22

Trouble shooting

SOLUTIONSCAUSES

Solder does not flow Adequately preheat the soldering object and the

soldering base

Observe recommended flame settings

Use recommended flux

Soldering gap is not completelyfilled

Use adequate quantity and the recommended solder

Check dimensions and the preparation of the soldering

gap

Prevent oxide formation

Observe correct flame settings / temperature increase rate

Ensure even heating of the metal framework and the

soldering base

Use recommended flux

Porosity in the soldering gap Do not overheat the solder / observe processing

temperature

Prevent oxide formation; observe correct flame settings

Even heating of the metal framework and the soldering

base

Use recommended flux

Distortion of the bridge Observe recommended soldering gap width

Observe recommended dimensions of the soldering

connection

Follow manufacturers instructions for mixing soldering

investment

Melted framework (hole) Even heating of the soldering object

Observe recommended flame dimensions

Observe recommended flame settings

Weak soldering connections Prevent oxidation before and during soldering

Observe recommended dimensions of the soldering

connection

Exact preparation of the soldering surface

Ensure the homogeneity of the soldering structure

Use recommended solder

1

2

3

4

5

6

7

8

9

Short Instructions

PRE-SOLDERING

The soldering gap with parallel walls should show awidth of at least 0.05 mm and 0.2 mm at the mostand demonstrate sufficiently large surfaces.

Roughen the soldering surfaces with a suitable grin-ding instrument or by blasting with 50 micron Al2O3.The soldering surfaces must be clean, i.e. free ofgrease and oxide.

Secure the individual framework elements on themodel in a stress-free fashion and close the solderinggap using modelling wax.

Fabricate the soldering base as small as possible andwith rounded edges. After setting, remove the waxwith steam or hot water.

While the object is still warm, apply flux into thesoldering gap and preheat the soldering base in thepreheating furnace at approximately 600 C/1112 Ffor 10 minutes.

Heat up the soldering object to the processingtemperature of the solder.

Heat the soldering object with the correctly set flame.Once the processing temperature has been reached,apply the solder to the soldering gap from theopposite direction.

Allow the soldering object to cool slowly and divest.Remove oxides and flux residue by blasting and / orpickling.

Grind the soldering site and prepare it for oxidation.

POST-SOLDERING

1

2

3

4

5

6

7

8

9

A correctly prepared wax-up serves as the basis.Soldering after ceramic firing requires solderingsurfaces with sufficient surface area.

The soldering gap with parallel walls should show awidth of at least 0.05 mm and 0.2 mm at the mostand demonstrate sufficient surface dimensions.

Roughen the soldering surfaces with a suitable grin-ding instrument or by blasting with 50 micron Al2O3.The soldering surfaces must be clean, i.e. free ofgrease and oxide.

Secure the individual framework elements on themodel in a stress-free fashion and close the solderinggap using modelling wax. Cover the ceramic materialwith wax to prevent the soldering investment fromcoming into contact with the ceramic.

Fabricate the soldering base as small as possible andwith rounded edges. After setting, remove the waxwith steam or hot water.

While the object is still warm, apply flux into thesoldering gap. Make sure that the flux does not comeinto contact with the ceramic material.

Form the suitable post-solder into a ball, wet it withflux, and position the flat end of the solder in thesoldering gap.

Preheat the soldering object in the ceramic furnaceat approximately 600 C for 10 minutes andsubsequently heat up under vacuum to approximately50 C above the processing temperature of the solder.

After soldering, allow the object to cool to room tem-perature slowly and then divest it. Remove oxides andflux residue using a pickling agent (PCT AScid).

10Polish the bridge to a high gloss.

Ivoclar Vivadent worldwide

Ivoclar Vivadent AGBendererstrasse 2FL-9494 SchaanLiechtensteinTel. +423 235 35 35Fax +423 235 33 60www.ivoclarvivadent.com

Ivoclar Vivadent Pty. Ltd.1 5 Overseas DriveP.O. Box 367Noble Park, Vic. 3174AustraliaTel. +61 3 979 595 99Fax +61 3 979 596 45www.ivoclarvivadent.com.au

Ivoclar Vivadent GmbHBremschlstr. 16Postfach 223A-6706 BrsAustriaTel. +43 5552 624 49Fax +43 5552 675 15www.ivoclarvivadent.com

Ivoclar Vivadent Ltda.Rua Geraldo Flausino Gomes,78 6. andar Cjs. 61/62Bairro: Brooklin NovoCEP: 04575-060 So Paulo SPBrazilTel. +5511 5102 2020Fax +5511 5102 4704www.ivoclarvivadent.com

Ivoclar Vivadent Inc.2785 Skymark Avenue, Unit 1MississaugaOntario L4W 4Y3CanadaTel. +1 905 238 5700Fax +1 905 238 5711www.ivoclarvivadent.us.com

Ivoclar Vivadent Marketing Ltd.Rm 603 Kuen YangInternational Business PlazaNo. 798 Zhao Jia Bang RoadShanghai 200030ChinaTel. +86 21 5456 0776Fax +86 21 6445 1561www.ivoclarvivadent.com

Ivoclar Vivadent Marketing Ltd.Calle 134 No. 7-B-83, Of. 520BogotColombiaTel. +57 1 627 33 99Fax +57 1 633 16 63www.ivoclarvivadent.com

Ivoclar Vivadent SASB.P. 118F-74410 Saint-JoriozFranceTel. +33 450 88 64 00Fax +33 450 68 91 52www.ivoclarvivadent.fr

Ivoclar Vivadent GmbHDr. Adolf-Schneider-Str. 2D-73479 Ellwangen, JagstGermanyTel. +49 (0) 79 61 / 8 89-0Fax +49 (0) 79 61 / 63 26www.ivoclarvivadent.de

Ivoclar Vivadent Marketing Ltd. (LiasionOffice)503/504 Raheja Plaza15 B Shah Industrial EstateVeera Desai Road, Andheri( West)Mumbai, 400 053IndiaTel. +91 (22) 2673 0302Fax +91 (22) 2673 0301www.ivoclarvivadent.com

Ivoclar Vivadent s.r.l. & C. s.a.sVia Gustav Flora, 3239025 Naturno (BZ)ItalyTel. +39 0473 67 01 11Fax +39 0473 66 77 80www.ivoclarvivadent.it

Ivoclar Vivadent K.K.1-28-24-4F HongoBunkyo-kuTokyo 113-0033JapanTel. +81 3 6903 3535Fax +81 3 5844 3657www.ivoclarvivadent.co.jp

Ivoclar Vivadent S.A. de C.V.Av. Mazatln No. 61, Piso 2Col. Condesa06170 Mxico, D.F.MexicoTel. +52 (55) 5062-1000Fax +52 (55) 5062-1029www.ivoclarvivadent.com.mx

Ivoclar Vivadent Ltd.12 Omega St, AlbanyPO Box 5243 Wellesley StAuckland, New ZealandTel. +64 9 914 9999Fax +64 9 630 61 48www.ivoclarvivadent.co.nz

Ivoclar VivadentPolska Sp. z.o.o.ul. Jana Pawla II 78PL-01-501 WarszawaPolandTel. +48 22 635 54 96Fax +48 22 635 54 69www.ivoclarvivadent.pl

Ivoclar Vivadent Marketing Ltd.Derbenevskaja Nabereshnaja 11W115114 MoscowRussiaTel. +7495 913 66 16Fax +7495 913 66 15www.ivoclarvivadent.ru

Ivoclar Vivadent Marketing Ltd.171 Chin swee road#02-01 San centreSingapore 169877Tel. +65 6535 6775Fax +65 6535 4991www.ivoclarvivadent.com

Ivoclar Vivadent S.A.c/Emilio Muoz, 15Esquina c/AlbarracnE-28037 MadridSpainTel. + 34 91 375 78 20Fax + 34 91 375 78 38www.ivoclarvivadent.com

Ivoclar Vivadent ABDalvgen 14S-169 56 SolnaSwedenTel. +46 8 514 93 930Fax +46 8 514 93 940www.ivoclarvivadent.se

Ivoclar Vivadent Liaison OfficeAhi Evran Caddesi No 1Polaris Is Merkezi Kat: 780670 MaslakIstanbulTurkeyTel. +90 212 346 04 04Fax +90 212 346 04 24www.ivoclarvivadent.com.tr

Ivoclar Vivadent UK LimitedGround Floor Compass BuildingFeldspar CloseWarrens Business ParkEnderbyLeicester LE19 4SEUnited KingdomTel. +44 116 284 78 80Fax +44 116 284 78 81www.ivoclarvivadent.co.uk

Ivoclar Vivadent, Inc.175 Pineview DriveAmherst, N.Y. 14228USATel. +1 800 533 6825Fax +1 716 691 2285www.ivoclarvivadent.us.com

593495/1104/2/e/VVA