SILADENT Zirkon BioStar Instrucciones De Uso página 7

Anterior teeth
Abutment crowns for bridge frameworks
Minimum connector areas:
Anterior bridge framework
Anterior bridge framework
Posterior bridge framework
Posterior bridge framework
Cantilever bridge framework
Milling
Milling can be undertaken with most commercially available CAD/CAM milling machines or hand-operated copy-
milling machines. The machine manufacturer's manual should be consulted regarding the selection of the milling
cutters and the necessary revolutions/minute. In order to avoid staining or a loss of strength, the blank should
if possible not come into contact with liquids (water, oils) or fats (handcream) during milling and related hand-
ling of the blank.
Wet machining of the dental blanks in their pre-sintered state is in principle possible, but does require that the
restoration be dried completely before sintering. Drying can be undertaken in a drying chamber at approx. 80°C
or under an infrared lamp. Alternatively, a low-temperature firing program can be selected which will not da-
mage the blank.
Notches, sharp edges or slight damage, also on the underside of the framework, may reduce the strength of the
completed sintered work. Consequently, it is already important to ensure that surfaces are well rounded and
smooth when milling.
The framework must be optically checked after milling to ensure there are:
If any faults are discovered, the framework must not be used to fabricate a restoration.
Colouring
If required, the frameworks may be matched to the desired tooth colour with the standard colouring solutions
which are licensed for zirconium oxide ceramics. In order to achieve even results, it must be ensured that the
framework is completely clean, fat-free and dry before colouring. The instructions of the manufacturers of the
colouring solutions should be followed for the further work procedures.
Sintering
The sintering of the preparations can be undertaken in all standard furnaces which are suitable for zirconium
oxide ceramics. The manufacturer's operating instructions must be followed in all cases.
When sintered, the frameworks shrink by around 20 %. The required movement is only possible if the individu-
al crowns or frameworks are fired on corresponding sinter bearings. The framework must be positioned in such
a way that it cannot come into contact with other frameworks or the sinter carrier in order to avoid any defor-
mation. The sinter carriers must be examined at least every two weeks in accordance with the manufacturer's
instructions to ensure that they are level. Anterior and posterior dental frameworks with three or more elements
should generally be positioned with the occlusal side upwards. If sintering wires or pegs are used, it must be
ensured that there is no contact with the cap wall area. Alternatively, sintering may be carried out in a sintering
crucible in which the restoration is embedded in suitable granular material. One suitable type of granules are
ZrO sintering spheres. When using sintering crucibles and granules, the framework is placed in the granules with
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the occlusal side downwards.
The shrinkage of the preparations made of Zirkon BioStar and Zirkon BioStar Z remains at an extremely constant
level, both within the individual batches and over several batches, on account of the special production process.
We shall advise you of the exact values with each delivery.
Please refer to the information/parameters in the instructions for use issued by the manufacturer of the equip-
ment you are using.
Zirkon BioStar HT (high translucent)
Sintering:
To achieve an optimum translucency, the use of a fresh sintering bowl as well as sintering ZrO
recommended for the process of sintering Zirkon BioStar HT (high translucent). The sintering bowl must not have
been used for sintering other zirconia materials previously.
Colouring:
Zirkon BioStar HT is dedicated to achieve an individualization with the paint and brush technique, especially of
full anatomic frameworks. The individual painting of the frameworks occurs after the milling process and before
the sintering.
You can use all colours which are recommended for translucent zirconia material. Please follow the relevant
manufacturer's instructions for use.
Incisal/occlusal 0.7 mm
with 1 pontic
Incisal/occlusal 0.7 mm
with 2 pontics
Incisal/occlusal 1.0 mm
with one pontic
with two pontics
with one pontic
with two pontics
- No discolourations - No flaking - No cracks -
Circular 0.5 mm
Circular 0.7 mm
Circular 0.7 mm
7 mm
2
9 mm
2
9 mm
2
12 mm
2
12 mm
2
-beads is strongly
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