22
ENGLISH
3.
Apply
a
layer
of
whitening
gel
(BGEL)
to
the
teeth
to
be
treated.
Spread
it
on
evenly
and
avoid
using
more
than
necessary.
Warning:
when
you
use
the
syringes
with
nozzle,
the
presence
of
air
trapped
in
the
syringe
could
cause
the
gel
to
come
out
in
an
uncontrolled
manner.
(To
make
this
procedure
easier,
rotate
the
plunger
as
you
measure
out
the
required
quantity).
Be
very
careful
to
move
the
plunger
very
gradually,
or
place
the
gel
on
a
suitable
surface
and
then
spread
it
on
with
a
special
brush.
In
this
way,
you
can
spread
the
gel
correctly
and
handle
the
material
better.
4.
Both
patient
and
operator
must
put
on
the
special
glasses
provided,
and
then
arrange
the
lamp
so
that
the
LED
head
is
next
to
the
patient's
mouth
at
a
distance
of
not
more
than
10
cm.
Use
the
buttons
situated
on
the
control
panel
to
set
the
treatment
time
and
start
the
treatment
(for
treatment
times,
see
next
chapter).
During
the
treatment,
the
patient
should
be
checked
and
assisted
to
verify
his/her
comfort
and
state
of
well
‐
being.
5.
At
the
end
of
treatment,
the
whitening
gel
must
be
removed
by
the
dentist
with
the
help
of
an
assistant,
who
must
take
care
to
avoid
letting
it
fall
on
the
patient's
exposed
mucous
membranes.
Remove
the
polymerized
dam
and
make
the
patient
rinse
his/her
mouth.
6.
If
the
patient
has
a
marked
dental
sensitivity,
spread
a
phial
of
DESENS
(potassium
nitrate)
over
the
treated
teeth
with
the
special
brush.
7.
At
the
end,
the
results
are
assessed
and
the
patient
should
be
given
information
on
post
‐
treatment
behaviour
(avoid
drinking
coffee,
chocolate,
substances
containing
tannin
and
eating
hot
food
or
drinking
hot
drinks
for
at
least
72
hours).
The
maximum
achievement
of
whitening
should
be
assessed
10
‐
15
days
after
the
treatment.
