SIRIUS NEWS 2/2011SIRIUS NEWS 2/2011

customizedCercon htconservative preparation – fully contoured

2

Introduction

A wish comes true

Expectations of a contemporary prosthetic material include

multiple colouring and natural translucency.

Cercon ht, with its outstanding translucency, combines 10 years of Cercon experience

with current expectations of a state-of-the-art aesthetic shade result. For both the fully

contoured variety and for the combination with Cercon ceram love or Cercon ceram Kiss

a wish comes true for achieving individually tailored restorations with Cercon.

Sincerely,

Team Sirius

Cercon ht

The new zirconia generation

SIRIUS NEWS 2/2011

3

The shade-defining base was stained as per

the recipe.

Fully contoured framework aspects can be

primed with soft-flowing colours.

Scanning/design with

Cercon eye or 3Shape

+ multi-colouring technique

+ Cercon body stains

+ Cercon glaze

Total time 30 minutes (max)

Additional staining with Cercon body stains

(cf. page 13).

Finished bridge after glazing. Tooth 35 is

veneered; teeth 36 and 37 are fully contoured.

The new zirconia generation

Cercon ht

4

customized

Cercon ht

Post-processing: approx. 5 minutes

Note: Tool diameter must be at least 1 mm.

Procedures

1. Staining the unsintered framework

as per the formula (cf. page 10)

2. Customizing the base shade in two

stain firings

3. Glazing the surface

5

1–2 shade firings

5 minutes for the foundation

1–2 shade firings

Cercon body stains

5 minutes for staining

Creating lustre with Cercon glaze

2 minutes for glazing

Significantly ✔ improved light transmission

Cercon ht offers a significantly improved light transmission towards other zirconia

framework brands.

Safe staining formula ✔

The foundation formula using staining liquids offers reliable guidance in reproducing

the 11 most common Vita shades. The formula has been fine-tuned specifically for

Cercon ht; it is not transferable to other zirconia frameworks.

Dipping and multi-colouring are available ✔

You have the choice between a single-shade dipped framework structure (dipping)

or a multi-coloured undercoating.

The multi-coloured shade system lets you create fully contoured restorations with

reliable shades as per the shade guide. Multi-coloured Cercon ht frameworks for

subsequent veneering improve aesthetics and create additional depth. Cercon ht

and Cercon ceram love veneering ceramics will always result in a highly natural

appearance, even with thin veneer layers.

The special shade formula makes the reflection behaviour of zirconia more harmo-

nized, bringing it very close to nature.

The multi-colouring technique is a three-step technique.

SIRIUS NEWS 2/2011

Translucent and colour reliable

Cercon ht is characterized by an

excellent penetration depth. Minor

occlusal adjustments can be made

without compromising restoration

shade (no bright spots).

Results of the multi-colouring technique. The reflection effect is natural.

The gradual colour transitions form the basis for the final shade.

Cercon ht

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customized

Tools and materials

Details for pre-sintering

Fully contoured objects

within the blank.

CUTTER, CROSS-CUT, F INE 40100 S IR IUS CERAMICS

ROUND BUR 40208 S IR IUS CERAMICS

RUBBER CUP/FLAME 40300 S IR IUS CERAMICS

Finishing frameworks with fully contoured aspects is a very delicate task.

Carefully select your tools to avoid damaging the framework. Carefully fi-

nish and smooth the areas where connectors were attached in the blank.

Minor imprecisions in contour may also be corrected. Always work at low

speeds, avoiding pressure.

Translu cent and reliable

The objects are finished

using clean cross-cut tungsten

carbide cutters.

SIRIUS NEWS 2/2011

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Never weaken pontic connectors. !

The minimum wall thickness is 0.5 mm. !

Keep all cutters absolutely clean to protect the material’s favourable !

physical properties.

Make sure that the surface has some residual roughness (chalky surface) !

to allow penetration of the stain according to the formular.

While finishing, do not apply excessive pressure. The framework is very !

delicate and easily damaged.

Use only Sirius Ceramics rubber cups. Other rubber cups may leave !

inclusions in the surface (black spots).

Make sure never to weaken pontic

connectors.

The surface must not be excessively

smoothed, ensuring that the liquids

can permeate the surface.

Occlusal finishing with a round bur

with a minimum size of 1 mm.

Translu cent and reliable

Important notes

x

Cercon ht

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customized

Tools

The brush must not contain any metal. !

The holding clasp must be protected by plastic tubing to prevent the !

metal from having contact with the liquid.

Use the brush with smooth, uninterrupted movements. !

Rinse the brush in neutral liquid before changing shades. !

Return residual liquid to its container. !

Use utmost care when working with colouring liquids. Avoid any contact with

the skin. Follow the manufacturer’s safety recommendations.

Reliable shade sintering

Important notes

SIRIUS NEWS 2/2011

9

Allow the frameworks to dry sufficiently and place in the Cercon

heat Plus as per the manufacturer’s instructions.

The Cercon ht/DeguDent sintering parameters apply.

.

Pre-dry all frameworks under infra-red light for 45 to !

60 minutes.

Excessive temperatures may result in mottled shades !

or even damage the framework.

Reliable shade sintering

Weigh the framework on a gold scale

before applying the liquid. The weight gain

after drying must not exceed 10%.

Suggestion

Cercon ht

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customized

5)

Formula for multi-colouring

SHADE A1 A2 A3 A3.5 B1

monochrome* 5 seconds 5 seconds 5 seconds 5 seconds 5 seconds

polychrome**

Before sintering

1) Margin I 1 x A 3,5 C 2 x A 3,5 C 3 x A 3,5 C

2) Margin II 2 x A 3 P 2 x A 3,5 P 2 x A 3,5 P 2 x A 3,5 P 2 x B 3 P

3) Cervical 2 x A 2 P 2 x A 3 P 2 x A 3 P 2 x A 3 P 2 x B 2 P

4)Dentin /

enamel

2 x A 2 P

Brush out

2 x A 2 P

Brush out

2 x A 2 P

Brush out

2 x A 3 P

Brush out

2 x B 2 P

Brush out

5) Occlusal 2 x A 2 P 2 x A 2 P 2 x A 2 P 2 x A 2 P 2 x B 2 P

After sintering

Body I, II Body 1, 2 Body 1, 2 Body 1, 2 Body 1, 2 Body 1, 4

Margin area

Cervical

Brush out occlusally

Centre of the occlusal area:

Add a drop of Colour Liquid to the fissure.

Dentin / enamel, brush out

* The entire framework has a uniform basic shade ** Gradual colour transitions similar to those of the natural tooth for 11 Vita shades C Colour Liquid, Zirkonzahn P Prettau, Zirkonzahn

1), 2) 4)

4) 5)3)

11

Important notes

SIRIUS NEWS 2/2011

B2 B3 C2 C3 D2 D3

5 seconds 5 seconds 5 seconds 5 seconds 5 seconds 5 seconds

Before sintering

1x B4 C 2 x B4 C 1 x C3 C 2 x C3 C 1x D3 C 2 x D3 C

2 x B3 P 2 x B4 P 2 x C3 P 2 x C3 P 2 x D3 P 2 x D3 P

2 x B3 P 2 x B3 P 2 x C2 P 2x C3 P 2 x D2 P 2 x D3 P

2 x B2 P

Brush out

2 x B2 P

Brush out

2 x C2 P

Brush out

2 x C2 P

Brush out

2 x D2 P

Brush out

2 x D2 P

Brush out

2 x B2 P 2 x B2 P 2 x C2 P 2 x C2 P 2 x D2 P 2 x D2 P

After sintering

Body 1, 4 Body 1, 4 Body 6, 7 Body 6, 7 Body 7, 9 Body 7, 9

COLOUR L IQUID/Z IRKONZAHN A3.5, B4, C3, D3

(more intensive shades)

PRETTAU L IQUID / Z IRKONZAHN A2, A3, A3.5, B2, B3, B4, C2, C3, D2, D3

(weaker shades)

NEUTRAL L IQUID (TH INNER, BRUSH CLEANING L IQUID )

Tools and materials

The procedure requires five steps. Brush out the liquid for each of the regions !

described with the associated shade using smooth, uninterrupted movements.

The liquids, and two intensities: colour (more intensive) and Prettau (weaker). !

Once the stain has been completely applied, place the framework on a level !

surface and dry under an infra-red light for at least 30 to 45 minutes.

Do not place on a metal surface or on tissue, as these may react with the stai- !

ning liquids!

Cercon ht

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customized

Important notes

Finishing the shade

After the shade-sintering step, you can apply stain directly onto the frame-

work. Perform any minor corrections to the framework using a water-cooled

turbine. Following the multi-colouring Cercon ht staining, finish the shading

using the Cercon body stains according to the combination chart related to

the Vita shade.

Follow the manufacturer’s recommendations when applying the Cercon body !

stains.

Make sure the stains have a creamy consistency to prevent “islands” from !

forming on the surface.

Finishing the shade requires two firings (for shade assignments see page 11). !

The glaze firing is performed using Cercon glaze. Glaze firing is a necessa- !

ry step: the glaze is required to “seal” the surface.

SIRIUS NEWS 2/2011

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General firing recommendations

Firing Preheating

°C

Drying

°C

Heating

°C / min.

Final temp°C Holding

min.

Vacuum

hPa

Cooling

min.

STA IN/

GLAZE450 3 :00 55 800 1 :00 — 6:00

Very minor corrections can be performed using Cercon ceram love correction material.

Follow the firing recommendations for Cercon ceram love.

Cercon ht

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customized

Step by step

Sintered

1st stain

application

2nd stain

application

follows

Occlusal

Vestibular

Mesial

A1 A2 A3 A3.5 B1

The multi-colouring technique creates the perfect shade base for the 11

most popular Vita shades and for gradual colour transitions.

Cercon ht after glazing

SIRIUS NEWS 2/2011

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Simple steps to successs

B2 B3 C2 C3 D2 D3

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customized

Procedure

The Cercon ht multi-coloured

technique can be applied for custom

framework staining to achieve a

natural appearance with thin ceramic

layers.

The shade of two-piece Cer-

con abutments can be custo-

mized with the result that co-

lour shift is minimized in the

gingival area.

In oral implantology, Cercon ht can

be used to replicate missing hard

and soft tissues in a very realistic

manner.

Minimized colour shift

Deceptively real

Natural appearance

Cercon ht framework

+ Pressed-to gingiva portions

+ Cercon ht crowns

+ Cercon ceram love

Cercon ht

customized

SIRIUS NEWS 2/2011

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Finishing Cercon ht frameworks after sintering/polishingPerform all occlusal adjustments using a water- !

cooled turbine and appropriate diamond burs.

Finishing after occlusal adjustments and subse- !

quent polishing are essential to protect the anta-

gonist.

Minor additions can be performed using Cercon !

ceram love correction material.

Insufficient drying times may cause frame- !

work damage.

Before sintering, thoroughly remove any dust !

or contamination (black spots).

Unsuitable instruments or excessive pressu- !

re may destroy the unsintered framework.

Dry on a suitable surface in order to prevent !

the stain from running. Tissue is not suitable.

Too strong staining may be caused by exces- !

sive dipping or staining times with the liquid.

Metal surfaces or oxide contamination may !

cause framework discolouration.

DIAMANT 40 µM/RED D IV. S IR IUS CERAMICS

PRE-POLISH/BLUE 40410 S IR IUS CERAMICS

HIGH-POLISH/RED 40420 S IR IUS CERAMICS

BRUSH + D IAMOND

PASTE 40500 S IR IUS CERAMICS

Minimized colour shift

Avoiding errors

Finishing after occlusal adjustments

Cercon ht

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customized

Clinical cases

Single crowns, teeth 15, 16, 17

Cercon ht, fully contoured.

With Cercon ht, fluorescence can be

individually influenced.

Cercon ht, fully contoured crown

All clinical photographs courtesy of Dr. Rafaela Jenatschke, Frankfurt.

From practitioners for practitioners

Cercon ht

customized

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Multi-coloured Cercon ht framework,

veneered with Cercon ceram love.

12, crown; 11–22, bridge.

Multi-coloured Cercon ht framework before

shade finishing and intraorally.

Tailor-made aesthetics with Cercon ht

From practitioners for practitioners

SIRIUS NEWS 2/2011

Cercon ht

customized

Sirius Ceramics | Carsten Fischer

Lyoner Straße 44 – 48

60528 Frankfurt

Germany

E-Mail info @ sirius-ceramics.com

Web www. sirius-ceramics.com

www. sirius-ceramicsshop.com

Fon 069 66366910

Fax 069 66366911

My special thanks go to Tanja Wagner, Lilli Schermer, Jan Stiller and Dr. Rafaela Jenatschke

for their unbelievable performance to develop and realize this concept.

“Cercon ht strikes the right balance between reliable standards and customized aesthetics.”

Carsten Fischer, May 2011