkunde - Korrosionsbeständigkeit von Dentalamalgam (ISO 23325:2020)
Médecine bucco-dentaire - Résistance à la corrosion des amalgames dentaire (ISO
23325:2020)
Ta slovenski standard je istoveten z: EN ISO 23325:2020
ICS:
11.060.10 Zobotehnični materiali Dental materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 23325
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2020
EUROPÄISCHE NORM
ICS 11.060.10
English Version
Dentistry - Corrosion resistance of dental amalgam (ISO
23325:2020)
Médecine bucco-dentaire - Résistance à la corrosion Zahnheilkunde - Korrosionsbeständigkeit von
des amalgames dentaires (ISO 23325:2020) Dentalamalgam (ISO 23325:2020)
This European Standard was approved by CEN on 9 June 2020.

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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 23325:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 23325:2020) 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 2021, and conflicting national standards shall
be withdrawn at the latest by January 2021.
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.
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 23325:2020 has been approved by CEN as EN ISO 23325:2020 without any modification.

INTERNATIONAL ISO
STANDARD 23325
First edition
2020-06
Dentistry — Corrosion resistance of
dental amalgam
Médecine bucco-dentaire — Résistance à la corrosion des amalgames
dentaires
Reference number
ISO 23325:2020(E)
©
ISO 2020
ISO 23325:2020(E)
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
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ISO 23325:2020(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Sampling . 3
5 Requirement . 3
6 Preparation of the dental amalgam test-piece . 4
6.1 General . 4
6.1.1 Temperature . 4
6.1.2 Mixing . 4
6.2 Apparatus for the preparation of the dental amalgam test-piece . 4
6.3 Materials and tolerances for construction of the mould . 4
6.4 Packing the mould, removal of test-piece and inspection for surface defects . 5
7 Test solution (artificial saliva) . 6
7.1 Reagents. 6
7.2 Stock solutions . 7
7.2.1 Stock Solution A . 7
7.2.2 Stock Solution B . 7
7.2.3 Stock Solution C . 7
7.3 Test solution . 7
8 Procedure for test-piece conditioning . 8
8.1 Apparatus . 8
8.2 Control test-pieces . 8
8.3 Corrosion test-pieces . 9
8.4 Replacement test-pieces . 9
9 Mechanical testing . 9
9.1 Apparatus for mechanical testing . 9
9.2 Procedure .10
9.2.1 Loading arrangement .10
9.2.2 Force application and fracture .11
9.3 Treatment of data .11
10 Test report .12
Bibliography .13
ISO 23325:2020(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
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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).
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iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 106, Dentistry, Subcommittee SC 1, Filling
and restorative materials, in collaboration with the European Committee for Standardization (CEN)
Technical Committee CEN/TC 55, Dentistry, in accordance with the Agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
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.
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