Basic information on the
Straumann® Variobase™ Abutment.
1
Straumann is the industrial partner of the ITI (International Team for
Implantology) in the areas of research, development, and education.
Contents.
1.Introduction
1.1
2.
3.
5.
2
General Information
3
2.1
2.2
2.3
2.4
3
3
4
5
Introduction to the Straumann® Variobase™ Abutment
Technical requirements
System overview
Product characteristics
Restoration, design and finishing
3.1
3.1.1
3.2
3.2.1
3.2.2
3.2.3
3.2.4
3.3
3.4
4.
Purpose of this guide
2
Preparation
Fabrication of the master cast
Design and fabrication of a coping/crown
Scanning and designing with a scanbody
Scanning and designing with a wax-up
Milling Finishing of the coping/crown in dental laboratory
Bonding
Insertion (dentist’s office)
6
6
6
7
7
8
9
10
10
12
Auxiliaries and instruments
13
4.1
4.2
4.3
13
13
13
SCS Screwdrivers
Ratchet
Polishing aids and analog holder
Important guidelines
14
1
1. Introduction.
1.1
Purpose of this guide
This guide was created for dental technicians and dentists working with the Straumann® Variobase™ Abutment
for designing screw-retained or cement-retained customized abutments and cement-retained bridges (via
mesostructure). It provides step-by-step information on working with the Straumann Variobase Abutment.
Warning/Pre-Caution
Failure to follow the procedures outlined in these instructions may harm the patient and/or lead to any or all
of the following complications:
• Aspiration or swallowing of a component
• Breakage
• Infection
Note
Implant-borne superstructures require optimal oral hygiene on the part of the patient. This must be considered
by all involved parties when planning and designing the restoration.
Consult the brochure Basic Information on the Surgical Procedures – Straumann Dental Implant System for
information on indications and contraindications of Straumann implants, such as the required minimum
number of implants, implant type, diameter and loading protocols.
2
2. General information.
2.1
Introduction to the Straumann® Variobase™ Abutment
The Straumann Variobase Abutment provides dental laboratories with the flexibility to create customized
abutments through their preferred workflow. In addition, the Straumann Variobase Abutment comes with
the benefit of the original Straumann connection and the unique Straumann engaging mechanism.
For intended use and indications for use, please refer to the instructions for use.
2.2Technical requirements for digital workflow
Straumann Variobase Implant Kit
To facilitate the precise design of the interface between the
Straumann Variobase Abutment and the coping, a specific digital
Straumann Variobase Implant Kit is required with your software
platform. The kit consists of an open STL file containing the required
coping geometry.
The Straumann Variobase Implant Kit is available from Straumann
on request.
Note
The Straumann Variobase Implant Kit only provides the geometry of the coping for the Straumann ­Variobase
Abutment.
Software
To design using the Straumann Variobase Abutment for digital workflows, CAD software containing the
Straumann Variobase Implant kit can be used. Please follow the instructions of the CAD software provider.
Please contact Straumann for more information regarding availability.
Milling
Once the coping is designed using CAD software, the resulting STL file is sent to Straumann.
Milling is available for customers with the Straumann CS2 scanner or the CARES® prosthetic app for Dental
Wings scanners.
3
2.3System overview
The Straumann® Variobase™ Abutment covers the following Straumann implant platforms.
NC
RC
NNC
RN
WN
025.2101
025.4101
048.127
048.124
048.124
025.2915
025.4915
048.173
048.168
048.169
025.2921
025.4921
048.709
048.710
048.711
023.2756/
023.2756-041
023.4759/
023.4759-041
048.267/
048.267V41
048.268/
048.268V41
048.269/
048.269V41
025.2900
025.4900
048.313
048.356
048.356
Analogs
Scanbodies
Variobase
Abutments
Burn-out
copings
Auxiliary
screws
1
Article numbers ending in V4 or in -04 contain 4 burn-out copings in one pack.
4
2.4
Product characteristics
Reliability
• The original Straumann® implant-abutment connection
• Strong retention of the coping with a patented 2 engaging
mechanism
• Extra bonding surface with 4 cams
Efficiency
• Variobase™ STL data available for various CAD software platforms
• Easy and precise wax-up process with accurate burn-out copings
• Compact base dimensions for design flexibility
• Simplified bonding process
• Skip the sandblasting process
• 4 cams facilitate precise positioning of the coping
Cost-effectiveness
• Use the CAD software of choice, and send to Straumann
2
Patent pending.
5
3. Restoration, design
and finishing.
3.1Preparation
Prerequisites
• The tooth shade has been identified
• The impression has been taken
• Shade information and impression have been sent to the dental lab
3.1.1Fabrication of the master cast
To ensure high-quality restorations, fabricate the master cast
using standard methods and type-4 dental stone (ISO 6873).
Adhere to the following requirements:
• Use new, undamaged and original Straumann implant analogs
• Embed the implant analogs in the stone; the analogs must not
move in the model
• Always use a gingival mask to ensure the emergence profile is
optimally contoured
• Use scannable material for the gingival mask
6
3.2Design and fabrication of coping/crown
3.2.1SCanning and designing with a scanbody
Step 1 – Assembling
Check for proper fit of the scanbody in the analog and
hand-tighten the self-retaining screw (maximum 15 Ncm). Use the
Straumann® SCS Screwdriver to fix the post in the analog. Check
again for proper fit and for any rotational or vertical looseness. If a
single-tooth restoration is planned, orient the angled surface of the
scanbody buccally (not adjacent to the approximal tooth). Avoid
any contact of the scanbody to the proximal teeth.
Step 2 – Scanning and modeling
Follow the software provider’s instructions on how to scan and
recognize the scanbody. Design the coping or crown following the
software provider’s instructions.
7
3.2.2SCANNING AND DESIGNING WITH A WAX-UP
Step 1 – Placing of the Straumann® Variobase™ Abutment
Place the Straumann Variobase Abutment on the analog and handtighten the screw (maximum 15 Ncm). Use the Straumann SCS
Screwdriver to place the abutment on the analog. Check again for
proper fit and for any rotational or vertical movement.
Step 2 – Assembly of the burn-out coping
Attach the burn-out coping to the Straumann Variobase Abutment
and check for proper fit.
Note
Working with the burn-out coping supports a clean and sharpedged finish of the screw channel and a good fit to the S
­ traumann
Variobase Abutment.
Note
The burn-out coping should be free of any rotational or vertical
movement.
Step 3 – Shortening of the burn-out coping
Shorten the burn-out coping to the height of the occlusal plane
according to the individual circumstances.
Note
Ensure that the shortened burn-out coping still covers the
Straumann Variobase Abutment completely.
8
Step 4 – Wax-up
Contour a wax-up according to the individual anatomical situation.
Note
• Make a reduced anatomic design or a full-contour design
depending on the indications of the dental material used
• Ensure that the wax layer on the abutment is sufficiently thick
• Respect the minimal wall thickness of the respective dental
material used according to the manufacturer’s instructions
Step 5 – Scanning and Modeling
Follow the software provider's instructions on how to scan and
recognize the wax-up. Complete design of the coping following the
software provides instructions.
3.2.3Milling
Preparation for milling
Transfer design data to Straumann by following the instructions of
your CAD software provider.
Note
• Use the proper settings per material following the instructions
of your CAD software provider
• In lab milling or third party milling is not indicated and will void
the warranty
9
3.2.4FINISHING of the coping/crown
in dental laboratory
Step 1 – Finishing of the coping/crown
Use standard procedures to finalize the coping or crown.
Note
• The coping or crown to be bonded to the Straumann®
Variobase™ Abutment must be finalized before bonding
• For cement-retained restorations, the crown can be made and
finalized after the bonding step
3.3Bonding
Step 1 – Seating on master model
Seat the Straumann Variobase Abutment on the implant analog in
the master model with a screw (hand-tight). Seal the screw channel
with wax to prevent excess cement from flowing into the screw
channel.
Note
Due to its patented* engaging mechanism, it is not necessary to
sandblast the Straumann Variobase Abutment to obtain a strong
bond.
Always bond on the master model to ensure precise seating of
the coping or crown on the Straumann V
­ ariobase Abutment.
Due to the symmetrical nature of the four cams, confirm the
position of the crown according to the individual patient anatomy
prior to bonding.
* Patent pending.
10
Step 2 – Bonding
Apply self-adhesive dental cement 3 on the Straumann® Variobase™
Abutment. Follow the cement manufacturer’s instructions. Bond
the coping to the Straumann Variobase Abutment.
Note
• Immediately remove excess cement from the abutment. Polish
the lower margin of the coping after the cement has dried
• Always use a polishing aid to protect the abutment’s prosthetic ­
connection
Warning
• Do not fire the abutment after bonding
3
Tested with Panavia™ F2.0 resin cement by Kuraray and a zerion® (zirconium dioxide)
coping by Straumann.
11
3.4
Insertion (dentist’s office)
The final restoration is fixed on the master cast before it is delivered to the doctor’s office.
Step 1 – Preparation
• Remove the healing cap or temporary restoration
• Remove the superstructure from the master cast and unscrew the abutment from the analog
• Clean and dry the interior of the implant and the abutment thoroughly
Note
Always ensure that surfaces of threads and screw heads are clean and that a new screw is used for the final
restoration.
Step 2 – Final insertion
Option A: Screw-retained final restoration
• Position the sterilized Straumann® Variobase™ Abutment with
the coping in the implant. Tighten the screw to 35 Ncm using
the SCS Screwdriver together with the ratchet and the torque
control device
• Close the SCS screw channel with cotton and sealing compound
(i.e. gutta-percha). This allows for later removal of the
Straumann Variobase Abutment in case a crown replacement
should be required
Option B: Cement-retained final restoration
• Position the sterilized Straumann Variobase Abutment in the
implant. Tighten the screw to 35 Ncm using the SCS Screwdriver
together with the ratchet and the torque control device
• Close the SCS screw channel with cotton and sealing compound
(i.e. gutta-percha). This allows for later removal of the
Straumann Variobase Abutment in case a crown replacement
should be required
• Cement the superstructure to the abutment
• Remove excess cement
12
4.Auxiliaries
and instruments.
4.1SCS Screwdrivers
Art. No.
Article
Dimensions
Material
046.400
SCS Screwdriver for
ratchet, extra short
Length 15 mm
Cronidur® 30
046.401
SCS Screwdriver for
ratchet, short
Length 21 mm
Cronidur 30
046.402
SCS Screwdriver for
ratchet, long
Length 27 mm
Cronidur 30
4.2Ratchet
Art. No.
046.119
4.3
Article
Ratchet includes
service instrument
Dimensions
Length 84 mm
Material
Stainless steel
Polishing aids and analog holder
Art. No.
Article
Dimensions
Material
046.245
Polishing protector
for RN synOcta®
Copings, transocclusal
screw-retained
Length 15 mm
Stainless steel
025.2920
025.2920-04
NC Polishing aid
Length 16 mm
Stainless steel
025.4920
025.4920-04
RC Polishing aid
Length 16 mm
Stainless steel
046.239
Analog holder
Length 105 mm Al/Steel
13
5. Important Guidelines.
IMPORTANT GUIDELINES
Please note
Practitioners must have appropriate knowledge and instruction in the
Please note
handlingPractitioners
of the Straumann
CADCAM products
orand
other
Straumann
must have appropriate
knowledge
instruction
in the
productshandling
(“Straumann
Products”)CADCAM
for usingproducts
the Straumann
Products
of the Straumann
or other Straumann
safely and
properly
in accordance
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for use. Products
products
(“Straumann
Products”)
for instructions
using the Straumann
Explanation of the symbols on labels and
instruction leaflets
Explanation of the symbols on labels and instruction leaflets
Batch
code
Batch
code
safely and properly in accordance with the instructions for use.
Catalogue
number
Catalogue
number
The Straumann Product must be used in accordance with the instrucThe Straumann Product must be used in accordance with the
tions for use provided by the manufacturer. It is the practitioner’s
instructions for use provided by the manufacturer. It is the practitioner’s
responsibility to use the device in accordance with these instructions
responsibility to use the device in accordance with these instructions
for use and
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used only in conjunction with the corresponding original components
and instruments distributed by Institut Straumann AG, its ultimate
and instruments distributed by Institut Straumann AG, its ultimate
parent company and all affiliates or subsidiaries of such parent
parent company and all affiliates or subsidiaries of such parent company
company (“Straumann”), except if stated otherwise in this document
(“Straumann”),
if stated
otherwise
in this document
in the
or in theexcept
instructions
for use
for the respective
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other obligation, express or implied, of Straumann.
Availability
Availability
Some of the Straumann Products listed in this document may not be
Some of available
the Straumann
Products listed in this document may not be
in all countries.
available in all countries.
Caution
Caution In addition to the caution notes in this document, our products must
be to
secured
againstnotes
aspiration
used intraorally.
In addition
the caution
in thiswhen
document,
our products must be
secured against aspiration when used intraorally.
Validity
Upon publication of this document, all previous versions are
Validity superseded.
Upon publication of this document, all previous versions are superseded.
Documentation
For detailed instructions on the Straumann Products contact your
Documentation
Straumann representative.
For detailed
instructions on the Straumann Products contact your
Straumann representative.
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and/or
and
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areauthorization
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of
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written
Straumann.
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Holding
AG
and/or
itsStraumann®
affiliates.
and/or other
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are the trademarks or registered trademarks of Straumann Holding AG
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14
Non-sterile
Non-sterile
Refer
to package
insert
Refer
to package
insert
0123
Straumann Products with the CE
Straumann Products with the CE mark fulfill
mark fulfill the requirements of the
the requirements of the Medical Devices
Medical
Devices
Directive
Directive
93/42
EEC 93/42 EEC
Consult
instructions
Consult
instructions for
for use
use
Manufacturer
Manufacturer
© Straumann USA, LLC 2014. All rights reserved.
Straumann® and/or other trademarks and logos from Straumann® that are mentioned herein are the trademarks or registered trademarks of Straumann Holding AG
and/or its affiliates. All rights reserved.
3/14
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