Shofu VINTAGE Halo Instruciones De Uso página 16

materials are not mixed together.
Build up / Basic Technique
VINTAGE HALO was developed to achieve optimum aesthetics in the most efficient
manner. All the components of the system are matched to each other so that even
with a basic layering technique of Opaque-Dentine, Body and Opal Incisal the system
will give an excellent result. The HALO System can be extended with supplementary
powders e. g. Translucent, Effects, Value Plus and Red Shift which offer additional
choices depending on the requirements of the technician.
Opaque-Dentine
Often the colour of the opaque appears too dominant and changes the shade of the
finished restoration in the cervical and interdental areas or in areas of limited space.
HALO OPAQUE-DENTINE exhibits reflection, brightness and a colour match identi-
cal to natural teeth, and should be used in the above areas to give a natural appea-
rance. Opacious dentine is also recommended for use at the base of a bridge pontic,
using a minimum thickness of 1 mm. Mix the powder with distilled water to a creamy
consistency and apply a crescent shape on to the moistened opaqued framework
(fig. 9), condense the material (preferably with a Ceramosonic Condenser) and re-
move the excess water with a tissue.
Body
The body porcelain is mixed as described above. We recommend that the final ana-
tomical form of the tooth is modelled in Body porcelain (fig.10), slightly condensed
and cut back to the definitive body shape (fig.11). This is necessary to determine the
correct placement of Opal Incisal and will ensure a natural result is achieved. The por-
celain should not be allowed to completely dry out during this process.
Incisal / Opal Incisal material
The VINTAGE HALO basic system contains two different groups of Incisal powders,
Incisal Standard and Incisal Opal. Incisal Standard is a non opal material with a grey-
ish appearance which is often exhibited in old and worn teeth. When Incisal Standard
is used, it is recommended that it is covered with a layer of translucent powder to
create a natural result. Bluish or orange colours can only be achieved by using
additional colour effect powders. If a restoration has a complete metal backing to the
incisal edge, we recommend that Incisal Standard is used. For young to middle age
patients where the enamel is thick and unworn, Opal Incisal powders should be used,
as this will reproduce a natural light transmission in the incisal area. VINTAGE HALO
Opal Incisal powder has a similar structure and particle distribution to natural enamel.
This property enables the bluish translucency and diffused orange colours of natural
enamel to be reproduced without the addition of colour effects. Thus vital and aesthe-
tic restorations can be produced using a simple two layer technique ( Body & Incisal ).
This phenomenon is maintained even after repeated firings. Apply the mixed Opal Inci-
sal powder onto the cut back body porcelain (fig.12) and model to the final anatomi-
cal tooth shape. During firing the porcelain will shrink a small amount, and for this rea-
son it is necessary to over build the porcelain by 1.0 -1.3 mm (fig.13).
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