Processing instructions Everest® G-Blank

Processing instructions
Everest® G-Blank
Always be on the safe side.
Sales:
KaVo Dental GmbH
Bismarckring 39
D-88400 Biberach
Tel. +49 7351 56-0
Fax +49 7351 56-1488
Manufacturer:
Kaltenbach & Voigt GmbH
Bismarckring 39
D-88400 Biberach
www.kavo.com
Processing instructions Everest® G-Blank
Contents
Contents
Contents ...........................................................................................................................................................1
1 User instructions ............................................................................................................................................2
1.1 User guide ................................................................................................................................................2
1.1.1 Abbreviations ................................................................................................................................... 2
1.1.2 Symbols ...........................................................................................................................................2
1.1.3 Target group ..................................................................................................................................... 2
1.1.4 Proper use ........................................................................................................................................2
2 Safety ............................................................................................................................................................3
2.1 Description of safety instructions ............................................................................................................. 3
2.1.1 Warning symbol ............................................................................................................................... 3
2.1.2 Structure ...........................................................................................................................................3
2.1.3 Description of hazardous steps ........................................................................................................ 3
2.2 Warranty terms and conditions ................................................................................................................ 4
3 Information on materials ................................................................................................................................ 5
4 Processing .....................................................................................................................................................6
4.1 Preparing and planning the model ........................................................................................................... 6
4.1.1 Preparing the model ......................................................................................................................... 6
4.1.2 Planning the model .......................................................................................................................... 7
4.2 Model production ..................................................................................................................................... 8
4.3 Embedding G blanks ................................................................................................................................ 9
4.4 Inserting the insert into the KaVo Everest® engine ................................................................................ 10
4.5 Fill cavity ................................................................................................................................................11
4.6 Removing the G restoration from the bed .............................................................................................. 12
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Processing instructions Everest® G-Blank
1 User instructions | 1.1 User guide
1 User instructions
1.1 User guide
1.1.1 Abbreviations
Short
form
GA
PA
MA
TA
STK
IEC
RA
EMC
VA
Explanation
Instructions for use
Care instructions
Assembly instructions
Technical instructions
Safety check
International Electrotechnical Commission
Repair instructions
Electromagnetic compatibility
Processing instructions
1.1.2 Symbols
See the section Safety/Warning Symbols
Important information for users and technicians
CE mark (Communauté Européenne). A product with this mark meets the
requirements of the corresponding European directive, i.e., the applicable
European standard.
Action required
1.1.3 Target group
This document is for dental technicians and laboratory personnel.
1.1.4 Proper use
Everest® G blanks offer laboratories industrially prefabricated glass ceramic blanks
is different sizes for the KaVo Everest® system.
The full crowns, inlays, onlays and veneers made from Everest® G blanks can be
individually characterized with Everest® G stains.
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Processing instructions Everest® G-Blank
2 Safety | 2.1 Description of safety instructions
2 Safety
2.1 Description of safety instructions
2.1.1 Warning symbol
Warning symbol
2.1.2 Structure
DANGER
The introduction describes the type and source of the hazard.
This section describes the potential consequences of non-observance.
▶ The optional step contains necessary measures for avoiding hazards.
2.1.3 Description of hazardous steps
Safety instructions with three hazard levels are used in this document for avoiding
personal and property damage.
CAUTION
CAUTION
indicates a hazardous situation that can lead to property damage or minor to mo‐
derate injury.
WARNING
indicates a hazardous situation that can lead to serious injury or death.
WARNING
DANGER
DANGER
indicates a maximum hazardous situation that can directly cause serious injury or
death.
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Processing instructions Everest® G-Blank
2 Safety | 2.2 Warranty terms and conditions
2.2 Warranty terms and conditions
Use KaVo products in accordance with the instructions for use. KaVo assumes no
liability for damage arising from improper handling or processing. The user must
also examine the product before using it for its suitability for the intended application.
KaVo is also not liable when the product is processed with materials and equipment
by different manufacturers that are incompatible or impermissible. In addition, Ka‐
Vo's liability for the correctness of this information independent of the legal basis
and to the extent legally permissible is restricted to the value of the delivered product
according to the invoice without sales tax.
In particular to the extent legally permissible, KaVo is not liable for lost profit, indirect
damage, consequential damage or claims of third parties against the buyer. Claims
to damages from strict liability (fault from violation of a contract upon conclusion of
a contract, impermissible activities, etc.) only exist when there is wilful intent or gross
negligence.
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Processing instructions Everest® G-Blank
3 Information on materials
3 Information on materials
Everest® G Blank
Everest® G blanks offer laboratories industrially prefabricated glass ceramic blanks
is different sizes for the KaVo Everest® system.
The full crowns, inlays, onlays and veneers made from Everest® G blanks can be
individually characterized with Everest® G stains.
The Everest® G blanks are clinically proven and are characterized by the following
properties:
▪ natural translucence
▪ Biocompatibility
▪ high break resistance
▪ easy to polish
When the Everest® G-Ceram is used as a coping material, a complete assortment
of veneer materials are available to the technical in Vita Classical® colours.
Technical data on the KaVo Everest® G blank
CTE (25°C to 500°C)
13.0 x 106 K-1
Flexural strength
≥ 125 Mpa
Chemical solubility
20 µg/cm3
Indications for the KaVo Everest® G blank
▪
▪
▪
▪
Crown frameworks in the anterior and posterior areas
Inlay
Onlay
Veneer
Contraindications for the KaVo Everest® G blank
▪
▪
▪
▪
▪
insufficient oral hygiene
bruxism
Tangential preparation results
Bridges
with abutments
Preparation conditions
The following preparation conditions must exist to produce a satisfactory glass ce‐
ramic restoration:
The preparation can be made either with a 90° hollow neck preparation, or a shoul‐
der with rounded inner edge. Try to achieve a circular cutting depth of 1 mm.
All transitions from the axial to the occlusal or incisal surfaces are to be rounded off
with 1 mm or blocked out on the model with KaVo Everest® Scan wax. In the surface
module of the construction software, a radius correction can optionally be made.
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Processing instructions Everest® G-Blank
4 Processing | 4.1 Preparing and planning the model
4 Processing
4.1 Preparing and planning the model
4.1.1 Preparing the model
Apply the criteria of conventional casting when preparing the model and dies. Ob‐
serve care in preparation to ensure a precise fit later
All model segments must be designed to be removable. They must separate easily
from the base to prevent inaccuracies when later removing the individual dies in the
scanner.
A conventional plaster base is recommended. White or reflecting plates should not
be used. They can negatively influence the measuring results.
It is essential to use Everest® Rock to manufacture the dental arch (100 g: (100 g :
20 ml) . Other plasters can impair measurement.
The exposure of the preparation margin should not be to strongly undercut. Sharp
angles can cause a loss of data at these sites. Do not mark the preparation margin.
Waxing in and rounding sharp-edged preparations ensures an easier fit. Everest®
Scan Wax or a light cured opaque plastic is recommended for this.
Note
The dies should not be treated before scanning. Do not use die varnish, die spacer
or hardener.
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Processing instructions Everest® G-Blank
4 Processing | 4.1 Preparing and planning the model
4.1.2 Planning the model
Do not fall below the following CAD parameters when constructing:
▪ Metal margin A = 0.4
▪ Base thickness B = 0.8
▪ The transitional area X = 0,7 may not be larger
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Processing instructions Everest® G-Blank
4 Processing | 4.2 Model production
4.2 Model production
Full crowns, inlays, onlays and veneers are modelled with a special wax and then
scanned in.
See also: GA KaVo Everest® scan 4100
The Everest® wax set is required for modelling. The wax set consists of plaster
hardener, plaster/wax insulation and the special wax that can only be used for mea‐
suring in Everest® scan. Since it leaves residue upon being burned, it may not be
used in conventional casting.
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Processing instructions Everest® G-Blank
4 Processing | 4.3 Embedding G blanks
4.3 Embedding G blanks
▶ The G blanks should only be embedded when they are required.
▶ Do not embed them in advance.
▶ For Universal Inplast, always mix components A and B at a precise weight ratio
of 1:1.
▶ Shake the container well before use.
Note
Otherwise the homogeneity of the plastic can vary, and the plastic may not cure
evenly.
▶ Choose a G positioning appliance appropriate for the G blank size,
▶ Insulate the G positioning appliance well with Vaseline.
▶ Then place the insert on the positioning appliance. Make sure the insert is pre‐
cisely seated.
▶ Fill the insert to its upper edge with Universal Inplast.
▶ Once the insert is fully hardened, remove the positioning appliance by twisting
it out of the insert.
Note
Do not forcefully break it out since this may damage the blank.
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Processing instructions Everest® G-Blank
4 Processing | 4.4 Inserting the insert into the KaVo Everest® engine
4.4 Inserting the insert into the KaVo Everest® engine
Use the following pins for grinding:
▪ KaVo Everest® diamond grinding pin 1 (Mat. no. 1.001.6000)
▪ KaVo Everest® diamond grinding pin 3 (Mat. no. 1.001.6001)
▶ Fix the insert in the KaVo Everest® engine.
▶ Start the program.
See also: Instructions for use for the KaVo Everest® 4140 (Mat. no. 1.002.3165)
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Processing instructions Everest® G-Blank
4 Processing | 4.5 Fill cavity
4.5 Fill cavity
After grinding the cavity, the program automatically stops so that the inside can be
filled.
▶ Do not remove the yoke or insert from the Everest® engine.
▶ The cooling lubricant and grinding residue must be rinsed out well with water.
Preferably use a spray bottle.
▶ Then gently dry the cavity with oil-free compressed air.
▶ Use an instrument to apply a thin layer of pattern resin over the entire cavity.
Make sure that the layer is not too thick.
▶ Stir the Everest® Universal Inplast in a mixer with equal parts by weight until thin.
Make sure that the mixing ratio of components A and B is precisely 1:1.
▶ Shake the container well with the mixing components.
▶ Add the mixed plastic to the Everest® Insert up to the top edge.
▶ Fill in the cavities with Everest® Universal Inplast.
▶ After filling the cavity, set autostart with a delay of 15 minutes.
After 15 minutes, the Everest® engine starts grinding the occlusion.
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Processing instructions Everest® G-Blank
4 Processing | 4.6 Removing the G restoration from the bed
4.6 Removing the G restoration from the bed
CAUTION
Hot preheating oven
Burn hazard!
▶ Be particularly cautious when working with the preheating oven.
▶ After the grinding process, remove the Everest® Insert from the gripping yoke.
▶ Carefully remove the plastic from the finished crown with a hair drier and remove
the piece from the bed. When removing the piece from the bed using force, take
care not to damage the thin edges of the crown.
or
▶ Slowly heat the Everest® Insert approx. 150°C for 20 minutes in the preheating
oven. Then carefully remove the finished piece with a tweezers.
▶ Continue to process the glass ceramic crown or coping.
See also: VA Everest® G-Ceram
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1.002.4734 · kb · 20080303 -01 · en