EN ISO 12163:2000

SLOVENSKI STANDARD
01-november-2001
Dental baseplate/modelling wax (ISO 12163:1999)
Dental baseplate/modelling wax (ISO 12163:1999)
Dentale Basisplatten- und Modellierwachse (ISO 12163:1999)
Cires dentaires a modeler (ISO 12163:1999)
Ta slovenski standard je istoveten z: EN ISO 12163:2000
ICS:
11.060.10 =RERWHKQLþQLPDWHULDOL Dental materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 12163
First edition
1999-05-01
Dental baseplate/modelling wax
Cires dentaires à modeler
A
Reference number
ISO 12163:1999(E)
ISO 12163:1999(E)
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
International Standard ISO 12163 was prepared by Technical Committee ISO/TC 106, Dentistry, Subcommittee
SC 2, Prosthodontic materials.
©  ISO 1999
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet iso@iso.ch
Printed in Switzerland
ii
© ISO
ISO 12163:1999(E)
Introduction
This International Standard does not specify the requirements for safety from biological or toxicological hazards. It is
however recommended that reference be made to ISO 7405 and ISO 10993-1 for assessing possible biological or
toxicological hazards.
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INTERNATIONAL STANDARD  © ISO ISO 12163:1999(E)
Dental baseplate/modelling wax
1 Scope
This International Standard specifies the classification of, and requirements for, dental baseplate/modelling wax
consisting of natural and synthetic waxes used principally in the construction of dentures, together with the test
methods to be employed to determine compliance with those requirements.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this International Standard are encouraged to
investigate the possibility of applying the most recent editions of the normative documents indicated below. For
undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC
maintain registers of currently valid International Standards.
ISO 1302, Technical drawings — Method of indicating surface texture.
ISO 1942-2, Dental vocabulary — Part 2: Dental materials.
ISO 3336:1993,
Dentistry — Synthetic resin teeth.
ISO 4824:1993, Dentistry — Ceramic denture teeth.
ISO 6873:1998, Dental gypsum products.
3 Classification
Dental baseplate/modelling waxes are classified according to the flow characteristics that represent their hardness,
as follows:
Type 1:  Soft
Type 2:  Hard
Type 3:  Extra-hard
4 Requirements
4.1 Appearance
The sheet wax shall be uniform in colour and thickness, of smooth texture and free of foreign materials. Use visual
inspection (6.1) to determine compliance with this requirement.
© ISO
ISO 12163:1999(E)
4.2 Colour
The colour of the wax shall be as stated by the manufacturer. Use visual inspection to determine compliance with
this requirement (6.1).
4.3 Behaviour on softening
When heated, the wax shall soften without crumbling or becoming flaky, and shall cohere readily and not laminate
when formed into a working mass (6.1).
4.4 Behaviour on trimming
o
The wax shall be trimmed easily and cleanly with a sharp instrument at (23,0 – 2,0) C without tearing, chipping or
flaking (6.1).
4.5 Appearance after flaming
The wax shall have a smooth glossy surface after sufficient flame heating to melt the wax superficially (6.1).
4.6 Residue
The wax shall not leave a residue on ceramic or plastic teeth when tested as described in 6.2.1.
4.7 Behaviour of colouring material
The colouring material shall neither separate from the wax nor impregnate the gypsum mould when tested as
described in 6.2.1.
4.8 Flow behaviour
The samples of wax, when tested in accordance with 6.2.2, shall have flow properties complying with the
requirements in Table 1.
Table 1 — Flow at certain temperatures
Type 1 Type 2 Type 3
Temperature
°C Minimum (%) Maximum (%) Minimum (%) Maximum (%) Minimum (%) Maximum (%)
(23,0 – 0,1) — 1,0 — 0,6 — 0,2
(37,0 – 0,1) 5,0 90,0 — 10,0 — 1,2
(45,0 – 0,1) — — 50,0 90,0 5,0 50,0
© ISO
ISO 12163:1999(E)
4.9 Adhesion on storage
Self-adhesion during storage of the wax shall be such that when tested as described in 6.2.3, there shall be no
evidence of damage to wax surfaces that have been in contact with each other or with the paper. Where separating
paper is used, the wax and paper surfaces shall separate cleanly and readily.
5 Sampling
The method of procurement and the amount of wax needed for testing shall be the subject of agreement between
the interested parties. The material procured shall be from a single production batch.

6 Test methods
6.1 Visual inspection
Use visual inspection in determining compliance with requirements specified in 4.1, 4.2, 4.3, 4.4 and 4.5.
6.2 Physical tests
6.2.1 Residue and colouring material
6.2.1.1 Apparatus
of design illustrated in Figure 1, which incorporates a trough 5 mm wide and at least
6.2.1.1.1 Metal former,
1,5 mm deep for use in mounting the teeth.
for denture flasking and processing, as shown in Figure 1.
6.2.1.1.2 Normal dental laboratory apparatus
6.2.1.2 Procedure
Place a strip of the test wax in the trough of the metal former. Mount three anterior synthetic polymer teeth
conforming to ISO 3336 and three ceramic teeth conforming to ISO 4824 into the wax as shown in Figure 1 a).
Invest the metal former and mounted teeth in a denture flask using dental plaster or dental stone, or both,
conforming to ISO 6873 [see Figure 1b)]. Let the flask remain undisturbed for between 2 h and 3 h after pouring the
o
plaster or stone in contact with the wax. Then immerse the flask in a water bath at (50 – 2) C for 10 min, remove
and open immediately. Strip out the metal block and the bulk of the wax, and flush the flask with a continuous
stream of boiling water for (60 – 5) s.
6.2.1.3 Evaluation
When examined in ac
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