Further Information - Straumann Variobase Gebrauchsanweisung

9. Procedure
9.1 Use and handling of the Straumann®
Variobase® for the dental technician.
Caution: Always make sure to protect the abut-
ment's prosthetic connection by fixing the abut-
ment to either a Straumann® Polishing Aid or an
Implant Analog during lab procedures.
1. Fabricate the prosthetic restoration
The instructions for use of the material manu-
facturer shall be followed.
When using traditional workflow:
Place the abutments into the implant analogs
ѹ
or place the copings on the abutments on the
working model.
Fix the abutments to the implant analogs by
ѹ
tightening the basal screws hand-tight or fix the
copings on the abutment analogs by tightening
the occlusal screws hand-tight.
Fabricate the prosthetic restoration with
ѹ
press or casting techniques via wax-up. Use
Straumann® Burn-out Copings for Straumann®
Variobase® for Crown and Variobase® for Crown
AS which supports a clean and sharp-edged
finish of the screw channel and a good fit to
the Straumann® Variobase® for Crown and
Straumann® Variobase® for Crown AS.
When using a digital workflow:
Either import the digitized patient situation
ѹ
from the dental clinician intraoral scan (per-
formed preferably with Straumann® Mono Scan-
body to identify the positions and orientations
of the respective dental implants or analogs) and
design the prosthetic restoration, or
Create a master cast (working model) and
ѹ
use preferably Straumann® Mono Scanbody
to identify the positions and orientations of
the respective dental implants or analogs in
the CADCAM scanning procedure. Design the
prosthetic restoration by using the relevant
Straumann® Variobase® Implant Kits to facilitate
the precise design of the interface between the
Straumann® Variobase® prosthetic components
and the prosthetic restoration. The Straumann®
Variobase® Implant Kit consists of an STL file
containing the required milling template for the
inner geometry of the prosthetic restoration.
Process and finalize the prosthetic restoration
ѹ
according to the material manufacturer's in-
structions for use. Always finalize the prosthetic
restoration prior to bonding to the Straumann®
Variobase® prosthetic components.
A modified Straumann® Variobase® for Crown and
Straumann® Variobase® for Crown AS should only
be processed with the conventional workflow.
Processing
Process the coping or crown following standard
procedure according to the material manufac-
turer's instructions. Always finalize the crown
or coping prior to bonding to the Straumann®
Variobase® for Crown and Variobase® for Crown
AS.
Please note: It is not necessary to sandblast the
Straumann® Variobase®
a. Fix the abutment to the implant analog with a
screw (hand-tight).
b. Seal the screw channel with wax.
c. Apply self-adhesive dental cement on the
abutment. Only suitable self-adhesive cemen-
tation systems for the material used shall be
used. Follow the instructions for use of both the
dental material and cement/bonding material
manufacturer.
d. Bond the coping to the abutment.
e. Immediately remove excess cement from the
abutment and polish the lower margin of the
coping after the cement is set.
f. Optional: For cement retained restorations:
Make a crown following standard procedure
according to the material manufacturer's in-
structions and finalize it.
g. Clean the restoration prior to sending it to the
dentist.
h. Include this instruction for use when sending
the restoration to the dentist.
9.2 Use and handling of the Straumann®
Variobase® for Crown and Variobase® for
Crown AS for the Dentist.
Remove the restoration from the master cast or
the analog.
Clean, disinfect and sterilize the device as de-
scribed in sections 8 and 9 of this Instructions
for Use document.
Placing the restoration
a. Remove the healing cap or temporary resto-
ration.
b. Clean and dry the interior of the implant and
the abutment thoroughly.
c. Place the sterilized restoration into the patient's
mouth.
d. Make sure that the retentive elements of the
implant abutment connection are properly
aligned.
e. Use the screw delivered with the abutment to
screw the abutment into the dental implant.
Please note: Always ensure that the surfaces of
threads and screw heads are clean and that a new
screw is used for the restoration.
f. Straumann® abutments are fixed to the implant
using the Straumann® SCS screwdriver for the
Variobase® for Crown, the AS screwdriver for
the Variobase® for Crown AS, ratchet and torque
control device. Use the respective torque accord-
ing to the table below:
Device type Tightening
torque
Abutments 35 Ncm
(permanent)
Temporary 15 – 35 Ncm
abutments
Components on Hand-tight
implant analogs
For cement-retained restorations (optional):
g. Close the screw channel with cotton and sealing
compound (i.e., gutta-percha)
h. Apply self-adhesive dental cement on the two-
piece abutment. Only suitable self-adhesive ce-
mentation systems for the used materials shall
be used. Follow the instructions for use of the
cement/bonding material manufacturer.
i. Bond the crown to the two-piece abutment.
j. Immediately remove excess cement from the
two-piece abutment.
Warning
Torque values greater than 35 Ncm may result in
failure of the abutment and/or implant. Torque
values less than the recommended values may
result in loosening of the abutment, which may
lead to abutment and/or implant failure.
Please note
Once the Straumann abutment has been se-
cured to the implant using the indicated torque,
it should not be removed.
10. Healing phase
Temporary restorations enable the closure of
the implant connection for submucosal healing,
and allow sculpturing of the soft tissue during
transmucosal healing. After the soft-tissue heal-
ing phase, they are replaced with the appropriate
final restoration.
11. Magnetic Resonance Imaging (MRI)
Safety Information
These products are fabricated from a metal
material which can be affected by MRI ener-
gy. For further information refer to Straumann
publication 490.131, MRI Safety Information, at
http://ifu.straumann.com/ and selecting Gen-
eral Product Information at the top of the page.

12. Further Information

For additional information about the use of
Straumann products, please contact your lo-
cal Straumann sales representative or call
Straumann's customer service department or
visit www.straumann.com.
For additional information specifically on
Straumann® Variobase®, please consult Straumann®
Variobase®, Basic Information (702087/en).
Special
considerations
n/a
Tighten only to
35 Ncm if the
implant is fully
osseointegrated
n/a
3