ZIROX NR Veneering Ceramic Expect the difference!

ZIROX NR

As zirconium oxide is increasingly being used as a key material for

dental frameworks, veneering ceramics are similarly playing an

ever more important part in the creation of restorations which

combine outstanding biocompatibility and strength with stun-

ning aesthetics. ZIROX NR therefore delivers a perfect shade

match. When used as part of this coordinated system together

with CAD/CAM frameworks in zirconium oxide from the

ZENOTEC system or Nobel Procera®, ZIROX NR guarantees the

best possible light dynamics, which in turn gives you perfectly

natural colour properties. First class aesthetic and physical values

make this ceramic into a comprehensive system solution for the

veneering of zirconium oxide frameworks. All the accessories you

need and with processes and a range of applications which are

compatible with NobelRondo™ Zirconia. Aesthetics and function-

ality thus complement each other to produce perfect results.

ZIROX NR veneering ceramics for zirconium oxide frameworks are based on the unique leucite-free HDAM*.

ZIROX NR allows you to express your dental expertise to tangible

perfection. Its leucite-free microstructure gives a homogeneous

surface which is both kind to the gingiva and plaque resistant. In

addition, this structure is a boon for all your daily dental restora-

tion jobs since it combines minimal shrinkage with extremely

stable firing properties, enabling you to create perfect and

affordable dentures with a high degree of reproducibility.

A perfect balance of func-tionality and aesthetics

“When designing the tooth colour, the aim

is not only to reproduce the basic shade, but

to imitate the structures of natural dentition.”

Master Dental Technician Ernst A. Hegenbarth

in Quintessenz 1990

* High Density Advanced Microstructure

2

Your work will be characterized by homogene-

ous surfaces with a high degree of translucence.

For many years now, WIELAND X-Type ceramics have been

amongst the preferred veneering ceramics in dental labs all over

the world. Years of investment in the development of materials

expertise that is second to none and cooperating in matters of

design with dental technicians such as E. A. Hegenbarth have laid

the foundations for a sophisticated range of models and the

very best in manufacturing quality. Our manufacturing facilities

at locations in Germany set such high standards that other

suppliers such as Nobel Biocare also make their NobelRondo™

ceramics here. As a user of ZIROX NR ceramics, you, too, can rely

on a truly leading standard which will benefit your customers

in terms of patient comfort, aesthetics and durability.

Very smooth and homogeneous surfaces thanks to HDAM

Aesthetically reproducible shade matching, light dynamics

and natural colour properties

Exceptionally good bonding and high strength

Ideal working properties with reliable colour reproduction

using the classical three-layer build-up technique opaque

(liner) – dentine – incisal)

Using X-Type veneering ceramics gives ideal physical properties and covers a broad range of indications.

Whether you use the WIELAND 3-layer technique or any other

established process, you can obtain aesthetic restorations in

harmonized colours. This ensures that you can obtain perfect

colour results without changing your technique.

Masterpieces of natural brilliance and durability

The ZIROX NR system is based on the proven,

easy-to-follow and innovative dynamic colour

harmony system of the Creative Circle concept

developed by Ernst A. Hegenbarth.

Specific diffractions of light are imitated by

modern dental ceramics.

3

ZIROX NR

4

Harmonized colours in the light of experience and innovation

Nature knows no bounds when it comes to the interplay of light, shape and colour. In

dental technology, it is our task to use technical means to recreate this vivid world. With

ZIROX NR you can meet the challenge of zirconium oxide frameworks with elegance.

ZIROX NR veneering ceramic is suitable for veneering hard sin-tered all-ceramic frameworks based on ZrO2 with a CTE of approx. 10.5 x 10-6 K-1 (25 - 500°C).

In addition to the working properties of conventional materials, ZIROX NR offers you a

much greater range of design options which you can adjust to suit your needs by varying

the chroma, brightness and transparency:

Specifically designed contrasts and unique colour depth with Chromatix

Characterization effects at the dentine core with Dentine Modifiers and Flu Dentines

Light dynamics and reflections in the incisal area with Incisal Modifiers and Opale

Effect materials

The stains then provide the finishing touch for even the most extreme indications.

The result can be seen in the fine difference revealed by the sophisticated ZIROX NR

veneering ceramic.

The task of innovative development is to

understand nature and use technology to

recreate it.

The carving liquids for the WIELAND X-Type

ceramics are ideally suitable for use with ZIROX

NR materials.

Transparence and reproducibility are not only needed for your restorations but above all

in the design concept of your ceramic materials. The ZIROX NR concept, which is based

on the Hegenbarth Principle of a dynamic, harmonized colour system, is easy to under-

stand and just as easy to implement.

The colour scheme of the labels is easy to follow and built up on a strictly defined principle.

The basic layer build-up of both complex and low-cost jobs can quickly be transferred

and implemented. The materials are allocated on the basis of harmonized colour seg-

ments, the products are coordinated and the results can clearly be seen in the evident

success of the close cooperation between industry and laboratory.

It is easy to transfer your working practices from one system

to the other because the product names are similar

The colours and physical properties are identical

The materials are compatible with WIELAND carving liquids.

And should any questions still remain unanswered, WIELAND ZIROX NR will enable

you to experience what a customer-friendly approach can actually achieve in everyday

practice. Simply contact your regular WIELAND representative or team member or call

our ceramic specialists direct on our technical hotline: +49 60 07/91 76-222

Concept and structures for the col-ourful world of dental technology

5

Allocating ZIROX NR materials to NobelRondo™

The dentine colours C4 and D4 can be mixed as follows:

C4 = 1 part Dentine C3 + 1 part Modifier Taiga

D4 = 1 part Dentine C2 + 1 part Dentine B4

Important!

All materials from the ZIROX NR range are compatible with NobelRondo™ Zirconia

and can therefore be mixed.

WIELAND guarantees all restorations which are made in accordance with the processing

recommendations set out here.

Super Bright High Value Warm Chroma Sunny Chroma Pearl Chroma Low Value

Liner Super Bright High Value Warm Chroma Sunny Chroma Pearl Chroma Low Value

Dentine A0 B0 B1 A1 A2 A3 A3,5 A4 B4 B3 B2 D2 D3 C3 C2 C1

Incisal OI0 OI0 OI1 OI1 OI2 I3 I3 I4 I4 I3 OI3 OI2 I3 I4 I3 I2

Build-up of ZIROX NR

TranspaTranspa

Opale EffectMother- of-Pearl

Incisal ModifierColoured Translucencies

CopingZrO2 framework

LinerBase Liner

ChromatixChromatizer

Flu DentineInner Core

DentineDentin

IncisalEnamel

ModifierInternal Modifier

Opale Incisal

Transpa

Stain

Shoulder

Liner

Dentine

Flu Dentine

Chromatix™

Modifier

Incisal

Opale Effect

Contraindications

Veneering of zirconium oxide frameworks with defects in the form of cracks, fissures or cavitations. Unsuitable preparation types (e.g. tangential preparations) Cases where space is restricted If the patient suffers from parafunctional habits (such as bruxism) Major grinding work carried out by the dentist or the dental technician on the

restoration (interior and exterior of ZrO2 framework or the veneering ceramic) with rotary instruments without water cooling and with the exertion of considerable contact pressure.

ZIROX NR

Note!

All-ceramic frameworks should only be finished with suitable grinding tools (medium-grain

diamond burs) applied at a low contact pressure and making use of water cooling.

As a rule, avoid grinding the restoration (framework and veneering ceramic) to any great extent

or using a cutting disc to separate the units.

After using rotary instruments on the veneering ceramic, a glaze bake must always be carried out.

This process reduces stress and microcracks in the veneer. These recommendations apply to both

the dental technician and the practitioner.

We recommend the use of zirconium oxide frameworks from the ZENOTEC system.

Instructions for use – ZIROX NR

6

Designing the framework

The framework must be anatomical in shape and above all should support the veneer in

the area of the cusps. This principle should also be observed when designing restorations

in the incisal area. Under no circumstances should the wall thickness be less than the

minimum of 0.4 mm – 0.6 mm. Any excessive absence of tooth substance must be made

up for by the framework design and not compensated for by a correspondingly thicker

veneer. Please ensure that the cross-section of the connector is suitably large. In the

posterior region, this should be 9.0 mm² and in the anterior region 7.0 mm². In addition,

ensure that the occlusal / incisal veneering ceramic has a minimum thickness of 1.0 mm

and a maximum of 2.0 mm. The basal surfaces should be designed with a minimum

thickness of 1.0 mm and a maximum of 1.5 mm.

Conditioning the framework prior to veneering

Gentle sandblasting of the zirconium oxide framework is recommended. This cleans the

surface of the framework and helps the veneering ceramic to cover better. The zirconium

oxide framework should therefore be blasted with approx. 110 µm aluminium oxide

abrasive at approx. 1 bar. Carrying out additional heat treatment (cleaning bake) on the

hard sintered framework delivers no further benefits. Ensure that the surface to be

veneered is free of dirt and grease.

Note!

Always round off sharp edges and corners.

The framework must fit on the tooth stump without stress.

The ZIROX NR bottles are ergonomi-

cally styled and a pleasure to hold.

Perfect ergonomics and compatibility

with your tray system make appli-

cation child’s play.

7

Veneermin. 1.0 /max. 2.0 mm

Framework wallmin. 0.4-0.6 mm

Framework wallmin. 0.4-0.6 mm

Veneer min. 1.0 /max. 2.0 mm Veneer thickness, incisal /occlusal min. 1.0 mm and max. 2.0 mm

Veneer thickness, basal min. 1.0 mm and max. 1.5 mm

1,0*–2,0* 1,0*–2,0*

1,0*–1,5*

1,0*–2,0* 1,0*–2,0*1.0*–2.0*

Recommendations for firing

Zirconium oxide is a poor thermal conductor. For this reason

it should be pre-heated in the closed furnace for at least 3

minutes. It is absolutely essential to observe the recommended

firing parameters.

The heat rise must not exceed 45 °C per minute.

Solid firing trays absorb more heat during firing and can

therefore influence the effect of firing on the ceramic. For

this reason and to obtain the best possible results, use honey-

comb firing trays or if solid ones are used increase the firing

temperatures by 10 °C. Best results are obtained by using

honeycomb firing trays and fan-type firing pins.

With larger framework designs, solid pontics or several small

units, the firing temperatures for the first and second dentine

bakes should be increased according to the following rule of

thumb: The end temperature should be increased by 2° C for

each additional unit of the framework (crown, pontic)!

Example: 1. dentine bake

6-unit bridge or 6 single crowns

= 5 additional units

-> 900 °C + (5 x 2 °C)

=> 910 °C end temperature

Do not overfill the firing trays, since increasing the number of

items necessitates a considerably higher firing temperature.

(See rule of thumb.)

In order to minimise the risk of thermal stresses caused by

too rapid cooling, it is essential to open the firing chamber

gradually (slow cooling). Following the ceramic bake, the

veneered zirconium frameworks should be left on the firing

tray and allowed to cool slowly to room temperature next

to the furnace.

Note!

Make sure that no draughts or cold air from outside can cause the work

to cool too quickly, since this can also lead to thermal stress!

The work should not be positioned in the centre of the firing tray but

always aligned to the heating elements.

ZIROX NR

Circular heating element in the furnace and

frameworks correctly arranged within the

recommended temperature range

8

Firing recommendations

Firing programme for ZIROX NR with slow cooling

The ZIROX NR firing programmes with slow cooling for the DEKEMA dental ceramic furnaces can be called up

from www.wieland-international.com. The firing temperatures given are for guidance only. Actual temperatures

may differ depending on the furnace used.

General firing programs

Preheat-temp. [°C]

Drying temp. [min]

Heat rise [°C/min]

Firing temp. [°C]

Holding time [min]

Vacuum [%]

Slow cooling

[min]

1st shoulder bake 575 8 45 980 1 100 –

2nd shoulder bake 575 8 45 960 1 100 –

Liner bake 575 8 45 930 1 100 –

1st dentine bake 575 9 45 900 + X 2 100 4

2nd dentine bake 575 8 45 890 + X 1 100 4

Glaze bake 575 5 45 880 1- 2 – 4

Correction bake 575 5 45 850 1 100 4

Calculating the value of X

Along with incorrect framework design, too low a setting on the furnace is the most common cause of failure.

In other words, it is absolutely crucial to set the firing temperature of your furnace correctly. This is very easy

to do by means of a firing sample with the aid of the ZIROX calibration set (Ref. No. 8595140SET). In order to

adjust the firing temperature of each individual furnace used, the actual firing temperature of the furnace

must first be determined, since this can differ from the temperature shown in the display. It is not unusual to

find a deviation of 20 – 30 °C. To do this, a firing sample of ZIROX NR Transpa Clear is fired in the lab and

compared with the reference sample supplied. Transparency values and surface roughness should be the same

for the firing sample and the reference sample. If this is not the case, then the firing temperature must be

adjusted until the required degree of firing is attained. The difference in temperature between the value

indicated and the actual temperature corresponds to the value X and must accordingly be added to the

value given in the table for each individual firing.

Technical specifications ZIROX NR NobelRondo™ Zirconia

CTE25-500°C [10-6 K-1] 9,3 9,3

Glass transition temperature Tg [°C] 570 570

3-point bending strength [MPa] 120 120

Innovative veneering ceramic with leucite-free

HDAM giving a uniquely homogeneous and

fissure-free structure

9

In order to avoid underfiring the veneering ceramic, the

furnace should be calibrated at regular intervals. This can

easily be done with the aid of the ZIROX calibration set

(Ref. No. 8495240SET).

10

Additional information for dentists

Recommendations for handling all-ceramic restorations in zirconium oxide

Contraindications

If space is restricted or in the case of patients with parafunctional habits (e.g. bruxism),

an alternative type of restoration should be chosen. Similarly, grinding the interior of the

crown framework is contraindicated.

Preparation

Because of the physical properties of the zirconium oxide material, the tooth must be

prepared with a pronounced chamfer or shoulder. A tangential preparation of the tooth

stumps is contraindicated (cf. ZENO Preparation Guide).

Trimming the occlusal and approximal contact points

If correction work has been carried out on the ceramic veneer with rotary instruments,

then it is absolutely essential to follow this by a glaze bake. This reduces stresses and

may correct any damage that the veneer has suffered in the form of microcracks. The

restoration should not be subjected to extensive grinding.

Ensuring that the framework is a good fit

There must be no discernible independent friction at the tooth stump. In order to pre-

vent the ceramic from failing as a result of corrective grinding of the framework, e.g. on

the inner surface of the crown, we recommend an initial try-in of the framework either

before or just after firing. Furthermore, zirconium oxide workpieces must not be

subjected to excessive contact pressure during grinding. Please use only the abrasives

(fine-grain diamond burs) specifically recommended for zirconium oxide and ensure

that there is adequate cooling (e.g. by using a water-cooled turbine handpiece).

Conditioning the inside of the framework before cementing

Gentle sandblasting of the zirconium oxide framework is recommended. This cleans

the inner surface of the framework and guarantees a better bond for the veneering

ceramic. The trimmed zirconium oxide framework should therefore be blasted with ap-

prox. 110 µm aluminium oxide abrasive at approx. 1 bar. Also ensure that the inner

surfaces of the framework are free of dirt and grease.

Recommended fixing method

Zirconium oxide frameworks can be fixed conventionally with glasionomer or zirconium

oxide phosphate cement, but they can also be fixed with composite bonding materials

(e.g. RelyX Unicem from 3M ESPE or Panavia F 2.0 from KURARAY). We advise against

using compomers, acrylic modified glasionomer cements with a high coefficient of

expansion and temporary cements.

Note!

If these recommendations for working with this material are not followed, this can cause

the ceramic veneer to crack or flake off or can even cause the restoration to fracture!

A diamond instrument was used to

customise the contour of this ceramic

bur for use in special cases

Finished preparation

High translucence and light

transmission as far as the sulcus

and the gingiva

Photos. Dr. von BlanckenburgZENO Preparation Guide

11

Ref. No ZIROX NR

ZIROX NR veneering ceramics at a glance

ZIROX NR was introduced in the autumn of 2009 as a WIELAND X-Type ceramic specially intended for design and

tray systems. ZIROX NR is based on the materials technology of the proven WIELAND ZIROX veneering ceramics

and the know-how acquired over many years through the development and manufacture of NobelRondo™ Zirconia

ceramics by WIELAND Dental Ceramics. It is also backed by joint development work with Ernst A. Hegenbarth.

8507210012 Shoulder Super Bright 12g

8507220012 Shoulder High Value 12g

8507230012 Shoulder Warm Chroma 12g

8507240012 Shoulder Sunny Chroma 12g

8507250012 Shoulder Pearl Chroma 12g

8507260012 Shoulder Low Value 12g

8514510020 Liner Super Bright 20g

8514520020 Liner High Value 20g

8514530020 Liner Warm Chroma 20g

8514540020 Liner Sunny Chroma 20g

8514550020 Liner Pearl Chroma 20g

8514560020 Liner Low Value 20g

8514610012 Liner Modifier White 12g

8514620012 Liner Modifier Creme 12g

8514630012 Liner Modifier Orange 12g

8514640012 Liner Modifier Sunny 12g

8514650012 Liner Modifier Pink 12g

8514660012 Liner Modifier Grey-Violet 12g

8504500020 Dentine A0 SB 20g

8504500100 Dentine A0 SB 100g

8504510020 Dentine A1 HV 20g

8504510100 Dentine A1 HV 100g

8504520020 Dentine A2 WC 20g

8504520100 Dentine A2 WC 100g

8504530020 Dentine A3 WC 20g

8504530100 Dentine A3 WC 100g

8504540020 Dentine A3,5 WC 20g

8504540100 Dentine A3,5 WC 100g

8504550020 Dentine A4 WC 20g

8504550100 Dentine A4 WC 100g

8504560020 Dentine B0 SB 20g

8504560100 Dentine B0 SB 100g

8504570020 Dentine B1 HV 20g

8504570100 Dentine B1 HV 100g

8504580020 Dentine B2 SC 20g

8504580100 Dentine B2 SC 100g

8504590020 Dentine B3 SC 20g

8504590100 Dentine B3 SC 100g

8504600020 Dentine B4 SC 20g

8504600100 Dentine B4 SC 100g

8504610020 Dentine C1 LV 20g

8504610100 Dentine C1 LV 100g

8504620020 Dentine C2 LV 20g

8504620100 Dentine C2 LV 100g

8504630020 Dentine C3 LV 20g

8504630100 Dentine C3 LV 100g

8504650020 Dentine D2 PC 20g

8504650100 Dentine D2 PC 100g

8504660020 Dentine D3 PC 20g

8504660100 Dentine D3 PC 100g

8504710020 Dentine Gingiva 1 20g

8504720020 Dentine Gingiva 2 20g

8504730020 Dentine Gingiva 3 20g

8504740020 Dentine Gingiva 4 20g

8504750020 Dentine Gingiva 5 20g

8504760020 Dentine Gingiva 6 20g

8511210020 Flu Dentine Super Bright 20g

8511220020 Flu Dentine High Value 20g

8511220100 Flu Dentine High Value 100g

8511230020 Flu Dentine Warm Chroma 20g

8511230100 Flu Dentine Warm Chroma 100g

8511240020 Flu Dentine Sunny Chroma 20g

8511250020 Flu Dentine Pearl Chroma 20g

8511260020 Flu Dentine Low Value 20g

8503510020 Chromatix Warm Chroma 20g

8503520020 Chromatix Orange WC 20g

8503530020 Chromatix Sunny Chroma 20g

8503540020 Chromatix Low Value 20g

8508310012 Modifier Ivory 12g

8508320012 Modifier Flamingo 12g

8508330012 Modifier Creme 12g

8508340012 Modifier Peach 12g

8508350012 Modifier Caramel 12g

8508360012 Modifier Amber 12g

8508370012 Modifier Bamboo 12g

8508380012 Modifier Honey 12g

8508390012 Modifier Pearl 12g

8508400012 Modifier Taiga 12g

8505320020 Incisal 2 LV 20g

8505320100 Incisal 2 LV 100g

8505330020 Incisal 3 20g

8505330100 Incisal 3 100g

8505340020 Incisal 4 SC 20g

8505340100 Incisal 4 SC 100g

8505510012 Incisal Lemon 12g

8505520012 Incisal Mandarin 12g

8505530012 Incisal Melon 12g

8505540012 Incisal Orange 12g

8505550012 Incisal Papaya 12g

8505560012 Incisal Plum 12g

8506200020 Transpa Opale 20g

8505300020 Transpa Clear 20g

8505310020 Transpa Neutral 20g

8506210020 Opale Incisal 0 SB 20g

8506210100 Opale Incisal 0 SB 100g

8506240020 Opale Incisal 1 HV 20g

8506240100 Opale Incisal 1 HV 100g

8506250020 Opale Incisal 2 20g

8506250100 Opale Incisal 2 100g

8506260020 Opale Incisal 3 SC 20g

8506260100 Opale Incisal 3 SC 100g

8506220020 Opale Effect Blue SB 20g

8506230020 Opale Effect Blue Light HV 20g

8506270020 Opale Effect Grey LV 20g

8506280020, Opale Effect Smoky LV 20g

8506310012 Opale Effect Oyster White 12g

8506320012 Opale Effect LightCoral 12g

8506330012 Opale Effect Pale Shell 12g

8506340012 Opale Effect Pink Pearl 12g

8510310003 Stain White 3g

8510320003 Stain Pink 3g

8510330003 Stain Maize 3g

8510340003 Stain Ivory 3g

8510350003 Stain Peach 3g

8510360003 Stain Caramel 3g

8510370003 Stain Orange 3g

8510380003 Stain Khaki 3g

8510390003 Stain Olive 3g

8510400003 Stain Chestnut 3g

8510410003 Stain Steel 3g

8510420003 Stain Violet 3g

8510300003 Glaze 3g

8512100003 Correction 3g

8590030015 ZIROX Liner Liquid Optimix 15 ml

8590030050 ZIROX Liner Liquid Optimix 50 ml

8390080015 X Carving Liquid Speed 15 ml

8390080050 X Carving Liquid Speed 50 ml

8390080250 X Carving Liquid Speed 250 ml

8390070015 X Carving Liquid Retain 15 ml

8390070050 X Carving Liquid Retain 50 ml

8390070250 X Carving Liquid Retain 250 ml

8390020015 X Stain Liquid 15 ml

8390020050 X Stain Liquid 50 ml

Ref. No ZIROX NR Ref. No ZIROX NR

Ref. No ZIROX Liquids

0483

EXPECT THE DIFFERENCE! BY WIELAND.

As a major supplier of dental system solutions, WIELAND embodies both tradition and progress in matters

of dental products and technology. Since our company was founded in 1871, we have stayed true to

our corporate philosophy of combining tradition, innovation and quality with the best in customer care.

Today, our core competencies and key strengths lie in the forward-looking integration of technologies and

materials for dental prosthetics. This ensures that patients can trust in the quality of their dentures, and

our partners in dental practices and laboratories can continue with confidence on the path to digitalisati-

on and greater competitiveness.

WIELAND offers a wide range of products and services from CAD/CAM technologies and dental

alloys to veneering ceramics and electroforming. Thanks to our worldwide presence and internatio-

nal network of regional branches and local agencies, WIELAND is never far away, and your contact

person can always be located via the Internet.

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www.wieland-international.com

WIELAND Dental +Technik GmbH & Co. KG

Schwenninger Straße 13, 75179 Pforzheim, Germany

Fon +49 72 31/37 05-0, Fax +49 72 31/35 79 59