EN ISO 23298:2023

Dentistry - Test methods for machining accuracy of computer-aided milling machines (ISO 23298:2023)

This document specifies the test methods to evaluate the machining accuracy of computer-aided milling machines as a part of dental CAD/CAM systems, which fabricate dental restorations, such as inlays, crowns and bridges.

Zahnheilkunde - Prüfverfahren zur Bewertung der Genauigkeit von computergesteuerten Fräsmaschinen (ISO 23298:2023)

Dieses Dokument legt die Prüfverfahren zur Beurteilung der Fertigungsgenauigkeit von computergesteuerten Fräsmaschinen als Komponenten eines dentalen CAD/CAM-Systems fest, mit denen dentale Restaurationen, wie Inlays, Kronen und Brücken, gefertigt werden.

Médecine bucco-dentaire - Méthodes d'essai pour l'exactitude d'usinage des fraiseuses à commande numérique (ISO 23298:2023)

Le présent document spécifie les méthodes d’essai permettant d’évaluer l’exactitude d’usinage des fraiseuses à commande numérique utilisées au sein de systèmes dentaires de CFAO pour fabriquer des restaurations dentaires, telles que des couronnes, des bridges et des inlays.

Zobozdravstvo - Preskusne metode za natančnost obdelave računalniško podprtih strojev za rezkanje (ISO 23298:2023)

Ta dokument določa preskusne metode za vrednotenje natančnosti obdelave računalniško podprtih strojev za rezkanje v okviru zobnih sistemov CAD/CAM, ki izdelujejo zobne zalivke, npr. inleji, prevleke in mostički.

General Information

• Status: Published
• Publication Date: 06-Jun-2023
• ICS: 11.060.01 - Dentistry in general
• Technical Committee: CEN/TC 55 - Dentistry
• Drafting Committee: CEN/TC 55 - Dentistry
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 07-Jun-2023
• Completion Date: 07-Jun-2023
• Ref Project: SIST EN ISO 23298:2023 - Dentistry - Test methods for machining accuracy of computer-aided milling machines (ISO 23298:2023)

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2023
Zobozdravstvo - Preskusne metode za natančnost obdelave računalniško podprtih
strojev za rezkanje (ISO 23298:2023)
Dentistry - Test methods for machining accuracy of computer-aided milling machines
(ISO 23298:2023)
Zahnheilkunde - Prüfverfahren zur Bewertung der Genauigkeit von computergesteuerten
Fräsmaschinen (ISO 23298:2023)
Médecine bucco-dentaire - Méthodes d'essai pour l'exactitude d'usinage des fraiseuses
à commande numérique (ISO 23298:2023)
Ta slovenski standard je istoveten z: EN ISO 23298:2023
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 23298
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2023
EUROPÄISCHE NORM
ICS 11.060.01
English Version
Dentistry - Test methods for machining accuracy of
computer-aided milling machines (ISO 23298:2023)
Médecine bucco-dentaire - Méthodes d'essai pour Zahnheilkunde - Prüfverfahren zur Bewertung der
l'exactitude d'usinage des fraiseuses à commande Genauigkeit von computergesteuerten Fräsmaschinen
numérique (ISO 23298:2023) (ISO 23298:2023)
This European Standard was approved by CEN on 30 April 2023.

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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 23298:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 23298:2023) 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 December 2023, and conflicting national standards
shall be withdrawn at the latest by December 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.
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 23298:2023 has been approved by CEN as EN ISO 23298:2023 without any modification.

INTERNATIONAL ISO
STANDARD 23298
First edition
2023-05
Dentistry — Test methods for
machining accuracy of computer-
aided milling machines
Médecine bucco-dentaire — Méthodes d’essai pour l’exactitude
d’usinage des fraiseuses à commande numérique
Reference number
ISO 23298:2023(E)
ISO 23298:2023(E)
© ISO 2023
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 23298:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General . 2
5 Test methods . 2
5.1 Metal die method . 2
5.1.1 Target restorations. 2
5.1.2 Apparatus . 2
5.1.3 Measurement of metal dies . 5
5.1.4 Preparation of three-dimensional data . 5
5.1.5 Machining of restorations . 7
5.1.6 Evaluation of accuracy . 8
5.2 Test methods for software method . 13
5.2.1 General .13
5.2.2 Test object . . 15
5.2.3 Equipment and apparatus . 18
5.2.4 Machining of specimens . 18
5.2.5 Measurement . 20
5.2.6 Data alignment procedures . 21
5.2.7 Data analysis procedure . 22
5.2.8 Calculation of total errors . 25
6 Test report .26
6.1 General information.26
6.2 Specific information. 27
6.2.1 Die method . 27
6.2.2 Software method. 27
6.3 Averaged characteristic accuracy values. 27
6.3.1 Die method . 27
6.3.2 Software method.28
Annex A (informative) Flow chart of test method .29
Annex B (normative) Measurement of die set(s) and preparation of CAD data of target
restoration(s) . . .31
Annex C (informative) Contents of test reports .41
Bibliography .46
iii
ISO 23298:2023(E)
Foreword
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