PDF-Manual_Milling_of_IPS-emax_in_Zenotec-CAM/2014-10-28/Rev.001 www.wieland-dental.de

Milling of IPS e.max CAD for Zenotecin Zenotec CAM

Z E N O T E C C A M V 3

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Z E N O T E C C A M V 3

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1 USING IPS E.MAX CAD FOR ZENOTEC IN ZENOTEC CAM ......................................................................... S. 3

1.1 Creating the IPS e.matrix® multiholder in Zenotec CAM ....................................................................................... S. 3

1.2 Loading an IPS e.max CAD for Zenotec block into the IPS e.matrix ....................................................................... S. 5

1.3 Importing and preparing the milling file ............................................................................................................... S. 6

1.3.1 Painting the occlusal surface with the Auto function ..................................................................................... S. 8

1.3.2 Manually painting the occlusal surface ......................................................................................................... S. 8

1.3.3 Defining the cavity / insert direction with the Auto function ......................................................................... S. 9

1.3.4 Defining the cavity / insert direction manually .............................................................................................. S. 9

1.3.5 Handling bridge files ................................................................................................................................... S. 12

1.4 Nesting .............................................................................................................................................................. S. 16

1.4.1 Block rotation by 90° .................................................................................................................................. S. 17

1.5 Calculation & simulation ...................................................................................................................................... S. 18

1.6 Milling examples ................................................................................................................................................. S. 20

1.7 Generating the NC file ........................................................................................................................................ S. 22

Table of Contents

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1 Using IPS e.max CAD for Zenotec in Zenotec CAM

1.1 Creating the IPS e.matrix® multiholder in Zenotec CAM

The RFID label of IPS e.max CAD for Zenotec Refi lls is used for creating the IPS e.matrix multiholder in Zenotec CAM.

Make sure that no IPS e.matrix multiholder is loaded in the main dialog of Zenotec CAM before you place the RFID label on the

RFID reader. It might be necessary to load a disc into the main dialog fi rst.

Subsequently, place the RFID label on the RFID reader. Select the «Color group name» (A) and the «Color name» (A) for the

corresponding material and confi rm the message asking whether the blocks should be included in the software data base with

«OK» (B). The material blocks are stored in the data base.

Note:

The RFID labels must remain on the reader during the entire reading process.

(A)

(B)

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Next, select the desired block (C) and confi rm by pressing the button «Create new Project» (D).

Subsequently, select the IPS e.matrix multiholder as the «Disc holder» (E):

"Wieland 6x S2" for Zenotec select with material changer

"Wieland 4x S1" for Zenotec select without material changer

To distinguish between different IPS e.matrix multiholders in Zenotec CAM, an individual name can be assigned under

«Name» (F).

Save the IPS e.matrix multiholder by clicking «Create» (G).

(C)

(E)

(F)

(D)

(G)

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The IPS e.matrix multiholder is shown in the main dialog.

1.2 Loading an IPS e.max CAD for Zenotec block into the IPS e.matrix

To load an IPS e.max CAD for Zenotec block into the IPS e.matrix multiholder, click the blue point (A) in the

IPS e.matrix multiholder.

(A)

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Select the desired block size and block shade – e.g. IPS e.max CAD C14 – in the tree structure (B) and confi rm your selection

with «Place» (C).

(B)

(C)

1.3 Importing and preparing the milling fi le

Import a fi le into the work preparation of the Zenotec CAM software using the «Import» button (A). Assign the machine (B), the

material (C) and the indication (D). If this information is not supplied for an output format of the CAD software (e.g. STL), then

the buttons are shown in red.

If the machine, material and indication have already been defi ned, the buttons are shown in yellow. Select the milling strategy

for the restoration type under «Mill settings» (E). Depending on the output format of the CAD software, the insert directions and

the painting of occlusal surfaces must be set for the respective strategy.

For the STL output format, the information regarding cavities / insert directions has to be defi ned.

Note:

In the Wieland Zenotec CAM 4.0 output format (included in all Wieland Zenotec scanners), the information on cavities and insert directions is already included. However, please check this information again.

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For full-contour crowns, for which you would like to use the 0.5-mm bur for the occlusion, select the strategy (F):

"CER 3_2_1_0,5 Crown individual Occlusion_V2"

For anterior teeth and crowns without detailed fi ssures, select the strategy (F):

"CER 3_2_1 Crown Standard_V2"

For copings, select the strategy (F):

"CER 3_2_1 Coping Standard_V2"

After selection of the milling strategy, a red button (G) will advise you if the strategy requires painting or the setting of insert

directions.

(F)

(A) (B) (C) (D) (E)

(G)

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1.3.1 Painting the occlusal surface with the Auto function

Activate the «Automatic» button (B) in the menu item «Color milling – fi ssure» (A) and confi rm with «OK back» (C).

1.3.2 Manually painting the occlusal surface

Activate the «Manually» button (B) in the menu item «Color milling – fi ssure» (A) and paint the occlusal surface by pressing the

SHIFT key and the left mouse button. You can vary the diameter of the painter function by turning the mouse wheel while pres-

sing SHIFT.

Subsequently, confi rm with «OK back» (C).

(A)

(A)

(B)

(B)

(C)

(C)

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1.3.3 Defi ning the cavity / insert direction with the Auto function

Activate the «Auto cavity» button (B) in the menu item «Directions» (A). Confi rm with «OK back» (C). If the insert directions are

not recognized, add them manually (see Chapter 1.3.4).

1.3.4 Defi ning the cavity / insert direction manually

The insert directions can be manually defi ned in the menu item «Directions» (A). Click «Select curve» (B) and run the arrow over

the inner edge of the preparation margin (C) until a continuous yellow line appears. The insert direction is defi ned with the help

of this line.

Subsequently, confi rm with the left mouse button. Continue with «OK back» (D).

(A)

(A)

(B)

(B)

(C)

(C)

(D)

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Note:

If the insert direction is incorrectly defi ned, inaccuracies of fi t occur.

If no continuous curve is found due to a poor STL fi le, a curve can be generated with the button «Edge threshold» (F) or with the

help of a painter surface. For this purpose, select the painter colour, e.g. «Extra cement» (G), in the menu «Painter» (E) and paint

the inner cavity either with mouse clicks or manual painting. A defi ned curve is generated by the coloured cavity, which is used

for setting the insert direction.

If an insert direction (H) has been incorrectly defi ned, it can be adjusted using the sliders (I). Adjust the insert so that a direct view

into the cavity is possible.

(E)

(F)

(G)

(H) (I) (I)

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Note:

All buttons to be executed are highlighted in yellow.

This working step is complete once all insert directions are set and the painter surface has been marked.

«Save» (J) the milling job and approve it with «Release» (K).(J) (K)

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1.3.5 Processing IPS e.max CAD bridges

Import a bridge fi le (see Chapter 1.3).

(A)

(B)

Note:

Please observe the approved maximum span width (see IPS e.max CAD bridge brochure)!

Before selecting a milling strategy, verify the orientation of the bridge and adjust it, if necessary. Click «Edit object» (A) and then

«Align view» to display the orientation of the restoration (B).

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If the bridge is oriented at a slant (C), align it horizontally using the left mouse button. Only very few red areas (undercuts) should

be visible.

(C)

Confi rm the horizontally aligned bridge (D) with «OK» (E) and continue.

(D)

(E)

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Note:

If the strategy for full-contour bridges is selected, the occlusal surfaces must be manually and extensively painted in order to prevent milling tool fractures.

Subsequently, select the milling strategy under «Mill settings» (F):

For bridges with full-contour premolars, for which you would like to use the 0.5-mm bur for the occlusion, select the strategy:

"CER 3_2_1_0,5 Crown individual Occlusion_V2" (G)

For full-contour anterior bridges, bridge frameworks without full contours and bridges with full-contour premolars without

detailed fi ssures, use the strategy (F):

"CER 3_2_1 Crown Standard_V2" (H)

(F)

(G)(H)

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( I )(J)

Set the insert directions manually (see Chapter 1.3.4) or by using the Auto function (see Chapter 1.3.3).

Once the orientation is checked, the insert directions are set and the painter surface is marked, click «Save» (I) and approve the

milling job with «Release» (J).

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1.4 Nesting

Position the crown from the tooth browser within the generated block (A), mounted to the IPS e.matrix multiholder, using the

drag & drop function.

Note:

Nest the restoration as closely as possible to the block end to keep the milling time as short as possible and to ensure a suffi ciently stable connection to the holder.

The restoration is rotated by turning the mouse wheel. A 3-mm holding bar is automatically placed on the restoration.

You can change the height of the holding bar by double-clicking the holding bar and turning the mouse wheel.

Attach the holding bar to the longest surface of the restoration and the highest point of the tooth equator (B) to ensure optimum

processing of the tooth from top to bottom. The milling strategy has already been selected and is shown in window (C).

A modifi cation is not possible.

(C)

(A)

(B)

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1.4.1 Block rotation by 90°

If the height of the restoration exceeds the height of the block (A), you will be warned accordingly (B). You can then use another,

higher block or apply the block rotation function. Block rotation is only possible in case of minor size differences.

If you use the block rotation, confi rm the error message with «Ignore» (C).

Then, right-click the blue point and select «Rotate block by 90°» (D).

(A)

(B)

(C)

(D)

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Note when using block rotation:

If you use the block rotation in Zenotec CAM, make sure that the block is also mechanically clamped in the IPS e.matrix multiholder with a 90° rotation.

Observe the block tolerances!

For restorations which fi t into the block only just, despite block rotation, the next bigger block size should be selected for safety reasons.

The block is rotated by 90° (E). The restoration is within the block dimensions (F).

(E)

(F)

1.5 Calculation & simulation

After nesting, forward the restoration to the calculation using the «Milling» button (A).

(A)

Once the calculation is complete, the milling paths must be verifi ed. The milling simulation visualizes areas that cannot be milled.

Thus, any possible errors which may cause fi tting inaccuracies or milling tool fractures can be directly identifi ed and prevented.

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(B)

(C)

(E)

(D)

The simulation is started using the «Fast simulation» (C) or the green «Play» (D) button. The coloured residual material display

can be switched on with the button «Sim. deviation» (E).

To ensure a good accuracy of fi t, no red areas must be visible in the cavity area.

The milling paths and the individual milling steps (B) can be displayed or hidden by clicking the respective buttons.

Note:

The verifi cation of the milling path must be performed with utmost care and precision in order to prevent the occurrence of any problems!

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1.6 Milling examples

Figures 1 to 7 represent examples of how milling paths should not be designed.

Fig. 1 Fig. 3

Fig. 5

Fig. 7

Fig. 2

Fig. 4 Fig. 6

Roughing paths must start in front of the block.

Roughing paths must run evenly across the entire restoration.

Entrance spiral is not designed in the centre of the cavity to the deepest point.

Distance between the roughing paths declines strongly on the sprue side.

Roughing paths fall below the depth restriction.

Too many approaching and departing movements surrounding the holding pin.

Finishing milling paths from the top and bottom do not overlap.

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Figures 8 to 16 represent examples of how milling paths should be designed.

Fig. 8 Fig. 10

Fig. 12

Fig. 14 Fig. 15 Fig. 16

Fig. 9

Fig. 11 Fig. 13

Entrance spiral is designed in the centre of the cavity to the deepest point.

Entrance spirals are designed in the centre of the cavities to the deepest point.

Finishing milling paths from the top and bottom overlap, only few approaching and departing movements.

Finishing milling paths from the top and bottom overlap, only few approaching and departing movements.

Roughing paths from the top and bottom run evenly across the entire restoration.

Roughing paths from the top and bottom run evenly across the entire restoration.

Finishing of cavities with consistent milling paths and only few approaching and departing movements.

Finishing of cavities with consistent milling paths and only few approaching and departing movements.

Processing of preparation margins with only one approaching and departing movement per cavity if possible.

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(A)

1.7 Generating the NC fi le

For the link to Zenotec select, the NC fi le is directly loaded into the Zenotec CNC in the milling manager.

For this purpose, defi ne the path "C:\WIELAND\ZENOTEC\CNCTransfer" as «Output folder» (A).

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Notes

Wieland Denta l sets the s tandards in denta l technology and s tands for innovat ion

and qual i ty . As a medium-s ized enterpr i se wi th over 140 years ‘ exper ience we are

one of the wor ld‘s leading suppl iers in the f ie ld of dental technology. Future-ready

integrated technologies and materials are the hallmarks of our expertise and prowess.

Wieland Dental opens up the way to progress in dental technology. www.wieland-dental.de

LEADING DIGITAL ESTHETICS

Wieland Dental +Technik GmbH & Co. KG

Lindenstraße 2, 75175 Pforzheim, Germany

Fon +49 72 31 / 37 05 - 0 ■ info@wieland-dental.de

www.wieland-dental.de PDF-

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