DIN EN ISO 13078-2-2016 Dentistry - Dental furnace - Part 2 Test method for evaluation of furnace programme via firing glaze (ISO 13078-2 2016) German version EN ISO 13078-2 2016《牙.pdf

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1、December 2016 English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 11.060.01!%V7“2595120www.din.de

2、DIN EN ISO 13078-2Dentistry Dental furnace Part 2: Test method for evaluation of furnace programme via firing glaze (ISO 130782:2016);English version EN ISO 130782:2016,English translation of DIN EN ISO 13078-2:2016-12Zahnheilkunde Brennofen Teil 2: Prfverfahren zur Bewertung des Brennprogrammes mit

3、tels Brenngradbestimmung (ISO 130782:2016);Englische Fassung EN ISO 130782:2016,Englische bersetzung von DIN EN ISO 13078-2:2016-12Mdecine buccodentaire Four dentaire Partie 2: Mthode dessai pour lvaluation du programme de cuisson dun four via une cuisson de glaure (ISO 130782:2016);Version anglaise

4、 EN ISO 130782:2016,Traduction anglaise de DIN EN ISO 13078-2:2016-12SupersedesDIN 139052:200701www.beuth.deDocument comprises 18 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.11.16 DIN EN ISO 13078-2:2016-12 2 A comma is use

5、d as the decimal marker. National foreword This document (EN ISO 13078-2:2016) has been prepared by Technical Committee ISO/TC 106 “Dentistry” in collaboration with Technical Committee CEN/TC 55 “Dentistry” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-

6、Normenausschuss Dental (DIN Standards Committee Dentistry), Working Committee NA 014-00-07 AA Keramiken. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1942 DIN EN ISO 1942 ISO 2768-1 DIN ISO 2768-1 ISO 3696 DIN ISO 3696 ISO 6872 DIN E

7、N ISO 6872 ISO 9693-1 DIN EN ISO 9693-1 ISO 13078 DIN EN ISO 13078 Amendments This standard differs from DIN 13905-2:2007-01 as follows: a) normative references are now made to international standards; b) ISO 13078-2:2016 has been adopted as EN ISO 13078-2:2016; c) the procedure to be followed for e

8、valuation of the firing results has been rendered more precise. Previous editions DIN 13905-2: 2007-01 DIN EN ISO 13078-2:2016-12 3 National Annex NA (informative) Bibliography DIN EN ISO 1942, Dentistry Vocabulary DIN EN ISO 6872, Dentistry Ceramic materials DIN EN ISO 9693-1, Dentistry Compatibili

9、ty testing Part 1: Metal-ceramic systems DIN EN ISO 13078, Dentistry Dental furnace Test method for temperature measurement with separate thermocouple DIN ISO 2768-1, General tolerances Tolerances for linear and angular dimensions without individual tolerance indications DIN ISO 3696, Water for anal

10、ytical laboratory use Specification and test methods DIN EN ISO 13078-2:2016-12 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 13078-2 August 2016 ICS 11.060.01 English Version Dentistry - Dental furnace - Part 2: Test method for evaluation of furnace pro

11、gramme via firing glaze(ISO13078-2:2016) Mdecine bucco-dentaire - Four dentaire - Partie 2: Mthode dessai pour lvaluation du programme de cuisson dun four via une cuisson de glaure(ISO 13078-2:2016) Zahnheilkunde - Brennofen - Teil 2: Prfverfahren fr die Bewertung des Brennprogrammes mittels Brenngr

12、adbestimmung (ISO 13078-2:2016) This European Standard was approved by CEN on 9 August 2016. 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

13、 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 u

14、nder 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, Forme

15、r Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EU

16、ROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 13078-2:2016 EForeword .4Introduction 51 Scope . 62 Nor

17、mative references 63 Terms and definitions . 64 Test method . 74.1 Materials . 74.2 Devices . 84.3 Preparation of the test specimens 94.4 Firing 104.4.1 Implementation .104.4.2 Firing data of the dental ceramic manufacturer 114.5 Evaluation of the firing results .114.6 Correction .125 Test report 13

18、Bibliography .14Contents PageEuropean foreword . 3EN ISO 13078-2:2016 (E) DIN EN ISO 13078-2:2016-12 2 European foreword This document (EN ISO 13078-2:2016) has been prepared by Technical Committee ISO/TC 106 “Dentistry” in collaboration with Technical Committee CEN/TC 55 “Dentistry” the secretariat

19、 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 February 2017, and conflicting national standards shall be withdrawn at the latest by February 2017. Attention is drawn to

20、 the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following co

21、untries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

22、Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 13078-2:2016 has been approved by CEN as EN ISO 13078-2:2016 without any modification. EN ISO 13078-2:2016 (E) DIN EN ISO 13078-2:2016-12 3 ForewordISO (the In

23、ternational 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 h

24、as 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

25、 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 documents should be noted. This document was drafted in ac

26、cordance 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. Deta

27、ils 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).Any trade name used in this document is information given for the convenience of users and does not constitute an en

28、dorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.ht

29、ml.The committee responsible for this document is ISO/TC 106, Dentistry, Subcommittee SC 2, Prosthodontic materials.A list of all parts in the ISO 13078 series can be found on the ISO website.EN ISO 13078-2:2016 (E) DIN EN ISO 13078-2:2016-12 4 IntroductionDental furnaces are suitable for the manufa

30、cturing of metal-ceramic and partly also all-ceramic restorations for use in dentistry. Dental furnaces are particularly used for firing or sintering, respectively, of dental opaques, dentine and enamel materials to the respective compatible substructure materials. According to the current state of

31、the art, the temperature of this process lies between 600 C and 1 000 C.The different calibration processes applied by the manufacturers of dental furnaces as well as the varying construction types of the dental furnaces currently on the market influence the firing result.Despite the fact that diffe

32、rent dental furnaces can have identical digital external displays, different results regarding the degree of firing can be identified when processing the same ceramics under otherwise similar conditions.A different degree of firing not only causes differences that can be judged directly by the human

33、 eye (e.g. colour and transparency), but also deviations that cannot be detected by the eye. These are, for instance, the linear coefficient of thermal expansion, the bonding strength, the strength values and the acid solubility. Such changes may result in clinical failures (e.g. fractures) as well

34、as changed aesthetics of the dental ceramic restoration.EN ISO 13078-2:2016 (E) DIN EN ISO 13078-2:2016-12 5 1 ScopeThis document determines a degree of firing to be implemented by the user. It represents a test method for adapting the firing program of a dental furnace by determining the degree of

35、firing of fired test specimens for a dental ceramic.The test method is suitable for powdered dental ceramics according to ISO 6872, Type I.The test method enables monitoring of the temperature control in the dental furnace by evaluating the firing degree of a dental ceramic. The test method is also

36、suitable for evaluating the reproducibility of the firings in a dental furnace or for comparing several dental furnaces.2 Normative referencesThe 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 refer

37、ences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 2768-1, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance indicationsISO 3696, Water for analytical l

38、aboratory use Specification and test methodsISO 13078, Dentistry Dental furnace Test method for temperature measurement with separate thermocouple3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 1942, ISO 6872, ISO 9693-1 and ISO 13078 and the followin

39、g apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: ISO Online browsing platform: available at http:/www.iso.org/obp IEC Electropedia: available at http:/www.electropedia.org/3.1degree of firingsurface or edge state of a dental ceramic, which

40、has been treated thermally (i.e. fired, sintered) according to definite firing instructions and which enables statements concerning the physical properties to be evaluated with the eye, such as transparency, colour, surface quality (roughness or smoothness) as well as shrinkage and edge stability of

41、 the test specimenNote 1 to entry: The degree of firing of dental ceramics is differentiated into under-fired, correctly fired and over-fired.EN ISO 13078-2:2016 (E) DIN EN ISO 13078-2:2016-12 6 3.2under-fired dental ceramicdental ceramic with significant porosities, observable inadequate translucen

42、ce and still indistinct colour, whose appearance is milky and grey-white opaque and with a surface that is rough and without lustreNote 1 to entry: No transparency or inadequate colour impression can, however, also result in smooth surfaces as a result of residual porosities inside the specimen.Note

43、 2 to entry: The best evaluation of under-fired dental ceramics is possible in the case of very transparent colour-intensive dental ceramics.Note 3 to entry: Although test specimens that are heated too quickly up to the maximum firing temperature exhibit a highly lustrous surface, the inside is milk

44、y opaque. These specimens are also under-fired inside.3.3correctly fired dental ceramicdental ceramic without porosities, whose surface does not exhibit any opaqueness, and with slightly rounded edgesNote 1 to entry: Colour and transparency correspond to a standard specimen or the reference sample o

45、f the relevant manufacturer.3.4over-fired dental ceramicdental ceramic without porosities, whose surface exhibits a high lustre and whose edges are significantly rounded3.5reference samplecorrectly fired comparison sample of a dental ceramic (provided by manufacturer of veneering ceramic)4 Test meth

46、od4.1 Materials4.1.1 Dental ceramic material, powdered, transparent and possibly coloured (e.g. blue), from the existing range for visual comparison with a specimen specified as standard or a reference sample.4.1.2 Liquid, e.g. alcohol, water according to ISO 3696, grade 3, mixing liquid.4.1.3 Firin

47、g tray.4.1.4 Firing pins about 12 mm long.4.1.5 Firing underlay, e.g. firing cotton about 20 mm 20 mm 3 mm or platinum foil about 20 mm 20 mm 0,03 mm or similar firing underlay.4.1.6 Only when using the platinum foil in 4.1.5: For the coating of the platinum foil: Aluminium oxide powder (Al2O3powder

48、), e.g. Bikorit.1)4.1.7 Reference sample (provided by the manufacturer of veneering ceramic).1) Bikorit is an example of a suitable product available commercially. This information is given for the convenience of users of this document and does not constitute an endorsement by ISO of this product.EN ISO 13078-2:2016 (E) DIN EN