SIST EN ISO 22674:2022
(Main)Dentistry - Metallic materials for fixed and removable restorations and appliances (ISO 22674:2022)
Dentistry - Metallic materials for fixed and removable restorations and appliances (ISO 22674:2022)
This document specifies requirements and test methods for metallic materials that are suitable for the
fabrication of dental restorations and appliances. Included are metallic materials recommended for use
either with or without a ceramic veneer, or recommended for both uses. Furthermore, this document
specifies requirements for packaging and marking of the products and for the instructions for use of
these materials, including products delivered for sale to a third party.
This document does not apply to alloys for dental amalgam (see ISO 24234), dental brazing materials
(see ISO 9333), or metallic materials for orthodontic appliances (e.g. wires, brackets, bands and screws).
This document is not applicable to magnetic attachment, which are specified in ISO 13017.
Zahnheilkunde - Metallische Werkstoffe für festsitzenden und herausnehmbaren Zahnersatz und Applikationen (ISO 22674:2022)
Dieses Dokument legt die Anforderungen und Prüfverfahren für metallische Werkstoffe fest, die zur Herstellung von dentalen Restaurationen und Applikationen geeignet sind. Dieses Dokument umfasst metallische Werkstoffe, die entweder für die Verwendung mit oder ohne Keramikverblendung oder für beide Anwendungen empfohlen werden. Darüber hinaus werden in diesem Dokument Anforderungen an die Verpackung und Kennzeichnung der Produkte sowie an die Gebrauchsanweisung für diese Werkstoffe, einschließlich Produkte, die für einen Verkauf an Dritte ausgeliefert werden, festgelegt.
Dieses Dokument gilt nicht für Legierungen für dentale Amalgame (siehe ISO 24234), dentale Hartlote (siehe ISO 9333) oder für metallische Werkstoffe für kieferorthopädische Apparaturen (z.B. Drähte, Brackets, Bänder und Schrauben).
Dieses Dokument gilt nicht für magnetische Befestigungen, die in ISO 13017 festgelegt sind.
Médecine bucco-dentaire - Matériaux métalliques pour les restaurations fixes et amovibles et les appareillages (ISO 22674:2022)
Le présent document spécifie les exigences et les méthodes d’essai pour les matériaux métalliques qui sont appropriés à la fabrication de restaurations dentaires et d’appareils. Sont inclus les matériaux métalliques d’utilisation recommandée avec ou sans revêtement céramique, ou indifféremment pour ces deux utilisations. De plus, le présent document spécifie les exigences relatives au conditionnement et au marquage des produits et aux instructions d’utilisation de ces matériaux, y compris les produits commercialisés à des tiers.
Le présent document ne s’applique pas aux alliages pour amalgame dentaire (voir l’ISO 24234), aux produits pour brasage dentaire (voir l’ISO 9333), ni aux matériaux métalliques destinés aux appareils orthodontiques (par exemple fils métalliques, supports, bagues et vis).
Le présent document n’est pas applicable aux attaches magnétiques spécifiées dans l’ISO 13017.
Zobozdravstvo - Kovinski materiali za stalne in zamenljive zobne obnove in orodja (ISO 22674:2022)
Ta dokument določa zahteve in preskusne metode za kovinske materiale, ki so primerni za izdelavo zobnih obnov in orodij. Vključeni so kovinski materiali, ki se priporočajo za uporabo s keramičnimi luskami ali brez njih oziroma za obe vrsti uporabe. Ta dokument določa tudi zahteve za embalažo in označevanje izdelkov ter za navodila za uporabo teh materialov, vključno z izdelki, ki so dobavljeni za prodajo tretjim osebam. Ta dokument se ne uporablja za zlitine zobnega amalgama (glej standard ISO 24234), dentalne materiale za spajkanje (glej standard ISO 9333) ali kovinske materiale za ortodontske aparate (npr. žice, opornike, trakove in vijake). Ta dokument se ne uporablja za magnetne priključke, ki so obravnavani v standardu ISO 13017.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 22674:2022
01-november-2022
Nadomešča:
SIST EN ISO 22674:2016
Zobozdravstvo - Kovinski materiali za stalne in zamenljive zobne obnove in orodja
(ISO 22674:2022)
Dentistry - Metallic materials for fixed and removable restorations and appliances (ISO
22674:2022)
Zahnheilkunde - Metallische Werkstoffe für festsitzenden und herausnehmbaren
Zahnersatz und Applikationen (ISO 22674:2022)
Médecine bucco-dentaire - Matériaux métalliques pour les restaurations fixes et
amovibles et les appareillages (ISO 22674:2022)
Ta slovenski standard je istoveten z: EN ISO 22674:2022
ICS:
11.060.10 Zobotehnični materiali Dental materials
SIST EN ISO 22674:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 22674:2022
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SIST EN ISO 22674:2022
EN ISO 22674
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2022
EUROPÄISCHE NORM
ICS 11.060.10 Supersedes EN ISO 22674:2016
English Version
Dentistry - Metallic materials for fixed and removable
restorations and appliances (ISO 22674:2022)
Médecine bucco-dentaire - Matériaux métalliques pour Zahnheilkunde - Metallische Werkstoffe für
les restaurations fixes et amovibles et les appareillages festsitzenden und herausnehmbaren Zahnersatz und
(ISO 22674:2022) Applikationen (ISO 22674:2022)
This European Standard was approved by CEN on 26 August 2022.
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, Türkiye 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 22674:2022 E
worldwide for CEN national Members.
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SIST EN ISO 22674:2022
EN ISO 22674:2022 (E)
Contents Page
European foreword . 3
2
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SIST EN ISO 22674:2022
EN ISO 22674:2022 (E)
European foreword
This document (EN ISO 22674:2022) 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 March 2023, and conflicting national standards shall
be withdrawn at the latest by March 2023.
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 22674:2016.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 22674:2022 has been approved by CEN as EN ISO 22674:2022 without any modification.
3
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SIST EN ISO 22674:2022
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SIST EN ISO 22674:2022
INTERNATIONAL ISO
STANDARD 22674
Third edition
2022-08
Dentistry — Metallic materials for
fixed and removable restorations and
appliances
Médecine bucco-dentaire — Matériaux métalliques pour les
restaurations fixes et amovibles et les appareils
Reference number
ISO 22674:2022(E)
© ISO 2022
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SIST EN ISO 22674:2022
ISO 22674:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022
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 on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
© ISO 2022 – All rights reserved
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SIST EN ISO 22674:2022
ISO 22674:2022(E)
Contents Page
Foreword .v
Introduction . vi
1 S c op e . 1
2 N ormative references . 1
3 T erms and definitions . 1
4 S ymbols and classification . 3
4.1 Symbols . 3
4.2 Classification . 5
5 R equirements . 6
5.1 C hemical composition . 6
5.1.1 R eported composition . 6
5.1.2 Permitted deviation from the reported composition for elements . 6
5.2 Ha zardous elements . 7
5.2.1 Ha zardous elements . 7
5.2.2 L imits for the hazardous elements . 7
5 . 2 . 3 Nic k el . 7
5.3 B iocompatibility . 7
5.4 M echanical properties . 7
5.4.1 G eneral . 7
5.4.2 P roof stress of 0,2 % non-proportional extension . 8
5.4.3 Elongation after fracture . 9
5.5 Elastic modulus . 10
5.5.1 Precision of measurement method . 10
5.5.2 D etermination of compliance with the requirements for Type 5 materials . 10
5.5.3 Mean value . 10
5.6 D ensity . 10
5.7 C orrosion resistance for material integrity . 10
5.8 T arnish resistance . 10
5.9 S olidus and liquidus temperatures (alloy) or melting point (commercially pure
metal) . . 11
5.10 T hermal expansion coefficient . . 11
5.11 I nformation, instructions and marking . 11
6 S a mpl i n g .11
7 P reparation of specimen .11
7.1 G eneral . 11
7.2 H eat treatment.12
7.2.1 G eneral conditions .12
7.2.2 M etallic materials for which a heat treatment is recommended in the
instructions for use .12
7.2.3 Metallic material for metal-ceramic restorations .12
7.2.4 M etallic materials for which no heat-treatment is recommended in the
instructions for use .12
7.3 P roof stress of 0,2 % non-proportional extension and the elongation after
fracture: Metallic materials for which production of conventional specimens is
possible . .12
7.4 Type 0 metallic materials for which the production of conventional specimens is
not possible .13
7.5 E lastic moduli . 13
7.5.1 G eneral .13
7.5.2 T ensile strain method . 14
7.5.3 Flexure method (three or four point bending) . 14
7.5.4 A coustic resonance method . 15
iii
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SIST EN ISO 22674:2022
ISO 22674:2022(E)
7.6 D ensity measurement .15
7.6.1 S olid material . 15
7.6.2 Powder material. 16
7.7 Corrosion resistance . 16
7.8 T arnish resistance and colour . 16
7.9 L inear thermal expansion . 16
8 M easurement and test methods .16
8.1 I nformation, instructions and marking . 16
8.2 Chemical composition . 16
8.3 M echanical testing . 17
8.3.1 Apparatus . 17
8 . 3 . 2 Te s t pr o c e du r e. 17
8.3.3 P roof stress of 0,2 % non-proportional extension . 17
8.3.4 Percentage elongation after fracture . 18
8.4 E lastic modulus measurement . 18
8.4.1 Tensile strain method . 18
8.4.2 Flexure method in three- or four-point bending mode . 19
8.4.3 Acoustic resonance method . 21
8.5 C alculation of elasticity parameters from acoustic measurement .23
8.5.1 General .23
8.5.2 Elastic modulus .23
8.5.3 Shear modulus . 23
8.5.4 Poisson's ratio . 24
8.6 D ensity . 24
8.6.1 Preparation of specimen . 24
8.6.2 Reagents . 24
8.6.3 Apparatus . 24
8.6.4 P rocedure . 24
8.7 C orrosion resistance by the static 7 d immersion procedure of ISO 10271 . 24
8.7.1 P reparation of specimen . 24
8.7.2 Reagents . 24
8.7.3 Apparatus . 24
8 .7.4 Te s t s olut ion . 25
8 .7. 5 Te s t pr o c e du r e.25
8.7.6 A nalysis . 25
8.7.7 T reatment of data . 25
8.8 S ulfide tarnish test — Cyclic immersion . 25
8.9 S ulfide tarnish test — Static immersion . 25
8.10 S olidus and liquidus temperatures (dental casting alloys) or melting point
(commercially pure metals) . 25
8.10.1 Cooling curve method .25
8.10.2 Thermal analysis method . 26
8.11 L inear thermal expansion . 27
9 Te s t r ep or t .27
10 I nformation and instructions for use .28
10.1 I nformation . .28
10.2 Processing instructions .29
10.3 M arking and labelling . 29
10.4 L abelling of the package . 29
Annex A (informative) Tensile testing of a non-cast Type 0 metallic material that is
intended for use in a thickness between 0,1 mm and 0,5 mm .31
Annex B (normative) Calculation of uncertainty for elasticity measurement .34
Annex C (informative) Measurement of Poisson's ratio .38
Bibliography .40
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SIST EN ISO 22674:2022
ISO 22674:2022(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.
This document was prepared by Technical Committee ISO/TC 106, Dentistry, Subcommittee SC 2,
Prosthodontic 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).
This third edition cancels and replaces the second edition (ISO 22674:2016), which has been technically
revised.
The main changes are as follows:
— addition of products produced using additive and subtractive manufacturing;
— revision of definitions and addition of new definitions for modern manufacturing techniques;
— addition of an overview of symbols in Clause 4 as Table 1;
— harmonization of symbols in formulae and Figures;
— static determination of elastic modulus was added in 8.4.1.3 (as an additional option);
— a requirement for a test report was added as Clause 9;
— a requirement for labelling the alloy composition on the package was added in 10.4.
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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SIST EN ISO 22674:2022
ISO 22674:2022(E)
Introduction
Specific qualitative and quantitative requirements for freedom from biological hazard are not included
in this document, but it is recommended that, in assessing possible biological hazards, reference be
made to ISO 10993-1 and ISO 7405.
Requirements for the performance of metals and alloys used for the metallic component of a metal-
ceramic restoration contained in this document supersede such requirements formerly contained in
ISO 9693. The requirements for the performance of ceramic material and the metal-ceramic bond in
metal-ceramic restorative systems are specified in ISO 9693.
Requirements for the proof stress and minimum elongation after fracture for Type 0 metallic materials
are not included in this document, but it is recommended to adopt the test procedure given in Annex A
when measuring these properties.
vi
© ISO 2022 – All rights reserved
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SIST EN ISO 22674:2022
INTERNATIONAL STANDARD ISO 22674:2022(E)
Dentistry — Metallic materials for fixed and removable
restorations and appliances
1 S cope
This document specifies requirements and test methods for metallic materials that are suitable for the
fabrication of dental restorations and appliances. Included are metallic materials recommended for use
either with or without a ceramic veneer, or recommended for both uses. Furthermor
...
SLOVENSKI STANDARD
oSIST prEN ISO 22674:2021
01-september-2021
Zobozdravstvo - Kovinski materiali za stalne in zamenljive zobne obnove in orodja
(ISO/DIS 22674:2021)
Dentistry - Metallic materials for fixed and removable restorations and appliances
(ISO/DIS 22674:2021)
Zahnheilkunde - Metallische Werkstoffe für festsitzenden und herausnehmbaren
Zahnersatz und Applikationen (ISO/DIS 22674:2021)
Médecine bucco-dentaire - Matériaux métalliques pour les restaurations fixes et
amovibles et les appareillages (ISO/DIS 22674:2021)
Ta slovenski standard je istoveten z: prEN ISO 22674
ICS:
11.060.10 Zobotehnični materiali Dental materials
oSIST prEN ISO 22674:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 22674:2021
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oSIST prEN ISO 22674:2021
DRAFT INTERNATIONAL STANDARD
ISO/DIS 22674
ISO/TC 106/SC 2 Secretariat: ANSI
Voting begins on: Voting terminates on:
2021-07-12 2021-10-04
Dentistry — Metallic materials for fixed and removable
restorations and appliances
Médecine bucco-dentaire — Matériaux métalliques pour les restaurations fixes et amovibles et les
appareillages
ICS: 11.060.10
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 22674:2021(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2021
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oSIST prEN ISO 22674:2021
ISO/DIS 22674:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
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
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
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oSIST prEN ISO 22674:2021
ISO/DIS 22674:2021(E)
Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and classification . 3
4.1 Symbols . 3
4.2 Classification . 5
5 Requirements . 6
5.1 Chemical composition . 6
5.1.1 Reported composition . 6
5.1.2 Permitted deviation from the reported composition for elements . 6
5.2 Hazardous elements . 6
5.2.1 Hazardous elements . 6
5.2.2 Limits for the hazardous elements . 6
5.2.3 Nickel . 7
5.3 Biocompatibility . 7
5.4 Mechanical properties . 7
5.4.1 General. 7
5.4.2 Proof stress of 0,2 % non-proportional extension . 8
5.4.3 Elongation after fracture . 8
5.5 Elastic modulus . 9
5.5.1 Precision of measurement method . 9
5.5.2 Determination of compliance with the requirements for Type 5 materials. 9
5.5.3 Mean value .10
5.6 Density .10
5.7 Corrosion resistance for material integrity .10
5.8 Tarnish resistance .10
5.9 Solidus and liquidus temperatures (alloy) or melting point (commercially pure metal) .10
5.10 Thermal expansion coefficient .10
5.11 Information, instructions and marking .11
6 Sampling .11
7 Preparation of test specimens .11
7.1 General .11
7.2 Heat treatment .11
7.2.1 General conditions .11
7.2.2 Metallic materials for which a heat treatment is recommended in the
instructions for use .11
7.2.3 Metallic material for metal-ceramic restorations .11
7.2.4 Metallic materials for which no heat-treatment is recommended in the
instructions for use .12
7.3 Proof stress of 0,2 % non-proportional extension and the elongation after fracture:
Metallic materials for which production of conventional specimens is possible .12
7.4 Type 0 metallic materials for which the production of conventional specimens is
not possible .13
7.5 Elastic moduli .13
7.5.1 General.13
7.5.2 Tensile strain method .13
7.5.3 Flexure method (three or four point bending) .14
7.5.4 Acoustic resonance method .14
7.6 Density measurement .15
7.6.1 Solid material .15
© ISO 2021 – All rights reserved iii
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oSIST prEN ISO 22674:2021
ISO/DIS 22674:2021(E)
7.6.2 Powder material .15
7.7 Corrosion resistance .15
7.8 Tarnish resistance and colour .16
7.9 Linear thermal expansion .16
8 Measurement and test methods .16
8.1 Information, instructions and marking .16
8.2 Chemical composition .16
8.3 Mechanical testing .16
8.3.1 Apparatus .16
8.3.2 Test procedure .17
8.4 Proof stress of 0,2 % non-proportional extension .17
8.4.1 Calculation .17
8.4.2 Mean value .17
8.5 Percentage elongation after fracture .17
8.5.1 Calculation .17
8.5.2 Mean value .18
8.6 Elastic modulus measurement .18
8.6.1 Tensile strain method .18
8.6.2 Flexure method in three- or four-point bending mode .19
8.6.3 Acoustic resonance method .21
8.7 Calculation of elasticity parameters from acoustic measurement .22
8.7.1 General.22
8.7.2 Elastic modulus .22
8.7.3 Shear modulus .23
8.7.4 Poisson ratio .23
8.8 Density .23
8.8.1 Preparation of test specimens .23
8.8.2 Reagents .23
8.8.3 Apparatus .24
8.8.4 Procedure .24
8.9 Corrosion resistance by the static immersion procedure of ISO 10271:2020 .24
8.9.1 Preparation of test specimens .24
8.9.2 Reagents .24
8.9.3 Apparatus .24
8.9.4 Test solution.24
8.9.5 Test procedure .24
8.9.6 Analysis .24
8.9.7 Treatment of data .25
8.10 Sulfide tarnish test (cyclic immersion) .25
8.11 Sulfide tarnish test (static immersion) .25
8.12 Solidus and liquidus temperatures (dental casting alloys) or melting point
(commercially pure metals) .25
8.12.1 Cooling curve method.25
8.12.2 Thermal analysis method .26
8.13 Linear thermal expansion .26
9 Test report .27
10 Information and instructions for use .27
10.1 Information .27
10.2 Processing instructions .28
10.3 Marking and labelling .28
10.4 Marking .28
10.5 Labelling of the package .29
Annex A (informative) Tensile testing of a non-cast Type 0 metallic material that is
intended for use in a thickness between 0,1 mm and 0,5 mm .30
Annex B (normative) Calculation of uncertainty for elasticity measurement .33
iv © ISO 2021 – All rights reserved
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oSIST prEN ISO 22674:2021
ISO/DIS 22674:2021(E)
Annex C (informative) Measurement of Poisson ratio .38
Bibliography .40
© ISO 2021 – All rights reserved v
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oSIST prEN ISO 22674:2021
ISO/DIS 22674:2021(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.
This document was prepared by Technical Committee ISO/TC 106, Dentistry, Subcommittee SC 2,
Prosthodontic materials.
This third edition cancels and replaces the second edition (ISO 22674:2016), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— addition of products produced using additive and subtractive manufacturing;
— revision of definitions and addition of new definitions for modern manufacturing techniques;
— addition of overview of symbols in Clause 4 as Table 1;
— static determination of elastic modulus was added in 8.6.1.3 (as additional option);
— requirement for test report was added as Clause 9;
— harmonization of symbols in formulas.
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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oSIST prEN ISO 22674:2021
ISO/DIS 22674:2021(E)
Introduction
Specific qualitative and quantitative requirements for freedom from biological hazard are not included
in this document, but it is recommended that, in assessing possible biological hazards, reference has to
be made to ISO 10993-1 and ISO 7405.
Requirements for the performance of metals and alloys used for the metallic component of a metal-
ceramic restoration contained in this document supersede such requirements formerly contained in
ISO 9693. The requirements for the performance of ceramic material and the metal-ceramic bond in
metal-ceramic restorative systems continue to be specified in ISO 9693.
Requirements for the proof stress and minimum elongation after fracture for Type 0 metallic materials
are not included in this document, but it is recommended to adopt the test procedure given in Annex A
when measuring these properties.
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oSIST prEN ISO 22674:2021
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oSIST prEN ISO 22674:2021
DRAFT INTERNATIONAL STANDARD ISO/DIS 22674:2021(E)
Dentistry — Metallic materials for fixed and removable
restorations and appliances
1 Scope
This document specifies requirements and test methods for metallic materials that are suitable for the
fabrication of dental restorations and appliances. Included are metallic materials recommended for
use either with or without a ceramic veneer, or recommended for both uses. Furthermore, it specifies
requirements with respect to packaging and marking of the products and to the instructions for use of
these materials, including products delivered for sale to a third party.
This document also applies to products, which were produced using additive and subtractive
manufacturing.
This document does not apply to alloys for dental amalgam (ISO 24234), dental brazing materials
(ISO 9333), or metallic materials for orthodontic appliances (ISO 15841) (e.g. wires, brackets, bands
and screws).
This document is not applicable to magnetic attachment, which are specified in ISO 13017.
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 3696, Water for analytical laboratory use — Specification and test methods
ISO 5832-2, Implants for surgery — Metallic materials — Part 2: Unalloyed titanium
ISO 5832-3, Implants for surgery — Metallic materials — Part 3: Wrought titanium 6-aluminium
4-vanadium alloy
ISO 6344-1, Coated abrasives — Grain size analysis — Part 1: Grain size distribution test
ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 9513, Metallic materials — Calibration of extensometer systems used in uniaxial testing
ISO 9693, Dentistry — Compatibility testing for metal-ceramic and ceramic-ceramic systems
ISO 10271:2020, Dentistry — Corrosion test methods for metallic materials
ISO 12781-1, Geometrical product specifications (GPS) — Flatness — Part 1: Vocabulary and parameters of
flatness
ISO 15223-1:2021, Medical devices — Symbols to be used with medical device labels, labelling and
information to be supplied — Part 1: General requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 1942 and the following apply.
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oSIST prEN ISO 22674:2021
ISO/DIS 22674:2021(E)
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
additive manufacturing
all manufacturing processes where the final object is build up layer-wise such as selective laser melting,
SLM
3.2
appliance
prefabricated metallic devices such as attachments, bars
3.3
as-cast state
metallurgical condition of the metallic material (3.15) in its solid state when removed from the casting
machine
Note 1 to entry: This condition is
...
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