EN ISO 7551:2023/prA1

Dentistry - Endodontic absorbent points - Amendment 1 (ISO 7551:2023/DAM 1:2025)

Zahnheilkunde - Endodontische absorbierende Spitzen - Änderung 1 (ISO 7551:2023/DAM 1:2025)

Médecine bucco-dentaire - Cônes absorbants utilisés en endodontie - Amendement 1 (ISO 7551:2023/DAM 1:2025)

Zobozdravstvo - Endodontska vpojna sredstva - Dopolnilo A1 (ISO 7551:2023/DAM 1:2025)

General Information

• Status: Not Published
• Publication Date: 28-Sep-2026
• ICS: 11.060.10 - Dental materials
• Technical Committee: CEN/TC 55 - Dentistry
• Current Stage: 4060 - Closure of enquiry - Enquiry
• Start Date: 23-May-2025
• Completion Date: 23-May-2025
• Ref Project: SIST EN ISO 7551:2023/oprA1:2025 - Dentistry - Endodontic absorbent points - Amendment 1 (ISO 7551:2023/DAM 1:2025)

Relations

• Amends: EN ISO 7551:2023 - Dentistry - Endodontic absorbent points (ISO 7551:2023)
• Effective Date: 04-Oct-2023

Overview

EN ISO 7551:2023/prA1 (ISO 7551:2023/DAM 1:2025) is a draft amendment to the international standard ISO 7551:2023 - Dentistry: Endodontic absorbent points. Circulated by ISO/TC 106/SC 1 (secretariat AFNOR) in collaboration with CEN, the amendment clarifies definitions, updates dimensional illustrations and measurement points, replaces sizing tables for greater‑taper points, and refines test/verification language. This document is a draft (voting period Feb–May 2025) and is subject to change.

Key topics and requirements

• Size designation (nominal size D): The amendment clarifies that the nominal size is based on the calculated diameter at the end of the point with the extended taper and is expressed in hundredths of a millimetre (represented as “###” for D).
• Definitions and notes: New notes explain how to determine D for standard, greater and variable taper absorbent points and refer users to Figure 1 for nominal size location.
• Dimensional measurement points: The key diameter measurements are defined as d3 (diameter at 3 mm from the tip) and d16 (diameter at 16 mm from the tip). Figure 1 and the Key have been updated accordingly.
• Terminology: The phrase “taper points” is replaced by “taper absorbent points” throughout the relevant clauses.
• Conformance testing:
  • Standard absorbent points are to be compared to dimensions in Table 1 (nominal sizes 008–140) with tolerances referenced in clause 4.4.
  • Greater taper absorbent points are to be compared to the new Table 2, which lists diameters at D, d3 and d16 for various nominal sizes and taper percentages.
  • Variable taper absorbent points require verification of the initial taper by measuring diameters at two distances within the initial taper section from the tip.
• Editorial updates: Minor editorial changes (e.g., spelling out numerals) are included.

Applications and users

This amendment is relevant to:

• Manufacturers of endodontic absorbent points and dental materials - for product design, manufacturing tolerances and labelling (nominal size D, taper classification).
• Quality control and testing laboratories - for dimensional checks, conformance testing and sampling against Table 1/2 requirements.
• Regulatory bodies and procurement teams - for standards-based specification and conformity assessment of endodontic supplies.
• Dental professionals (endodontists, dental technicians) - to understand size/taper nomenclature and compatibility with instruments and obturation systems.

Related standards and classification

• ICS: 11.060.10 - Dental materials
• Prepared under ISO/TC 106 (Dentistry), SC 1 (Filling and restorative materials) and aligned with CEN procedures (Vienna Agreement).
• Users should reference the full ISO 7551:2023 text and the finalized amendment when published for precise test methods, tolerances and Figure/Table visuals.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2025
Zobozdravstvo - Endodontska vpojna sredstva - Dopolnilo A1 (ISO 7551:2023/DAM
1:2025)
Dentistry - Endodontic absorbent points - Amendment 1 (ISO 7551:2023/DAM 1:2025)
Zahnheilkunde - Endodontische absorbierende Spitzen - Änderung 1 (ISO
7551:2023/DAM 1:2025)
Médecine bucco-dentaire - Cônes absorbants utilisés en endodontie - Amendement 1
(ISO 7551:2023/DAM 1:2025)
Ta slovenski standard je istoveten z: EN ISO 7551:2023/prA1
ICS:
11.060.10 Zobotehnični materiali Dental materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
Amendment
ISO 7551:2023/
DAM 1
ISO/TC 106/SC 1
Dentistry — Endodontic absorbent
Secretariat: AFNOR
points
Voting begins on:
AMENDMENT 1
2025-02-28
Médecine bucco-dentaire — Cônes absorbants utilisés en Voting terminates on:
endodontie 2025-05-23
AMENDEMENT 1
ICS: 11.060.10
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
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.
Reference number
ISO 7551:2023/DAM 1:2025(en)
DRAFT
ISO 7551:2023/DAM 1:2025(en)
Amendment
ISO 7551:2023/
DAM 1
ISO/TC 106/SC 1
Dentistry — Endodontic
Secretariat: AFNOR
absorbent points
Voting begins on:
AMENDMENT 1
Médecine bucco-dentaire — Cônes absorbants utilisés en Voting terminates on:
endodontie
AMENDEMENT 1
ICS: 11.060.10
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: [phone]
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO 7551:2023/DAM 1:2025(en)
ii
ISO 7551:2023/DAM 1:2025(en)
Foreword
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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).
An
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