EN ISO 5365:2024

SLOVENSKI STANDARD
01-junij-2024
Zobozdravstvo - Sistem označevanja razvojne faze zob (ISO 5365:2024)
Dentistry - Designation system for tooth development stages (ISO 5365:2024)
Zahnheilkunde - Bezeichnungssystem für die Entwicklungsstadien der Zähne (ISO
5365:2024)
Médecine bucco-dentaire - Système de désignation des stades de développement
dentaire (ISO 5365:2024)
Ta slovenski standard je istoveten z: EN ISO 5365:2024
ICS:
11.060.01 Zobozdravstvo na splošno Dentistry in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 5365
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2024
EUROPÄISCHE NORM
ICS 11.060.01
English Version
Dentistry - Designation system for tooth development
stages (ISO 5365:2024)
Médecine bucco-dentaire - Système de désignation des Zahnheilkunde - Bezeichnungssystem für die
stades de développement dentaire (ISO 5365:2024) Entwicklungsstadien der Zähne (ISO 5365:2024)
This European Standard was approved by CEN on 7 March 2024.

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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 5365:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 5365:2024) 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 September 2024, and conflicting national standards
shall be withdrawn at the latest by September 2024.
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 5365:2024 has been approved by CEN as EN ISO 5365:2024 without any modification.

International
Standard
ISO 5365
First edition
Dentistry — Designation system for
2024-03
tooth developmental stages
Médecine bucco-dentaire — Système de désignation des stades de
développement dentaire
Reference number
ISO 5365:2024(en) © ISO 2024
ISO 5365:2024(en)
© ISO 2024
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 5365:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Crown developmental stages (see Annex A) .1
3.2 Root developmental stages (see Annex A) .2
3.3 Apex developmental stages (see Annex A) .3
4 Structure of the code . 3
5 Designation of tooth developmental stages . 3
Annex A (informative) Tables of tooth development . 5
Bibliography . 9

iii
ISO 5365:2024(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 3, Terminology,
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.

iv
ISO 5365:2024(en)
Introduction
Many age estimation methods using various body systems exist; however, the human dentition is
considered one of the most accurate biological indicators of chronological age. Because tooth development is
predominantly regulated by genetics, environmental factors have only a minimal effect on the development
process.
Dental age assessment is typically based on 2D radiographic data correlating the degree of tooth
development to the chronological age of a population. However, there are different scoring systems, with
different numbers of stages and nomenclature of stages. Furthermore, different methods use the same
scoring system and have different time intervals. Therefore, the number of dental developmental stages
can vary greatly depending on the method used. In addition, some methods only offer diagrams, without
descriptors, of tooth stages, which can lead to ambiguity in stage assignment and can affect the accuracy of
the result of a technique.
Therefore, creating a standardized terminology with diagrams for tooth developmental stages is vital to
improve the consistency of these score attributions, add objectivity to the assessment and improve the
accuracy of the results.
For the purposes of this document, the tooth designation is assigned as outlined in ISO 3950.

v
International Standard ISO 5365:2024(en)
Dentistry — Designation system for tooth developmental
stages
1 Scope
This document specifies a method for designating the coding and nomenclature for tooth developmental
stages using a single letter and number to facilitate data entry and support interoperability.
The first letter represents the part of the tooth (crown, root and apex), and the number represents the stage
of development of the tooth part.
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 20888, Dentistry — Vocabulary and designation system for forensic oro-dental data
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 1942, ISO 20888 and the following
apply.
ISO and IEC maintain terminology 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 Crown developmental stages (see Annex A)
3.1.1
stage C0
crown developmental stage at which no appearance is observed
Note 1 to entry: No visible evidence of development is observed.
3.1.2
stage C1
crown developmental stage at which bud is present but no evidence of mineralisation is observed
3.1.3
stage C2
crown developmental stage at which developed enamel is minute
Note 1 to entry: Stage C2 is analogous to the stage at which mineralisation has commenced.
Note 2 to entry: The incisal edge can be seen as a straight line (incomplete outline) in anterior teeth.
Note 3 to entry: In posterior teeth, isolated cusp tips can be seen as small isolated triangles with gaps in between.

ISO 5365:2024(en)
3.1.4
stage C3
cro
...