SIST EN ISO 8325:2023/A1:2026
(Amendment)Dentistry - Test methods for rotary instruments - Amendment 1 (ISO 8325:2023/Amd 1:2026)
Zahnheilkunde - Prüfverfahren für rotierende Instrumente - Änderung 1 (ISO 8325:2023/Amd 1:2026)
Médecine bucco-dentaire - Méthodes d'essai pour instruments rotatifs - Amendement 1 (ISO 8325:2023/Amd 1:2026)
Zobozdravstvo - Preskusne metode za vrtilne instrumente - Dopolnilo A1 (ISO 8325:2023/Amd 1:2026)
General Information
- Status
- Published
- Public Enquiry End Date
- 29-Jun-2025
- Publication Date
- 10-Jun-2026
- Technical Committee
- VAZ - Healthcare
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 28-May-2026
- Due Date
- 02-Aug-2026
- Completion Date
- 11-Jun-2026
Relations
- Effective Date
- 01-Jul-2026
Overview
SIST EN ISO 8325:2023/A1:2026 is an amendment to the international standard ISO 8325:2023, which focuses on test methods for rotary instruments used in dentistry. Developed by the International Organization for Standardization (ISO) in collaboration with the European Committee for Standardization (CEN), this document introduces updated metrics and clarifications to enhance the testing and evaluation of rotary dental instruments. The amendment addresses measurement procedures, definitions, and improvements to ensure the safety, reliability, and performance of rotary instruments in dental and laboratory environments.
Key Topics
- Definitions and Terminology: The amendment references ISO 1797, ISO 1942, and ISO 21850-1 for consistent terminology, ensuring clarity across documents.
- Shank Dimensions: Updates the instructions for determining shank diameter and length, providing clear guidelines on how to measure these metrics, including handling surface markings such as color codes.
- Test Loading and Procedures: Clarifies how applied loads should be used during tests, specifically the magnitude and duration of forces and when to take additional measurements.
- Calculation of Neck Strength: Introduces a defined calculation method for determining the test force for neck strength. This includes formulas relating the geometry of the rotary instrument (such as minimum neck diameter and length) to the appropriate test force.
- Test Force Limitations: Establishes a maximum test force of 60 N to prevent unrealistic stress conditions not encountered during clinical use. Practical recommendations are included, such as the typical forces advised by manufacturers of diamond instruments.
Applications
The amendments in SIST EN ISO 8325:2023/A1:2026 are critical for dental professionals, manufacturers, and regulatory agencies. Their key applications include:
- Product Development: Manufacturers of dental rotary instruments must follow the updated test methods to ensure devices meet international standards for safety and reliability.
- Quality Assurance: Dental laboratories use the standard to validate the structural integrity and performance characteristics of rotary instruments, such as burs, drills, and reamers.
- Regulatory Compliance: The standardized procedures outlined support compliance with regional and international regulations, aiding market access and patient safety.
- Procurement Evaluation: Dental practices and clinics can reference these standards when selecting instruments, ensuring that tested products meet essential safety and durability criteria.
Related Standards
Utilizing SIST EN ISO 8325:2023/A1:2026 alongside related documents strengthens compliance and interoperability within the dental sector. Key related standards include:
- ISO 1797: Rotary instruments for dentistry - Shanks
- ISO 1942: Dentistry - Vocabulary
- ISO 21850-1: Dentistry - Test methods for rotary instruments
- ISO 7711: Dental rotary instruments - Diamond instruments
- EN ISO 8325: Dentistry - Test methods for rotary instruments (core standard)
Practical Value
By adhering to this amendment, dental product manufacturers, testing laboratories, and suppliers can ensure:
- Consistent measurement practices for rotary dental instruments
- Enhanced safety and reliability through standardized testing methods
- Alignment with evolving technological and regulatory requirements
The adoption of SIST EN ISO 8325:2023/A1:2026 supports best practices in dental instrument manufacturing, providing confidence for clinicians and safeguarding patient outcomes.
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Frequently Asked Questions
SIST EN ISO 8325:2023/A1:2026 is a amendment published by the Slovenian Institute for Standardization (SIST). Its full title is "Dentistry - Test methods for rotary instruments - Amendment 1 (ISO 8325:2023/Amd 1:2026)". This standard covers: Dentistry - Test methods for rotary instruments - Amendment 1 (ISO 8325:2023/Amd 1:2026)
Dentistry - Test methods for rotary instruments - Amendment 1 (ISO 8325:2023/Amd 1:2026)
SIST EN ISO 8325:2023/A1:2026 is classified under the following ICS (International Classification for Standards) categories: 11.060.20 - Dental equipment; 11.060.25 - Dental instruments. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 8325:2023/A1:2026 has the following relationships with other standards: It is inter standard links to SIST EN ISO 8325:2023. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN ISO 8325:2023/A1:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2026
Zobozdravstvo - Preskusne metode za vrtilne instrumente - Dopolnilo A1 (ISO
8325:2023/Amd 1:2026)
Dentistry - Test methods for rotary instruments - Amendment 1 (ISO 8325:2023/Amd
1:2026)
Zahnheilkunde - Prüfverfahren für rotierende Instrumente - Änderung 1 (ISO
8325:2023/Amd 1:2026)
Médecine bucco-dentaire - Méthodes d'essai pour instruments rotatifs - Amendement 1
(ISO 8325:2023/Amd 1:2026)
Ta slovenski standard je istoveten z: EN ISO 8325:2023/A1:2026
ICS:
11.060.25 Zobotehnični instrumenti Dental instruments
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 8325:2023/A1
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2026
EUROPÄISCHE NORM
ICS 11.060.20
English Version
Dentistry - Test methods for rotary instruments -
Amendment 1 (ISO 8325:2023/Amd 1:2026)
Médecine bucco-dentaire - Méthodes d'essai pour Zahnheilkunde - Prüfverfahren für rotierende
instruments rotatifs - Amendement 1 (ISO Instrumente - Änderung 1 (ISO 8325:2023/Amd
8325:2023/Amd 1:2026) 1:2026)
This amendment A1 modifies the European Standard EN ISO 8325:2023; it was approved by CEN on 25 April 2026.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant 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 amendment 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 8325:2023/A1:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 8325:2023/A1:2026) 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 Amendment to the European Standard EN ISO 8325:2023 shall be given the status of a national
standard, either by publication of an identical text or by endorsement, at the latest by November 2026,
and conflicting national standards shall be withdrawn at the latest by November 2026.
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.
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 8325:2023/Amd 1:2026 has been approved by CEN as EN ISO 8325:2023/A1:2026
without any modification.
International
Standard
ISO 8325
Third edition
Dentistry — Test methods for rotary
2023-03
instruments
AMENDMENT 1
AMENDMENT 1
2026-05
Médecine bucco-dentaire — Méthodes d'essai pour instruments
rotatifs
AMENDEMENT 1
Reference number
ISO 8325:2023/Amd.1:2026(en) © ISO 2026
ISO 8325:2023/Amd.1:2026(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
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