BeCe® Temp
Processing information for CAD/CAM-produced restorations
Partners in Progress
CAD/CAM-PRODUCED RESTORATIONS MADE OF BeCe® Temp
BeCe® Temp
BeCe® Temp is a tooth-coloured composite based on PMMA
(highly cross-linked polymethyl methacrylate) for the production
of composite crowns, bridges and frames for restoration within the
scope of provisional and preprosthetic restorations in the anterior
and posterior regions.
Restorations made from BeCe® Temp are characterised by special
highly cross-linked polymers. These polymers give them high fracture resistance with a smooth and thus plaque-resistant surface at
the same time, which guarantees reliable soft tissue management,
particularly in implant restorations.
The BeCe® Temp restorations produced by BEGO Medical GmbH
thus ensure preprosthetic restorations of unbeatable quality.
CAD/CAM products manufactured by BEGO Medical GmbH are
custom products for individual patients.
Indications
Provisional, long-term temporary and semi-permanent single tooth
and bridge restorations, such as:
• Frames for partially and fully veneered solutions with up to two
pontics (including fully anatomical)
• For aesthetic trial fittings
• Table tops (partial crowns placed on the top third of the tooth
and cemented)
• Eggshell temporary restorations (CAD/CAM-milled immediate
restorations)
• Metal-supported long-term temporary restorations
Blanks made of BeCe® Temp
Contraindications
Undesirable biological reactions (such as allergies to material
components) can occur in isolated cases. BeCe® Temp restorations are contraindicated in case of known incompatibilities or
known allergies to material components.
Shade chart
BeCe® Temp restorations are available in 2 different shades.
The following BEGO chart is available for selecting the shades and the corresponding final result according to the VITA* classical shade
system:
Shade allocation
A0
A00
B0
B00
A1
A2
B1
B2
C1
D2
A3
K1
*VITA is a registered trademark of Vita Zahnfabrik H. Rauter GmbH & Co. KG, Bad Säckingen, Germany.
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A3.5
A4
B3
B4
C2
K2
C3
C4
D3
D4
INFORMATION FOR DENTAL TECHNICIANS
Wall thicknesses / CAD wax-up
In order to achieve the clinically necessary stability, a minimum
wall thickness of 1 mm is required for the objects. The wall thickness should be increased at critical points on the objects, e.g., at
the transition between a connector and a terminal pontic. Terminal pontics should not be larger than the width of a pre-molar.
Modelling of a 5-unit provisional bridge in 3Shape DentalDesigner
Anterior regions
Restoration
Single crown
Splinted crowns
3-unit bridge
4-unit bridge with 2 pontics
Wall thickness in mm
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Posterior regions
Connector design
The design of the connector is based on the size and indication of
the restoration to be inserted. A distinction is made between anterior and posterior bridges. A connector cross section of at least
9 mm2 must be maintained. The connector cross section must be
increased for posterior bridges, large bridges with a large number
of pontics or successive pontics and/or restorations with a terminal pontic. For bridge constructions with a span size of up to
two pontics, the connector cross section between the crown and
bridge units must not be less than 12 mm2.
Connector stability is achieved more through height than width.
Abutment design
We recommend paying attention to the minimum wall thickness
around the adhesive abutment when waxing up two-piece abutments. Please use the thickness representation in the Assembly
step in the 3shape™ software or measure the wall thickness with
the 2D cross-section to check the data record. Avoid points and
sharp edges in the entire design.
For further information concerning the abutment design, please
consult the Scan and Design Centre guidelines.
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INFORMATION FOR DENTAL TECHNICIANS
Metal-supported long-term temporary restorations
For stability reasons, fixed long-term temporary restorations are
often equipped with a “metal core” (metal-supported). This type
of restoration and non-metal-supported temporary restorations can
be produced quickly and easily with the Bego Medical CAD/CAM
system using 3Shape software.
Note: For modelling recommendations, please refer to the special
recommendation for metal-supported long-term temporary restorations. This can be found on the BEGO Medical homepage in the
download section.
Metal-supported BeCe® Temp long-term temporary restorations
Table tops
Table tops are partial crowns placed on the top third of the tooth.
It is a synonym for an onlay, but is not usually prepared.
It is also a cost-effective alternative for allowing a patient to adapt
to a new bite situation. The procedure is far superior to standard
splint therapy, as the patient wears the new bite situation permanently (masticatory cycle, etc.). In addition, the method is mini-
mally invasive and thus very comfortable for the patient.
Note: For further modelling recommendations, please refer to the
special recommendation for table tops. This can be found on the
BEGO Medical homepage in the download section.
Eggshell temporary restorations
Eggshell temporary restorations are milled immediate restorations. CAD/CAM can be used to produce this temporary restoration
for the patient quickly, easily and with attractive aesthetics and
quality. This makes it possible to cut the time required for producing a temporary restoration in half. Thanks to their thin minimum
wall thickness, the eggshell temporary restorations can be customised easily and can be used to show the patient the corrected
tooth position, tooth colour or tooth shape in advance. In addition,
it also functions as a preparation aid for the practitioner to create
space for a correct restoration. It is also a cost-effective alternative
for allowing the patient to adapt to a new bite situation.
Note: For further modelling recommendations, please refer to the
special recommendation for CAD/CAM-milled eggshell temporary
restorations made from BeCe® Temp. This can be found on the
BEGO Medical homepage in the download section.
Finishing of objects
The produced BeCe® Temp should be processed with a suitable
cross-cut carbide cutter or suitable cutting discs for composites.
In addition, subsequent polishing of the restorations is essential
to avoid plaque deposits. Goat-hair brushes with corresponding
polishing pastes can be used for the polishing.
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Considerable heat development should be avoided during the
finishing and polishing in order to avoid inaccurate fits after the
frames are produced.
INFORMATION FOR DENTAL TECHNICIANS
Cleaning the objects
Due to the high degree of heat development, the cleaning of the
objects prior to further processing should not be performed with
steam. Use an ultrasound bath with a max. temperature of approx.
35°C for this purpose. Cleaning solutions are not recommended.
Composite veneering
A milled BeCe® Temp frame can be coated with conventional
cold-cure resins such as Combipress N/LM, Weropress®(1) or artConcept®(1). Materials based on MMA should be given preference.
When veneering with composites, the connection to the PMMA
must always be performed in accordance with the specifications
of the respective manufacturer.
Note: It is imperative to follow the specifications in the instructions for use supplied by the veneer manufacturer.
Example:
• Vita VM LC
• Shofu® Solidex
• 3M Espe Sinfony TM
Preparation
Generally speaking, anatomically reduced preparation should be
performed and the conventional preparation guidelines apply.
Cementing
Restorations made from BeCe® Temp as a long-term temporary
restoration are intended for a maximum wearing period of 12 months.
Please use a conventional, eugenol-free provisional cement for
cementing BeCe® Temp.
Preparations containing eugenol impede the polymerisation of
composite-based, definitive cements for the subsequent restoration.
The following is generally applicable:
• Temporary cements for the temporary restoration
• Glass ionomer cements without bonding for the long-term temporary restoration
Cementing of table tops and eggshell temporary restorations
Table tops and eggshell temporary restorations should be fixed
in place with adhesive, as it is otherwise not possible to achieve
sufficient fixation.
• Condition frames with Rocatec
• Temporary fixation with eugenol-free, conventional fixation
cement following the manufacturer’s specifications, without
enamel/dentine adhesive technique
(1)
Product of Merz Dental GmbH, Lütjenburg, Germany.
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GENERAL INFORMATION
BeCe® Temp composition and physical data
Composition
Material data
Polymethyl methacrylate (PMMA) and cross-linked polymers based on
methacrylic acid residues
• Dyes
• Residual peroxide
Methyl methacrylate (MMA) can be included as a residual monomer up
to max. 1%.
Density
1.19 g/cm3
DIN ISO 10477
Solubility
0.2 µg/mm3
DIN ISO 10477
Flexural strength
91.5 MPa / 96.6 MPa
DIN ISO 10477 /
DIN IN ISO 20795-1
Water absorption
26.5 µg/mm3
DIN ISO 10477
Flexural modulus
2773 MPa
DIN EN ISO 20795-1
Water solubility
Insoluble
DIN ISO 10477
Solubility (qualitative)
Poorly soluble in organic
solvents
Milled bridges made of BeCe® Temp
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GENERAL INFORMATION
Note
Restorations are custom products in accordance with Directive 93/42/EEC.
Specify batch no. for every procedure which requires identification of the material.
Storage
No special measures required.
Information on hazards
The processing of BeCe® Temp produces dusts, which can irritate the eyes, skin and airways. For this reason, please always ensure that the extraction
systems at your workstation are in perfect working order.
Disposal
BeCe® Temp restorations are not water soluble, are inactive, pose no risk for the groundwater and can thus be disposed of as normal household waste.
Warranty
Our recommendations for use, whether given verbally, in writing, or by practical instruction, are based upon our own experience and trials and can
therefore only be regarded as guidelines.
Our products are subject to continuous development. We thus reserve the right to make modifications in design, appearance and materials without
notice.
Labelling
Manufacturer
Use
Only to be used by dental staff
Rx only
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BEGO Medical GmbH
Wilhelm-Herbst-Str. 1 · 28359 Bremen, Germany
Tel. +49 (0)421 20 28-0 · Fax +49 (0)421 20 28-174
www.bego-medical.de · E-mail: [email protected]
REF 800062/01 · D4M14018 · © 2014 by BEGO · 2014-09
www.bego.com