GC EUROPE GRADIA Direct (X) - Manual (Page 15)

GRADIA DIRECT
15
Inside Special Shade The influence of wrong value
on end result Standard Shade
Multi shade
Shade selection
After cleaning the tooth
with pumice and water,
select shades prior to
isolation, assisted by the
GRADIA DIRECT Shade
Guide. For the multi-shade
technique the following
shades are selected,
depending on whether it is
for an anterior or posterior
restoration.
Standard Shades
For anterior or posterior
cavities, choose the
Standard Shade in the
same way as for the single-
shade technique.
Inside Special Shades
For an anterior cavity,
choose the Inside Special
shade to go underneath
the Standard Shade.
Inside Special shades have
a higher opacity (i.e. lower
translucency) than
standard shades and are
used to:
• block out unwanted
‘dark shine’ through the
mouth or to mask
discoloured dentin
• replace dentin in cases
of substantial loss of
tooth structure, such as
in larger cavity Class III
and Class IV restorations
The shades available are
AO2, AO3 and AO4,
where each has a similar
hue but increased chroma
content. Translucency is
kept at the same level.
Outside Special Shades
The enamel surface gives
‘life’ and vitality to the
tooth and it is this which is
the main contributor to the
value reading of a tooth.
Value is often
underestimated in its
importance compared to
hue and chroma, but in
fact choosing the correct
value first, achieves 60% of
the final ‘colour’, picking
the correct chroma next
gives 90% of the ‘colour’
and the final 10% is
reached by selecting the
right hue. Value is best
determined by looking at
the incisal and approximal
sites of the tooth.