DENTSPLY Biodent K+B Plus User manual

Instructions for Use
Gebrauchsinformation
Mode d’emploi
Istruzioni per I’uso
Bruksanvisning
Biodent®K+B Plus

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Fig. 1
Fig. 2
Biodent®K+B Plus

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Fig. 3
Fig. 4 Fig. 5 Fig. 6
Fig. 7 Fig. 8 Fig. 9
Biodent®K+B Plus

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Fig. 11
Fig. 10
Biodent®K+B Plus

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Applications
●Crown and bridge veneers
●Jacket crowns in Biodent shades
●Attachment of plastic teeth in the flask
pack method
●Temporary crowns and bridges
●Corrections
●Repairs
●Telescope and cone works
K+B Plus is not suitable for occlusal surfaces.
Technical Data
Cured in pressure vessel (Type 1 according to
DIN EN ISO 10477:1995).
Self-curing (Type 2 according to DIN EN ISO
10477:1995).
Main components:
Powder: Polymethyl methacrylates
Liquid: Methyl methacrylates
In accordance with DIN EN ISO 10477:1995
1.
Bending strength: 65 MPa
2. E module: 2000 MPa
3. Water uptake: complies with standard
specification
4. Water
solubility: complies with standard
specification
5. Colour stability: complies with standard
specification
Characteristics
Material
Biodent K+B Plus is made of the dental
plastic INPEN, a blend of selected polymers
without filler and with a high proportion of
cross-Iinked particles. The proportions of the
various ingredients were formulated by
computer to produce an ideal composition.
The result was “Interpenetrated Polymer Net-
work“= INPEN –a heterogeneous micro-
structure.
Advantages: crowns and veneers resistant
to abrasion, tough, yet not brittle; no prob-
lems with grinding; easy to bring quickly to
a very high polish; permanently thick and
smooth surfaces; uniform curing tempera-
ture; reliable bonding of additional layers.
Colour
Biodent shades are easily and reliably
obtained in the plastic veneer. Each shade
has its own dentine opaque and the shading
of the bevelled layers is supported by nine
different neck opaques. The sheen and na-
tural qualities of the finished Biodent K+B
workpieces have a further optical quality of
natural teeth added to them: white fluores-
cence under ultra-violet light!
Technique
Three different liquids enable the use of any
of the following techniques:
Liquid S for the direct build-up method
Short doughing time (2–4 minutes at 22–
30°C).
Excellent plasticity, i.e. very easy to
mould and cut (not rubbery). The dough is not
tacky and does not cobweb. The materials
do not run into each other during the layering
but set quickly. No drying out, no formation
of skin. Ample working time (45 minutes).
Cure: water bath at 95°C, at least 15 minutes,
pressure 6 bars.
Liquid N for flask method
Good fluidity, long working time.
Cure: heat up for about 30 minutes, then
boil for 30 minutes.
Liquid K for cold cure
Sets quickly, short hardening time, only in
conjunction with Promotor K.
Cure: 8–12 minutes (according to room
temperature) or 10 minutes in pressure flask
at 40–50°C.
English

OVS Opaque II
Liquid, ready to use, covers perfectly in a
very thin film.
Drying time: 15 minutes at room tempera-
ture. This can be reduced to 5 minutes by
warming.
Presentation
Single Items
Dentine-, Enamel powders 20 g, 100 g
Neck-, Transparent-,
Tissue tone powders 20 g
Liquid S
Liquid S 30 ml, 100 ml
Liquid N 30 ml, 100 ml
Liquid K 25 ml, 80 ml
Accessories
Protective varnish 30 ml
Protective varnish thinner 10 ml
Promotor K 5 g, 15 g, 50 g
Mixing vessel
for Promotor K
Biodent Isolation Fluid H 15 ml
Biodent Isolation Fluid K 30 ml
Mixing palette with glass lid
Set of brush tips (10 pieces)
Measuring spoon
OVS II Opaque Kit
For Biodent K+B Plus use exclusively the
Biodent OVS II Opaque and the OVS II Opaque
thinner.
18 Dentine opaques, OD10–D41
9 Neck opaques
OH 10 = Biodent 10
OH 13 = Biodent 13, 15, 17, 20, 22
OH 16 = Biodent 16
OH 21 = Biodent 21
OH 23 = Biodent 23, 32
OH 25 = Biodent 25, 26, 27, 30
OH 31 = Biodent 31
OH 39 = Biodent 39, 41
OH 40 = Biodent 40
4 Intensive opaques
O1 = white
O2 = transparent-grey
O3 = blue-grey
O4 = pink
1 OVS II Opaque thinner
1 set of 3 red sable brushes with metal
handles
Single Components
OVS II Opaque 10 ml
OVS II Opaque thinner 10 ml, 100 ml
Opaque
The opaque is in liquid form and therefore
ready for immediate use. Shake the bottle
well before using and replace the stopper
immediately after use.
Clean, degrease and dry the metal surface and
apply the opaque from the phial with a fine
sable brush. The metal must be rough, not
smoothed by sand-blasting or electrolytically.
Brush the opaque on thinly and evenly.
Apply dentine opaque first, let it dry and
then paint on the neck opaque.
With plastic jacket crowns, first insulate the
die and then apply opaque to the well-dried
insulating film.
Flask Method
Apply opaque after the crown or bridge has
been bedded in and the wax boiled out.
Drying Time
Opaque hardens at room temperature in
15 minutes. Alternatively, the bridge frame
with its covering of opaque may be heated
at 60–90°C (e.g. before an infrared lamp)
for at least 5 minutes.
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Thin Veneers
The less room there is for the veneer, the harder
it is to get the required Biodent shade, depth
effect and body. Here the proper use of
the additional opaques on top of the neck
opaques will be of assistance. Thus, for ex-
ample, the dentine opaque can be lightened
with 01. In the incisal area additional effects
can be obtained with opaques O2 and O3.
Examples of the Use of Opaques O1–O4:
O1 –white: brightens all dentine-coloured
opaques
O2 -–transparent-grey/O3 –blue-grey:
To provide more translucency in the incisal
area, apply opaque O2 –shaded if neces-
sary with O 3 –without perceptibly encroach -
ing on the dentine-coloured opaque, thus
avoiding an abrupt transition at the tip.
O4 –pink: covers retentions in contact with
the gum
OVS II Opaque Thinner
lf the opaque thickens after a time it can be
made less viscous by adding a few drops of
thinner (shake well!).
Clean brushes well with the thinner after use
–but never use thinner in which brushes
have been cleaned for thinning opaques
(risk of contamination).
Note
A reliable bond between plastic veneer and
metal framework is achieved by the OVS
System (Opaque Resin Bonding System).
The system consists of coating the metal sur-
face electrolytically with a tin oxide layer to
prepare the surface for a micromechanical
and chemical bonding with the special OVS II
opaque resin (see separate OVS Instruction
Manual).
Fig. 3
Direct Build-up Method (Liquid S)
Mix the material to a paste on the palette
with the Biodent K+B instrument. The same
instrument is suitable for applying and mould -
ing the paste.
Pack undercuts on dies and adjacent plaster
teeth with sealing compound and coat the
dies and adjacent parts of the cast with Iso-
lation Fluid H. Soak the plaster dies in water
before isolating to eliminate air. The isolating
film must be left to dry for 15 minutes before
applying the plastic paste.
Mixing
Mix the materials immediately before use. The
ratio of liquid and powder is 1:2 by weight.
First pour the monomer into the hollow of the
palette and dispense powder until all the
monomer is absorbed. The surface is then
slightly glossy. Mix well for 15–30 seconds.
The proportions are right when the paste
hardly drips from the spatula.
Doughing time is from 2 to 4 minutes, depend -
ing on room temperature. Then knead the
dough well with the spatula. lf it is still tacky
and cobwebby, moisten the instrument with
monomer and smooth the dough. The right
consistency is reached when the material is
no longer tacky and does not cobweb but is
plastic and malleable (if the material is cut
into, the cut should not close up). lt can now
be applied for up to 15 minutes. After that,
there is still plenty of time, even in multi-span
bridgework, for modelling and carving
(another 30 minutes).
Layering (Figs 4–10)
O = Opaque
D = Dentine
S = Enamel
H = Neck
T = Transparent
The materials are applied in the order neck,
dentine, enamel material.
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With thick crowns, an extra wedge of trans-
parent material is laid palatally on the in-
cisal area –with or without an admixture of
enamel material (Fig. 4 T). With veneers,
the metal frame must first be masked with
opaque.
Neck material
Take the work to be veneered, or the insulat-
ed die, off the model, if necessary, for
layering. Apply the material parallel to the
shoulder or to the edge of the gum as shown
in the layering diagram (Figs 4–10). Draw it
up in the proximal area, as on the shade
guide tooth.
In all layers, moisten the instrument with a
touch of monomer.
Dentine material
Apply dentine material to the centre of the
crown and spread it out. Press it lightly onto
the neck area but do not displace the neck
material. Undercuts must be packed without
forming bubbles. In the incisal area the den-
tine is built up as with the original Biodent
layering (Figs 7–10).
Taper the dentine core off about 1mm below
the incisal edge and bevel off proximally
and incisally to a crescent shape. This is the
stage at which the dentine core receives its
final form.
Fig. 10: Formation of the dentine core.
Blending according to Biodent shade:
Fig. 7: Biodent shades 15,16, 17
Fig. 8: Biodent shades 21, 23, 31, 39, 41
Fig. 9: Blending for all other Biodent shades.
Enamel material
This is built up in the incisal area and tapered
off towards the neck over the dentine.
Take the ready-modelled crown or veneer,
with its die, off the model. Carefully remould,
or add more material to the edges and points
of contact. With veneers, cover the edges
with plastic to get a good marginal fit.
Protective varnish
Prevents penetration of the curing medium
into the plastic and produces dense, smooth
surfaces. Do not use in cold curing. Let the
work dry after modelling until the surface
looks matt. Then brush the varnish on.
Leave
for about 3 minutes before curing, until
the
surface is no longer tacky. The drying time
may be shortened by warming.
Protective varnish thinner: lf the protective
varnish thickens after a time, it can be made
less viscous again with a few drops of the
thinner (shake well).
Curing
Leave in the vacuum-cure water bath for at
least 15 minutes at 95°C; pressure: 6 bars.
Fig. 11
Do not exceed the curing temperature of
95°C.
Cool off slowly, then grind and polish as
usual. Fine toothed, hard-metal burs are
very suitable for grinding because of the
greater hardness.
Extra Layers
lf, perhaps by an error in layering, the den-
tine shade looks too dark, reduce or rough-
en the labial surface, moisten with a little
monomer and overlay with enamel material.
The new material used for correction should
have the same consistency as that applied
before. Colouring features can now be
added or corrections made at the points of
contact. The transition from plastic to metal
should be masked with fresh material.
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Flask Method (Liquid N)
For veneers, ensure that the walls are thick
enough (about 1 mm).
The wax mould should be as close in shape
and modelling to the final work as possible,
so that extensive grinding may not produce
shade variations.
Mechanical retentions are essential in
veneering. They should be placed whenever
possible in the interdental spaces.
Invest the prepared wax pattern so that the
incisal edge rises at an angle of about 30°.
The whole labial surface and most of the
proximal surfaces should be free of the invest -
ment plaster. After boiling-out, coat the plaster
mould on both sides with DENTSPLY Isolant.
Mixing
Mixing ratio of liquid to powder is 1:2 by
weight. Pour liquid into the mixing vessel
and add enough powder to absorb all the
monomer. Mix briefly. lf the paste is too thin,
add more powder until the paste no longer
drips off the spatula. Now mix thoroughly
for 15–30 seconds.
A rather higher proportion of liquid is used
for the enamel material.
The materials are best mixed in the order in
which they are to be used. Doughing time for
dentine and neck materials is about 6 minutes.
The enamel paste, being thinner, can be ap-
plied about 21
/2minutes after mixing.
A separate mixing vessel is supplied for
each material. The matt surface of the lids can
be written on for identification purposes.
Layering
The materials are layered in the following
order: dentine, neck (pre-cure for10 minutes),
enamel (see Figs 4–6).
For thick crowns, lay an extra wedge of
transparent material –with or without an ad-
mixture of enamel material –palatally on
the incisal area (Fig. 4 T). With veneers, the
metal frame must first be masked with opaque
(see section “Opaque”).
Dentine and neck materials
First mix the dentine material and allow about
6 minutes for doughing. Then pack the hol-
low mould completely with the paste. Cover
with separating foil and close the flask.
Leave the flask in the press and mix the neck
material.
Open the flask, cut away the dentine in the
neck area and apply the prepared neck
material. After a trial closure –and any ne-
cessary corrections in the neck area –clamp
the flask down and pre-cure for 10 minutes.
Enamel material
After the pre-curing, grind away the dentine
in the incisal area as in the Biodent blending
diagram (Figs 7–10). Then mix the enamel
material, apply it, cover with separating foil
and press. Check layering and correct as
necessary.
Curing
Heat the clamped-down flask up to 100°C
in not more than 30 minutes; then boil for
30 minutes more. Cool the flask off slowly to
room temperature.
Cold Curing (Liquid K)
Applications
●Corrections to crowns and bridge veneers
●Repairs
●Attachment of plastic teeth in the flask-
pack method
●Temporary crowns and bridges in the
laboratory
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Pack undercuts with sealing compound and
coat dies and adjacent parts of the cast with
Isolation Fluid K. Soak plaster dies in water
before isolating to eliminate air. The isolat-
ing film must be left to dry for 10 minutes be-
fore applying the plastic.
Mixing
In cold curing the Promotor K is required for
hardening. First mix powder and Promotor K
in the proportion of 10:1 by weight.
Place 1 large measure of powder and 1 small
measure of Promotor K in the special mixing
vessel and shake well. Mix this blend on the
palette with monomer K to a creamy-to-pasty
consistency, depending on the nature of the
work.
Working time may be up to 4 minutes after
mixing, depending on consistency and room
temperature.
The powder/Promotor mixture is workable
at room temperature for 4 weeks.
Layering
As in the direct build-up method described on
pages 3–4. Do not use protective varnish!
Curing
Hardening takes 8–12 minutes from start of
mix, depending on room temperature. lt is
advisable to cure in a pressure vessel for
10 minutes at 40–50°C.
For large or complicated workpieces an
intermediate cure of the applied material
is recommended, also of 10 minutes at
40–50 °C, in the pressure vessel.
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