SIST EN ISO 9693:2026

• Abstract:

  This document specifies requirements and test methods to assess the thermomechanical compatibility between a veneering ceramic and a metallic or ceramic substructure material used for dental restorations.; This document applies only to the materials used in combination. Conformity cannot be claimed for a single material.; For requirements for ceramic materials, see ISO 6872. For requirements for metallic materials see ISO 22674.

• Status: Published
• Public Enquiry End Date: 30-Mar-2026
• Publication Date: 26-Aug-2026
• ICS: 11.060.10 - Dental materials
• Technical Committee: VAZ - Healthcare
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 14-Aug-2026
• Due Date: 19-Oct-2026
• Completion Date: 27-Aug-2026
• Ref Project: EN ISO 9693:2026 - Dentistry - Compatibility testing for metal-ceramic and ceramic-ceramic systems (ISO 9693:2026)

• Replaces: SIST EN ISO 9693:2020 - Dentistry - Compatibility testing for metal-ceramic and ceramic-ceramic systems (ISO 9693:2019)
• Effective Date: 01-Oct-2026
• Referred By: SIST EN 1641:2010 - Dentistry - Medical devices for dentistry - Materials
• Effective Date: 12-Aug-2026

Overview

SIST EN ISO 9693:2026 - "Dentistry – Compatibility testing for metal-ceramic and ceramic-ceramic systems (ISO 9693:2026)" - establishes internationally recognized requirements and test methods for evaluating the thermomechanical compatibility of veneering ceramics with metallic or ceramic substructure materials used in dental restorations. This standard ensures that when these materials are combined as part of dental prosthetics, such as crowns and bridges, they maintain optimal performance, durability, and patient safety under the challenging conditions present in the oral environment.

The standard is applicable solely to combinations of veneering ceramics and substructure materials in dental applications. It does not support claims of conformity for individual, uncombined materials. This ensures that only tested and proven material pairings are utilized in high-quality dental restorations.

Key Topics

SIST EN ISO 9693:2026 covers several essential aspects for compatibility testing in dental material systems:

• Scope and Definitions
  Clear terminology is provided to ensure consistency when discussing veneering ceramics, conditioning processes, and liners in dental systems.

• Material Requirements

  • Veneering ceramics must comply with ISO 6872.
  • Metallic substructures must comply with ISO 22674.
  • All materials in a test must be from the same batch.

• Thermomechanical Compatibility Testing

  • Thermal Expansion: Testing of linear coefficients to ascertain compatibility through consistent expansion rates during temperature changes.
  • De-bonding/Crack-initiation Strength: Assessment of the strength needed to initiate a failure at the interface, ensuring that veneering ceramics maintain a reliable bond to their substructure.
  • Thermal Shock Resistance: Verification of the combination’s durability under rapid and extreme temperature changes, simulating real oral conditions.

• Test Methods
  Procedures are described for sample preparation, mechanical testing (e.g., three-point bending), and thermocycling tests with both fixed and increasing temperature intervals. Detailed reporting requirements guarantee reproducibility and traceability of results.

Applications

ISO 9693:2026 is vital in several practical areas within restorative dentistry:

• Quality Assurance for Dental Laboratories and Manufacturers
  Dental material manufacturers and laboratories rely on this standard to ensure that their combined metallic/ceramic or ceramic/ceramic systems meet rigorous international criteria for performance and biocompatibility.

• Product Development and Material Approval
  The standard guides R&D teams in selecting and validating new material combinations for dental crowns, bridges, and other fixed prostheses.

• Regulatory Compliance and Market Access
  Compliance with ISO 9693:2026 is frequently a prerequisite for gaining regulatory approval and market acceptance in various countries.

• Dental Clinical Practice
  By using systems tested to this standard, dental professionals ensure the long-term function and safety of fixed prostheses, reducing the risk of material failure, cracking, or de-bonding in service.

Related Standards

For comprehensive product evaluation and compliance, the following standards are closely linked to ISO 9693:2026:

• ISO 6872 - Dentistry: Ceramic materials - Outlines requirements for dental ceramic materials.
• ISO 22674 - Dentistry: Metallic materials for fixed and removable restorations and appliances.
• ISO 7405 - Dentistry: Evaluation of biocompatibility of medical devices used in dentistry.
• ISO 10993-1 - Biological evaluation of medical devices - Principles for the evaluation of biological safety.
• ISO 3950 - Dentistry: Designation system for teeth and areas of the oral cavity.

By adhering to SIST EN ISO 9693:2026, the dental industry reinforces its commitment to safety, reliability, and high-quality dental care through standardized compatibility testing of material systems used in restorations.

SLOVENSKI STANDARD
01-oktober-2026
Nadomešča:
SIST EN ISO 9693:2020
Zobozdravstvo - Preskušanje združljivosti za kovinsko-keramične in keramično-
keramične sisteme (ISO 9693:2026)
Dentistry - Compatibility testing for metal-ceramic and ceramic-ceramic systems (ISO
9693:2026)
Zahnheilkunde - Kompatibilitätsprüfungen für metall-keramische und keramisch-
keramische Systeme (ISO 9693:2026)
Médecine bucco-dentaire - Essais de compatibilité pour systèmes métallo-céramiques et
céramo-céramiques (ISO 9693:2026)
Ta slovenski standard je istoveten z: EN ISO 9693:2026
ICS:
11.060.10 Zobotehnični materiali Dental materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 9693
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2026
EUROPÄISCHE NORM
ICS 11.060.10 Supersedes EN ISO 9693:2019
English Version
Dentistry - Compatibility testing for metal-ceramic and
ceramic-ceramic systems (ISO 9693:2026)
Médecine bucco-dentaire - Essais de compatibilité pour Zahnheilkunde - Kompatibilitätsprüfungen für metall-
systèmes métallo-céramiques et céramo-céramiques keramische und keramisch-keramische Systeme (ISO
(ISO 9693:2026) 9693:2026)
This European Standard was approved by CEN on 24 May 2026.

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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9693:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 9693:2026) 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 February 2027, and conflicting national standards
shall be withdrawn at the latest by February 2027.
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 9693:2019.
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 9693:2026 has been approved by CEN as EN ISO 9693:2026 without any modification.

International
Standard
ISO 9693
Fourth edition
Dentistry — Compatibility testing
2026-07
for metal-ceramic and ceramic-
ceramic systems
Médecine bucco-dentaire — Essais de compatibilité pour
systèmes métallo-céramiques et céramo-céramiques
Reference number
ISO 9693:2026(en) © ISO 2026
ISO 9693:2026(en)
© ISO 2026
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 9693:2026(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 2
4.1 Biocompatibility .2
4.2 Physical properties .2
4.2.1 General .2
4.2.2 Thermal expansion .2
4.2.3 De-bonding/crack-initiation test .2
4.2.4 Thermal shock resistance .3
5 Sampling . 3
5.1 Metallic substructure material .3
5.2 Ceramic substructure material .3
5.3 Veneering ceramic .3
6 Test methods . 3
6.1 Linear thermal expansion .3
6.1.1 Metallic materials .3
6.1.2 Ceramic materials .3
6.2 Glass transition temperature .3
6.3 Young's modulus .3
6.4 De-bonding/crack-initiation test.3
6.4.1 Apparatus .3
6.4.2 Preparation of test specimens .4
6.4.3 Determination of fracture force .4
6.4.4 Test report .6
6.5 Thermal shock testing .6
6.5.1 General .6
6.5.2 Preparation of test specimen .7
6.5.3 Thermocycling test with fixed temperature interval .7
6.5.4 Thermocycling test with increasing temperature interval .7
7 Test report . 8
Bibliography .10

iii
ISO 9693:2026(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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 fourth edition cancels and replaces the third edition ISO 9693:2019, of which it constitutes a minor
revision.
The main changes are as follows:
— Dated references to ISO 6872 and ISO 22674 have been updated.
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 9693:2026(en)
Introduction
Dental veneering ceramics and metal alloys or substructure ceramics are suitable materials for the fabrication
of dental restorations. Compatibility between the veneering ceramic and the substructure material under
mechanical and thermal loading is essential if they are to function in a prosthetic construction.
This document specifies requirements and test methods for assessing the risk of failure associated with
masticatory forces and the oral environment.

v
International Standard ISO 9693:2026(en)
Dentistry — Compatibility testing for metal-ceramic and
ceramic-ceramic systems
1 Scope
This document specifies requirements and test methods to assess the thermomechanical compatibility
between a veneering ceramic and a metallic or ceramic substructure material used for dental restoratio
...