Ivoclar Vivadent CosmoPost User Manual

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CosmoPost

Instructions for Use

Table of Contents

3 CosmoPost – Basics ﬁrst

4 Notes for dentists and dental technicians 4 Indication 4 Contraindication

5 IPS Empress Cosmo Ingot 5 Indication 5 Contraindication

6 Description of the assortments 6 CosmoPost 8 IPS Empress Cosmo Ingot

9 Instructions for Use for dentists

9 Post length and preparation 10 Cementation 11 1. Indirect method 11 A. Preparation of the tooth / root canal 11 B. Fabrication of the build-up in the dental laboratory 11 C. Try-in of the post build-up 11 D. Conditioning of the post build-up 12 E. Cementation of the post build-up 12 F. Preparation and temporary restoration 13 G. Adhesive cementation of the restoration 14 Example of the indirect method 15 2. Direct method 15 A. Preparation of the tooth / root canal 16 B. Direct modelling of the build-up 16 C. Preparation and temporary restoration 16 D. Adhesive cementation of the restoration

17 Instructions for Use for dental technicians 17 IPS Empress Cosmo Ingot – Instructions for Use 17 Model fabrication 18 Preparation for modelling 18 Modelling 19 Spruing 19 Investment 20 Preheating 20 Pressing 21 Divestment 21 Removing the pressed object / Finishing

CosmoPost – Basics ﬁrst

Make sure that… The following applications are absolutely

contraindicated:

… the length of the post within the canal at least corresponds to the coronal length of the clinical crown,

Using the 1.4-mm CosmoPost for the following teeth: FDI designation: 13, 11, 21,23, 33, 43 ADA designation: 6, 8, 9,11, 22, 27

… the CosmoPost is not provided with retention grooves under any circumstances,

… the impression post does not come into contact with the impression tray.

Application for patients with a deep overbite, bruxism or suspected bruxism.

If there is insufficient supergingival dental hard tissue.

The supergingival dental hard tissue must measure at least 2–3 mm. In other words, the preparation margin must be approx 2–3 mm below the build-up.

at least 2–3 mm

prosthetic crown

post build-up

root canal post (CosmoPost)

apical root ﬁlling

Contraindication

CosmoPost – Notes for dentists

and dental technicians

Indication

Since CosmoPost is a ceramic post system, the main indication is the aesthetically important anterior region, both in the maxilla and the mandible.

l Anterior region

– 1.4-mm CosmoPost

Use:

1. In the maxilla: only for the lateral incisors, ie, teeth 12 and 22 (FDI); teeth 7 and 10 (ADA).

2. In the mandible: for the central and lateral incisors, ie, teeth 32 to 42 (FDI); teeth 23 to 26 (ADA).

Any other application is contraindicated and may compromise the success of the prosthetic restoration.

– 1.7-mm CosmoPost

Use:

The 1.7-mm CosmoPost is used for those teeth, for which the diameter of the coronal part of the root or the coronal endodontium clinically indicates a 1.7-mm root canal post. These teeth are usually the four canines and the central incisors in the maxilla.

II Posterior region

– Depending on the clinical situation, both the 1.7-mm and

1.4-mm CosmoPost can be used in the posterior region. Generally, the 1.4-mm post is used for maxillary and mandibular premolars, while the 1.7-mm post is used for molars (distal canal in the mandible, palatal canal in the maxilla).

Important

– The indications and working parameters must be

observed at all times

– The CosmoPost must not be adjusted by grinding,

tapered, or provided with retention grooves, since such measures may result in predetermined breaking points on the post.

– The post must not be blasted with aluminium oxide

(Al

2O3

). The surface of the post has already been

roughened.

The use of the 1.4-mm CosmoPost is absolutely contraindicated for the marked teeth (FDI: 13, 11, 21, 23, 33,

43) (ADA: 6, 8, 9, 11, 22, 27).

Additional contraindications are as follows: – Use of the CosmoPost for patients suffering from bruxism

or suspected bruxism

– Deep overbite

Important

If the deﬁned preparation (residual dentin) is not possible or one of the above contraindications is present, a metal post must be used, since the risk of a post fracture is clearly increased. A fractured post most often results in the extraction of the root, since the post is virtually impossible to remove.

– Less than 2–3 mm supergingival dental hard tissue

– Circular isogingival damage – Allergy to any of the ingredients

Indication

Core build-up in combination with the CosmoPost (zirconium oxide root canal post).

Contraindication

– Neither metal alloys and metal-ceramics (eg IPS Classic,

IPS d.SIGN) nor all-ceramic layering materials (eg IPS Empress, IPS Empress 2, IPS Eris for E2) may be fused to the CosmoPost (root canal post).

– Conventional IPS Empress ingots cannot be used in

combination with the IPS Empress Cosmo Ingot.

– If patients are known to be allergic to any of the

ingredients, the IPS Empress Cosmo Ingot should not be used.

IPS Empress Cosmo Ingot

Description of the assortments

CosmoPost

Description of the material

The CosmoPost is a parallel-conical root canal post made of zirconium oxide (ZrO

) ceramic, which consists of ZrO2, HfO2,

2O3

and Al2O3. The CosmoPost is available in two different sizes (1.4 mm and 1.7 mm in diameter).

Delivery form

CosmoPost Kit

CosmoPost Kit mit Rohli

CosmoPost Kit including ingots

3 CosmoPosts, 1.4 mm diameter 3 CosmoPosts, 1.7 mm diameter 3 impression posts, 1.4 mm diameter 3 impression posts, 1.7 mm diameter 1 root canal bur, 1.4 mm diameter (red) 1 root canal bur, 1.7 mm diameter (black)

The impression posts can also be used as temporary posts in provisional restorations.

5 CosmoPosts, 1.4 mm diameter

5 CosmoPosts, 1.7 mm diameter

Reﬁlls

5 impression posts, 1.4 mm diameter

5 impression posts, 1.7 mm diameter

10 IPS Empress Cosmo Ingots

1 root canal bur, 1.4 mm diameter

1 root canal bur, 1.7 mm diameter

Rotary instruments (2 root canal burs)

– 2 root canal burs (1.4 mm and 1.7 mm diameter) for the

standardized preparation of root canals

The rotary instruments are also available as Reﬁll.

IPS Empress Cosmo Ingot

Description of the material

The IPS Empress Cosmo Ingot is made of IPS Empress glassceramic containing zirconium oxide. It is optimally coordinated with the CosmoPost. The main components are SiO

and ZrO2. Additionally, the

material contains: Al

2O3

, P2O5, Li2O, Na2O, K2O, F and

pigments.

Delivery form

The IPS Empress Cosmo Ingot is offered in vials containing ten ingots.

Instructions for Use for dentists

Length of the post and preparation

It is essential that

During the preparation of the remaining tooth structure and the contouring of the build-up, make sure that the build-up is provided with sufficient retentive surface around the entrance of the root canal: incorporation of an anti-rotation device in the form of a canal inlay or retention box or inclusion of a stable dentin lamella.

When preparing the core, the preparation margin must be located at least 2–3 mm below the build-up in the residual dentin.

The preparation margin must be located 2–3 mm below the build-up.

– the coronal length of the post within the canal at least

corresponds to the coronal length of the prosthetic restoration;

– the post demonstrates adequate mechanical friction in

the canal.

Important

If this procedure is not possible, a metal post must be used, since the risk of a post fracture is clearly increased. A fractured post most often results in the extraction of the root, since the post is virtually impossible to remove.

The adequate length of the post within the canal must be observed. Prof. Dr. Dipl.-Ing. E.-J. Richter,Würzburg, Germany.

The length of the post within the canal must at least correspond to the coronal length of the prosthetic restoration.

Adequate length is particularly important for maxillary anteriors, since the shearing forces in this area are very high and may result in a loss of retention of the post build-up.

at least 2–3 mm

prosthetic crown

post build-up

root canal post (CosmoPost)

apical root ﬁlling

Cementation

Generally, we recommend the adhesive cementation technique for incorporating the CosmoPost. The chemicophysical bond generated by adhesive cementation increases the retentive force. If conventional cements are used, an adequate retention surface is particularly important. This is achieved if friction is present even before cementation and the post demonstrates adequate length and accuracy of ﬁt. We recommend a dual-curing composite cement (eg Variolink II System, Ivoclar Vivadent) for cementing the post and the post build-up. Self-curing composite cements and conventional cements (phosphate, glass ionomer, hybrid ionomer cements) may also be used. In such cases, the setting time of the cement has to be observed before work may proceed.

The Variolink II System is offered together with either the Syntac Classic or Excite DSC bonding agent.

Procedure with the Variolink II luting composite system

Mix the selected shade (base paste) with the desired viscosity (catalyst paste). The mixed Variolink II is dual-curing, ie, the polymerization of the surface areas is initiated with blue light. In deeper areas, chemical polymerization takes place. For the cementation of root canal posts, we recommend using the low-viscosity catalyst, due to its ﬂow properties. The shade is generally not decisive for the cementation of root canal posts. Nevertheless, the 6 shades offer ample possibilities of meeting the requirements of the individual clinical situation. For further information, please refer to the Instructions for Use of the Variolink II System and the following directions.

1. Indirect method

Important

In the indirect method, the impression posts allow you to take impressions quickly and easily. In addition, you can use them as temporary posts in provisional restorations.

Observe safety precautions when working with hydroﬂuoric acid.

A. Preparation of the tooth / root canal

If luting composites (eg Variolink II System) are used, the application of a hydrophilic dentin primer in the canal is recommended to facilitate the adaptation of the composite to the canal walls. We recommend using the components of the Syntac Classic or Excite DSC dentin bonding systems in combination with Variolink II.

– Remove the coronal part of the root ﬁlling using the root

canal reamer. Stop about 4 mm from the apex (eg GatesGlidden or Peeso from Brasseler).

– Select the suitable post size (observe the above indications

and contraindications).

– Prepare the canal lumen with standardized CosmoPost root

canal burs.

– Try in the impression post. Make sure that the post ﬁts

tightly in the canal without being able to move. – Prepare the remaining tooth structure. – No undercuts – A deﬁned insertion path of the core build-up must be

observed in remaining dentition. – Prepare an inlay cavity in the pulp chamber. – Place a retraction cord if necessary. – Take an impression of the core including the impression

post with an addition cross-linked impression material,

using the double mix or single phase technique. – Take an impression of the antagonist jaw in order to

determine the coronal height of the build-up. – Fabricate a resin temporary with the help of the impression

post.

Important: The tooth should not be subjected to masticatory or parafunctional loading while the temporary restoration is in place.

B. Fabrication of the build-up in the dental laboratory

Provide the dental technician with clear instructions regarding the fabrication of the build-up (occlusal distance to the antagonist, circular chamfer, convergence of the buildup, etc). The root post is supplied in sandblasted form and should not be additionally prepared in the dental laboratory. After divesting the post and the build-up, only the build-up should be sandblasted. The Instructions for Use for dental technicians provide a detailed description of the fabrication of the post build-up.

C. Try-in of the post build-up

– Remove the temporary and clean the core, eg with a

polishing brush and pumice or prophylactic paste (eg

Proxyt). – Try in the post build-up. – The post build-up should be positioned in the root canal in

its deﬁned position without leaving any visible gaps.

D. Conditioning of the post build-up

– Condition the entire ceramic build-up with hydroﬂuoric

acid (IPS Ceramic Etching Gel): – Apply the gel with a brush and let it react for 1 minute.

Rinse with water and dry. If the hydroﬂuoric acid is

accidentally spilled on the post, the quality of the post is

not compromised. – Silanize the contact surface of the ceramic build-up with

Monobond S. Apply the liquid with a brush and let it react

for 1 minute. Blow off excess. – Apply Heliobond on the contact surface of the build-up

using a brush. Disperse with blown air. Do not light cure. – Store the conditioned build-up in a container protected

from light (eg Vivapad with cover).

Important

The Variolink II catalyst must be refrigerated, since storage at room temperature compromises the quality of the material. Nevertheless, Variolink II must be applied at room temperature, otherwise the working time (setting time) of the material is extended by approx 1 minute. The behaviour of the material during light-curing does not depend on the storage temperature.

Important

– Use only eugenol-free cements (eg Provilink), as eugenol

may inhibit the polymerization of the luting composite

– When using resin-based temporary cements (eg

Provilink), isolate the core with Vaseline, to remove the temporary without any problems.

E. Cementation of the post build-up

– Place a retraction cord. – Rinse the root canal (eg 5% sodium hypochloride) and dry

with paper points.

– Etch the root canal with 37% phosphoric acid (eg Total

Etch) for 10–15 seconds, rinse and dry with paper points. Etching is optional when using Syntac Classic, but compulsory when using Excite DSC.

When using Syntac Classic:

– Wet the canal walls with Syntac Primer using a brush,

respectively Endo Brush. Let the material react for

15 seconds. – Dry the canal with paper points. – Wet the canal walls with Syntac Adhesive using a brush,

respectively Endo Brush. Disperse with blown air and let

react for 10 seconds. – Dry the canal with paper points.

When using Excite DSC:

– Etch as described above. – Using an endodontic brush, wet the canal walls with

Excite DSC for 15 seconds. – Dry the canal with paper points.

Cementation:

– Mix Variolink II base and catalyst in a 1:1 ratio. Apply this

mixture to the post and the contact surface of the build-up

and place the post build-up in the canal. The working time

of Variolink II is approx 4 minutes as of the beginning of

mixing (at 37 °C / 98 °F). – Remove excess cement with a suitable brush. Use a ﬂat

condenser to keep the post build-up in place. – Continue applying slight pressure to the post build-up and

cure Variolink II in the area of the cement border with a

polymerization light for 60 seconds each from the buccal

and lingual and from the mesial and distal, if possible.

Given the translucency of the dentin and the post build-

up, the composite can be light cured up to a depth of

approx 2–3 mm.

F. Preparation and temporary restoration

– Prepare the build-up – Take impression – Place temporary restoration – Make sure that the preparation margin is located approx

2–3 mm below the build-up.

G. Adhesive cementation of the restoration

Preparation of the core and the remaining tooth structure: – Remove the temporary and clean the core with a polishing

brush and pumice or with prophylactic paste (eg Proxyt). – Ensure adequate relative isolation. Prevent contamination

with saliva. If possible, use a rubber dam. – Etch enamel areas with 37% phosphoric acid (eg Total

Etch) for 15–30 seconds. Rinse with water spray and dry.

Depending on the dentin bonding system used, the dentin

may also be etched. Etching is optional when using Syntac

Classic, but compulsory when using Excite DSC. – Apply Monobond S on the ceramic build-up and let it react

for 60 seconds. Distribute with blown air.

When using Syntac Classic:

– Apply Syntac Primer on the enamel and dentin, let it react

for 15 seconds and blow dry with air. – Apply Syntac Adhesive on the enamel and dentin, let it

react for 10 seconds and blow dry with air. – Apply Heliobond on the enamel, dentin and build-up and

disperse to a thin layer with blown air; do not light-cure.

When using Excite DSC:

– Etch with 37% phosphoric acid (eg Total Etch): enamel for

15–30 seconds, dentin for 10–15 seconds. Then, rinse and

dry. – Apply Excite DSC on the enamel, dentin and the post

build-up, gently agitate the adhesive onto the surfaces for

15 seconds and disperse it to a thin layer using an air

syringe; do not light-cure .

Preparation of the restoration

Condition the IPS Empress restoration according to the instructions and insert with Variolink II. For a detailed description of this procedure, please refer to the Instructions for Use / Technique Guide of the Variolink II System.

Example of the indirect method

Anterior trauma affecting teeth 23, 22, 21, and 11 (FDI) (ADA: 11, 10, 9, 8)

Standardized canal preparation with root canal burs*

Permanently incorporated ceramic build-ups with ComoPost.The preparation margin is located approx 2–3 mm below the build-up.

Situation after the incorporation of the all-ceramic crowns (IPS Empress).

Preparation for the impression using impression posts**

Pre-drilling with a root canal reamer (eg Gates-Glidden or Peeso from Brasseler)

* It must be noted that a 1.7-mm root bur was used for pre-drilling in tooth 23, 21 and 11(FDI) (ADA: 11, 9, and 8),while a 1.4-mm root bur was used for tooth 22 (FDI) (ADA: 10).

** The original picture has been modiﬁed to show the impression posts.

Clinical pictures courtesy of

Dr D Edelhoff,Aachen, Germany

The root canal post is supplied sandblasted. Further preparation or silanization is unnecessary. If the root post is contaminated, for example, with saliva during the try-in procedure, it should be cleaned with commercially available 37% phosphoric acid (eg Total Etch). Apply the gel to the CosmoPost, rinse and dry.

Retention grooves must not be applied to the CosmoPost under any circumstances.

2. Direct method

Important

The post must not be adjusted by grinding under any circumstances. Retention grooves must not be applied. Such measures may result in predetermined breaking points on the post. However, shortening the post with suitable diamond burs is possible.

Important

Variolink II catalyst must be refrigerated, since storage at room temperature compromises the quality of the material. Nevertheless, Variolink II must be applied at room temperature, otherwise the working time (setting time) of the material is extended by approx 1 minute. The behaviour of the material during light-curing does not depend on the storage temperature.

A. Preparation of the tooth / root canal

If luting composites (eg Variolink II System) are used, the application of a hydrophylic dentin primer in the canal is recommended to facilitate the adaptation of the composite to the canal walls. We recommend using the components of the Syntac Classic or Excite DSC dentin bonding systems in combination with Variolink II.

– Remove the coronal part of the root ﬁlling using the root

canal reamer (e.g. Gates-Glidden or Peeso from Brasseler). Stop about 4 mm before the apex.

– Select the adequate size of the post (observe the above

indications and contraindications). – Prepare the canal lumen with standardized instruments. – Try in the post. – Ensure adequate relative isolation. Prevent contamination

with saliva. If possible, use a rubber dam. – Rinse the root canal (eg 5% sodium hypochloride) and dry

with paper points. – Etch the root canal with 37% phosphoric acid (eg Total

Etch) for 10-15 seconds. Rinse and dry with paper points.

Etching is optional when using Syntac Classic, but

compulsory when using Excite DSC.

When using Syntac Classic:

– Wet the canal walls with Syntac Primer using a brush. Let

the material react for 15 seconds. – Dry the canal with paper points. – Wet the canal walls with Syntac Adhesive using a brush.

Disperse the adhesive with blown air and let it react for

10 seconds. – Dry the canal with paper points.

When using Excite DSC:

– Etch as described above. – Wet the canal walls with Excite DSC for 15 seconds using

an endodontic brush. – Dry the canal with paper points.

Cementation:

– Mix Variolink II base and catalyst in a 1:1 ratio and apply

the mixture to the root canal post. Insert the post into the

root canal with pumping movements to prevent air from

being trapped. The working time of Variolink II is approx

4 minutes as of the beginning of mixing (at 37 °C / 98 °F). – Remove excess cement in the coronal region with a brush.

Apply slight pressure on the post to hold it in place in the

canal. – Continue applying slight pressure on the post and cure

Variolink II in the area of the cement border with a

polymerization light for 60 seconds each from the buccal

and oral.

B. Direct modelling of the build-up

Model the build-up on the cemented root canal post using a suitable posterior composite (eg Tetric Ceram). Apply layers of 2–3 mm only. Light-cure each layer for 60 seconds.

Example of the direct method

Starting point: Partial loss of the remaining coronal tooth structure Situation after crown preparation CosmoPost in situ

C. Preparation and temporary restoration

– Prepare the build-up. The preparation margin must be

located 2–3 mm below the build-up in the residual dentin. – Take the impression. – Place the temporary restoration.

D. Adhesive cementation of the restoration

Preparation of the core and the remaining tooth structure: – Remove the temporary and clean the core, eg with a polis-

hing brush and pumice or prophylactic paste (eg Proxyt).

– Ensure adequate relative isolation. Contamination with sali-

va must be prevented.

– Etch enamel areas with 37% phosphoric acid (eg Total

Etch) for 15–30 seconds. Then rinse and dry. Depending on the dentin bonding system used, the dentin may also be etched. Etching is optional when using Sytnac Classic, but compulsory when using Excite DSC.

– Silanize the composite build-up: Apply Monobond S on the

build-up and let it react for 60 seconds. Disperse with blown air.

When using Syntac Classic:

– Apply Syntac Primer on the enamel and dentin. Let it react

for 15 seconds and blow dry with air.

– Apply Syntac Adhesive on the enamel and dentin. Let react

for 10 seconds and blow dry with air.

– Apply Heliobond on the enamel, dentin and build-up and

blow to a thin layer; do not light-cure.

When using Excite DSC:

– Etch with 37% phosphoric acid (eg Total Etch): enamel for

15–30 seconds, dentin for 10-15 seconds. Then, rinse and dry.

– Apply Excite DSC on the enamel, dentin and build-up and

agitate it onto the surfaces for 15 seconds. Disperse to a thin layer using an air syringe; do not light-cure.

Preparation of the restoration:

Important

– Use only eugenol-free cements (eg Provilink, since

eugenol may inhibit the polymerization of the luting composite.

– When using resin-based temporary cements (eg

Provilink), isolate the core with Vaseline to prevent the cement from chemically bonding with the composite build-up.

IPS Empress Cosmo Ingot – Instructions for Use

The dentist takes an impression using the impression posts and passes the impression on to the dental laboratory.

Model fabrication

– The dental technician must check the accurate ﬁt of the

impression post in the impression by exerting slight pressure on the post using a suitable instrument.

– Isolate the impression post protruding from the impression

with IPS Empress die material separating liquid. This prevents the plaster or the model material from bonding

with the impression post. – Fabricate the master model as usual. – Make sure that the master model is removed from the

impression in the direction of insertion of the impression

posts. – Check the accuracy of ﬁt of the impression post on the

completed model.

Instructions for Use for dental technicians

Preparation for modelling

– Remove the die from the model. Using pliers, carefully

remove the impression post from the master model by slightly rotating it.

– Now, prepare the die for the spacer or the isolation and

mark the preparation margin. – It is advisable to use a sealant (eg Margidur from Benzer). – Apply two layers of the spacer (total layer thickness

approx. 15–20 mm) in the root cavity after the sealant has

set (see ﬁg).

Modelling

– Modelling must be carried out with dental wax that burns

without leaving residue.

– During modelling, the subsequent preparation has to be

kept in mind. For shoulder preparations, the build-up should end approx 1 mm before the preparation margin.

– Check the position of the CosmoPost in the die by slightly

rotating it. Carefully remove excess spacer.

– Isolate the die after curing of the Spacer (eg Die-Lub from

Dentaurum) and thoroughly disperse with blown air. – Insert a CosmoPost of the correct size.

Important

The CosmoPost must be used in the length supplied. It may only be shortened to a functional length once the individual build-up has been pressed to it. This has the advantage that the CosmoPost is stable in the investment material. In this way, pressing errors can be prevented. Furthermore, when working with very small pieces, make sure to invest a dummy object together with the actual build-up.

Spruing

– Remove the modelled post build-up from the die and

remove any interfering areas. If necessary, carefully blow

off excess isolation material. – Place the sprue in the direction of ﬂow of the ceramic at

the thickest spot (use a round wax proﬁle, 2.5–3 mm dia-

meter, depending on the size of the build-up).

Investment

Invest the pieces with the IPS Empress 2 Special Investment Material or the IPS Empress 2 Speed Investment Material.

Investment with IPS Empress 2 Special Investment Material

Important

The pieces should be at least 3 mm apart. The distance of at least 10 mm between the objects to be pressed and the investment ring must be observed. Excess isolation material must be removed. Spruing must be carried out taking the direction of ﬂow of the ceramic into account. A dummy object must be invested together with very small individual pieces.

Important

Do not use debubblizers. Observe the corresponding Instructions for Use of the IPS Empress 2 Special Investment Material or IPS Empress 2 Speed Investment Material. The IPS Empress Special Investment Material for the layering technique cannot be used together with the Cosmo Ingot. Observe the mixing times. Check the correct ﬁt of the paper ring around the ring base and the ring gauge.

Indication Concen- Small ring (100 g) Large ring (200 g)

tration special liquid : special liquid :

distilled water distilled water

Preprosthetic 50–60% 11 ml : 11 ml (50%) 22 ml : 22 ml (50%) build-up in 13 ml : 9 ml (60%) 26.5 ml : 17.5 ml (60%) combination with the CosmoPost

Investment with IPS Empress 2 Speed Investment Material

Indication Concen- Small ring (100 g) Large ring (200 g)

tration special liquid : special liquid :

distilled water distilled water

Preprosthetic 40–50% 11 ml : 16 ml (40%) 22 ml : 32 ml (40%) build-up in 13.5 ml : 13.5 ml (50%) 27 ml : 27 ml (50%) combination with the CosmoPost

When using the IPS Empress 2 Speed Investment Material make sure to switch on the preheating furnace on time.

The investment material contains quartz powder. Avoid inhalation of grinding dust because of the risk of subsequent lung damage (silicosis).

Preheating

Parameters

Preheat the investment ring, including the AlOx plunger, but

without the ingot, in a conventional preheating furnace.

Please refer to the Instructions for Use for the IPS Empress 2 Special Investment Material or the IPS Empress 2 Speed Investment Material for the preheating parameters.

Given the low press temperature required, the IPS Empress Cosmo Ingot is not preheated together with the investment ring. The room temperature ingot is placed into the investment ring when preheating is completed. The material is then pressed in the EP600 or EP500 press furnace.

Pressing

Switch the furnace on in good time. Calibrate the furnace regularly. Please see the corresponding information regarding the calibration of the furnace in the Instructions for Use of the Temperature Checking Set 2 of the EP 500 and the Automatic Temperature Checking Set 1 of the EP 600/EP 600 Combi.

Remove the investment ring from the preheating furnace and place the cold IPS Empress Cosmo Ingot in the ring.

Next, position the AlOx plunger.

Important

Given the similar coefficients of thermal expansion of the IPS Empress Cosmo Ingots and the AlOx plunger, make sure to use a clean or new AlOx plunger to prevent the pressed material from sticking to the AlOx plunger.

Important

– Carefully remove investment material and ceramic

residue from the AlOx plunger after each use. Always

keep the marked side of the AlOx plunger upwards. – Clean the furnace regularly. – If desired, preheating in conjunction with the

IPS Empress 2 Special Investment Material (but not in

conjunction with the IPS Empress 2 Speed Investment

Material) may also be performed overnight. Since the

investment material may be prone to crystallization,

however, preheating over the weekend should be

avoided.

Insertion of the cold ingot in the investment ring

Insertion of the pre-heated AlOx plunger in the investment ring

Pressing in the EP 600

Select Program 4 (Cosmo)

Pressing in the EP 500

Pressing temperature: 900 °C/1652 °F Holding time: 10 min Heating rate: 60 °C/108 °F min Post pressing time: 0 Pressing power (indicator): 5 bar Vacuum on: 500 °C/932 °F Vacuum off: 900 °C/1652 °F Stand-by temperature: 700 °C/1292 °F

11 11

700°C

1292°F

60°C

108°F

900°C

1652°F

10 10

500°C 932°F

900°C

1652°F

Pressure

5 bar 5 bar

– –

→

Pressed post build-up

Cutting

Carefully place the divested post build-up on the master model.

Divestment

(at the earliest after approx 60 minutes)

– After cooling, the investment cylinder may show cracks.

These cracks developed (immediately around the AlOx plunger) during cooling as a result of the different CTEs of the various materials (AlOx plunger, investment material and pressed materials). They do not compromise the result of the pressing cycle.

– Once the pressing procedure has been completed,

divesting is carried out according to the usual IPS Empress method (blasting with Ivoclar Vivadent special jet medium at 1 bar pressure).

Removing the pressed object / Finishing

Important

Extensive grinding may produce microcracks in the ceramic framework as a result of local overheating. Consequently, grinding should be reduced to a minimum.

Cutting of the CosmoPost.

Various views of the post build-up on the model.

Carefully cut the projecting ComoPost.

Finally, the pressed post build-up is ﬁnished with ﬁne diamonds.

Important

– The CosmoPost does not have to be etched with

IPS Ceramic Etching Gel. The post demonstrates a microstructure that corresponds to that of etched ceramic.

– The contact surface (Cosmo Ingot) of the post build-up

is conventionally etched with IPS Ceramic Etching Gel.

Ivoclar Vivadent AG

Bendererstrasse 2 FL-9494 Schaan Liechtenstein Tel. +423 235 35 35 Fax +423 235 33 60 www.ivoclarvivadent.com

Ivoclar Vivadent Pty. Ltd.

1 – 5 Overseas Drive P.O. Box 367 Noble Park,Vic. 3174 Australia Tel. +61 3 979 595 99 Fax +61 3 979 596 45 www.ivoclarvivadent.com.au

Ivoclar Vivadent GmbH

Bremschlstr. 16 Postfach 223 A-6706 Bürs Austria Tel. +43 5552 624 49 Fax +43 5552 675 15 www.ivoclarvivadent.com

Ivoclar Vivadent Ltda.

Rua Maestro João Gomes de Araújo 50; Salas 92/94 Sao Paulo, CEP 02332-020 Brazil Tel. +55 11 69 59 89 77 Fax +55 11 69 71 17 50 www.ivoclarvivadent.com

Ivoclar Vivadent Inc.

2785 Skymark Avenue, Unit 1 Mississauga Ontario L4W 4Y3 Canada Tel. +1 905 238 57 00 Fax +1 905 238 5711 www.ivoclarvivadent.us.com

Ivoclar Vivadent Marketing Ltd.

Rm 603 Kuen Yang International Business Plaza No. 798 Zhao Jia Bang Road Shanghai 200030 China Tel. +86 21 5456 0776 Fax. +86 21 6445 1561 www.ivoclarvivadent.com

Ivoclar Vivadent Marketing Ltd.

Calle 134 No. 13-83, Of. 520 Bogotá Colombia Tel. +57 1 627 33 99 Fax +57 1 633 16 63 www.ivoclarvivadent.com

Ivoclar Vivadent SAS

B.P. 118 F-74410 Saint-Jorioz France Tel. +33 450 88 64 00 Fax +33 450 68 91 52 www.ivoclarvivadent.fr

Ivoclar Vivadent GmbH

Dr. Adolf-Schneider-Str. 2 D-73479 Ellwangen, Jagst Germany Tel. +49 (0) 79 61 / 8 89-0 Fax +49 (0) 79 61 / 63 26 www.ivoclarvivadent.de

Ivoclar-Vivadent Marketing Ltd

114, Janki Centre Shah Industrial Estate Veera Desai Road, Andheri (West) Mumbai 400 053 India Tel. +91 (22) 673 0302 Fax. +91 (22) 673 0301 www.ivoclarvivadent.ﬁrm.in

Ivoclar Vivadent s.r.l.

Via dell’Industria 16 I-39025 Naturno (BZ) Italy Tel. +39 0473 67 01 11 Fax +39 0473 66 77 80 www.ivoclarvivadent.it

Ivoclar Vivadent S.A. de C.V.

Av. Mazatlán No. 61, Piso 2 Col. Condesa 06170 México, D.F. Mexico Tel. +52 (55) 55 53 00 38 Fax +52 (55) 55 53 14 26 www.ivoclarvivadent.com.mx

Ivoclar Vivadent Ltd

12 Omega St, Albany PO Box 5243 Wellesley St Auckland, New Zealand Tel. +64 9 914 9999 Fax +64 9 630 61 48 www.ivoclarvivadent.co.nz

Ivoclar Vivadent Polska Sp. z.o.o.

ul. Jana Pawla II 78 PL-01-501 Warszawa Poland Tel. +48 22 635 54 96 Fax +48 22 635 54 69 www.ivoclarvivadent.pl

Ivoclar Vivadent S.A.

c/Emilio Muñoz, 15 Esquina c/Albarracín E-28037 Madrid Spain Tel. + 34 91 375 78 20 Fax + 34 91 375 78 38 www.ivoclarvivadent.com

Ivoclar Vivadent AB

Dalvägen 16 S-169 56 Solna Sweden Tel. +46 8 514 93 930 Fax +46 (0) 8 514 93 940 www.ivoclarvivadent.se

Ivoclar Vivadent UK Limited

Meridian South Leicester LE19 1WY United Kingdom Tel. +44 116 265 40 55 Fax +44 116 265 40 59 www.ivoclarvivadent.co.uk

Ivoclar Vivadent, Inc.

175 Pineview Drive Amherst, N.Y. 14228 USA Tel. +1 800 533 6825 Fax +1 716 691 2285 www.ivoclarvivadent.us.com

Dentigenix Inc.

551 N. 34th Street Seattle, WA 98103 USA Tel. +1 425 822 0902 Fax +1 425 822 3101 www.dentigenix.com

Ivoclar Vivadent – worldwide

Date information prepared: 05/2003

These materials have been developed solely for use in dentistry. Processing should be carried out strictly according to the Instructions for Use. Liability cannot be accepted for damages resulting from failure to observe the Instructions or the stipulated area of application. The user is responsible for testing the materials for their suitability and use for any purpose not explicitly stated in the Instructions. These regulations also apply if the materials are used in conjunction with products of other manufacturers. Descriptions and data constitute no warranty of attributes and are not binding.

562902/0503/e/1/BVD

Ivoclar Vivadent CosmoPost User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual