DENTSPLY Biodent K+B Plus Bedienungsanleitung

Instructions for Use

Gebrauchsinformation

Mode d’emploi

Istruzioni per I’uso

Bruksanvisning

Biodent®K+B Plus

Fig. 1

Fig. 2

Biodent®K+B Plus

Fig. 3

Fig. 4 Fig. 5 Fig. 6

Fig. 7 Fig. 8 Fig. 9

Biodent®K+B Plus

Fig. 11

Fig. 10

Biodent®K+B Plus

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

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.

English

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

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.

English

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.

English

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

English

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.

English

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