EN 29333:1991
(Main)Dental brazing materials (ISO 9333:1990)
Dental brazing materials (ISO 9333:1990)
Dentallote (ISO 9333:1990)
Produits pour brasage à usage dentaire (ISO 9333:1990)
Traite de la sécurité des outils dont la tension assignée n'est pas supérieure à 250 V en courant monophasé alternatif ou courant continu et 440 V en courant alternatif triphasé. Complète ou modifie les articles correspondants de la CEI 60745-1.
Cette version consolidée comprend la première édition (2003) et
son amendement 1 (2008). Il n'est donc pas nécessaire de commander
l'amendement avec cette publication.
Dental brazing materials (ISO 9333:1990)
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Dental brazing materials (ISO 9333:1990)Dentallote (ISO 9333:1990)Produits pour brasage a usage dentaire (ISO 9333:1990)Dental brazing materials (ISO 9333:1990)11.060.10Dental materialsICS:Ta slovenski standard je istoveten z:EN 29333:1991SIST EN 29333:2000en01-januar-2000SIST EN 29333:2000SLOVENSKI
STANDARD
SIST EN 29333:2000
SIST EN 29333:2000
SIST EN 29333:2000
INTERNATIONAL STANDARD ISO 9333 First edi tion 1990-05-15 Dental brazing materials Produits pour brasage 2 wage dentaire Reference number ISO 9333: 199O(E) SIST EN 29333:2000
ISO 9333:1990(E) ISO (the International Organization for Standardization) is a worldwide federation of national Standards bodies (ISO member bodies). Jhe work of preparing International Standards is normally carried out through ISO technical committees. Esch 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, govern- mental 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. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Interna- tional Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 9333 was prepared by Jechnical Committee ISO/JC 106, Dentistry. 0 ISO 1990 All rights reserved. No part of this publication may be reproduced or utilizeci in any form or by any means, electronie or mechanical, including photocopying and microfilm, without Permission in writing from the publisher. international Organization for Standardization Case Postale 56 * CH-121 1 Geneve 20 l Switzerland Printed in Switzerland ii SIST EN 29333:2000
ISO 9333:1990(E) Introduction Specific qualitative and quantitative requirements for freedom from bi- ological hazard are not included in this International Standard but it is recommended that in assessing possible biological or toxicological hazards, reference should be made to ISO/JR 7405:1984, Biological evaluation of dental materiak. . . . Ill SIST EN 29333:2000
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_- .- INTERNATIONAL STANDARD ISO 9333:1990(E) Dental brazing materials 1 Scope Jhis International Standard specifies requirements and test methods for brazing materials suitable for use in brazing cast dental restorations. 2 Normative reference Jhe following Standard contains provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publi- cation, the edition indicated was valid. All Standards are subject to revision, and Parties to agreements based on this International Standard are encour- aged to investigate the possibility of applying the most recent edition of the Standard indicated below. Members of IEC and ISO maintain registers of cur- rently valid International Standards. ISO 6892:1984, Metallic materials - Tensile testing. 3 Definitions For the purposes of this International Standard, the following definitions apply. 3.1 dental brazing material: Alloy suitable for use as a filier material in operations in which dental alloy(s) Parts are joined to form a dental restoration. 3.2 flow temperature: Lowest temperature at which the filier material is fluid enough to flow into the gap and to wet the surface of the metallic Parts. 4 Requirements 4.1 Chemical composition Jhe composition of the brazing material shall be within 0,5 % (HI/ITZ) of the value for each component stated by the manufacturer [see clause 7a)]. If the dental brazing material contains more than 0,l % (m/m) of nicke1 and/or more than 0,02 % (m/m) of beryllium, Cadmium and/or lead, the manufacturer shall clearly state this [see clause 7f)]. Jesting shall be in accordance with Standard ana- lytical procedures of sufficient accuracy for the re- quired values. 4.2 Biocompatibility See Introduction for guidance on biocompatibility. 4.3 Corrosion resistance A comparison of the surfaces of an untreated and a treated specimen shall not reveal any visible evi- dence that a Chemical reaction has occurred. Jesting shall be in accordance with 6.3. 4.4 Tarnish resistance A comparison of the surfaces of an untreated and a treated specimen shall not reveal any signifrcant darkening or discolouration of the treated specimen surface. Jesting shall be in accordance with 6.4. 4.5 Mechanical strength of brazed joint (tensile strength) Jhe maximum stress of the specimen shall exceed 350 MPa’) or the 0,2 % proof stress of the weakest of the metallic Parts. Jesting shall be in accordance with 6.5. 1) 1 MPa = 1 Nimm* 1 SIST EN 29333:2000
ISO 9333:1990(E) 6.22 Spetimens for corrosion and tarnish testing 4.6 IUlelting range Cast four Square specimens of dimensions The solidus and the liquidus temperature of the brazing material shall be within + IO “C of the - values given in the manufacturer’s instructions [see clause 7b)]. 10 mm x IO mm x 1 mm and clean the surfaces. Then tut the specimens in half (5 mm x IO mm x 1 mm). Prepare two halves of the recommended dental alloy(s) for brazing. The gap between the tut pieces shall be between 0,i mm and 0,2 mm unless the manufacturer’s instructions direct otherwise. Use the recommended flux and follow the manufac- turer’s instructions on brazing. Testing shall be in accordance with 6.6. 4.7 Flaw temperature The flow temperature of the brazing material shall * be within + 10 “C of the value given in the manufacture?s instructions [see clause 7c) and clause Sc)]. For corrosion testing, polish and clean the speci- mens on both IO mm x 10 mm surfaces according to common metallographic procedures. For tarnish testing, cold-mount the specimens and then grind, polish and clean them according to common metallographic procedures. Testing shall be in accordance with 6.7. 4.8 Conditians before use 6.2.3 Spetimens for tensile testing The brazing material shall be clean and uniform in colou r. Prepare three specimens for testing according to figure 1 or figure 2. lt is suggested that the test specimens should be made out of a casting Pattern as shown in figure3. Separate the s
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