PART SELECTION OVERDENTURE TYPE "B"
Intermediary abutment
Regardless of the production method (wax up or CAD-CAM), if the implants are set very deep (more than 2mm) under the tissue it
becomes necessary to place intermediary abutments specially designed for
screw retained restorations. These abutments are already placed by the
restorative dentist and impressed with special impression copings or
the laboratory will select appropriate collar height abutments for
screw retained restorations. The UCLAs as well as the analogs for
screw retained abutments are designed differently than UCLAs that
screw directly to the implant or fixture level analogs and are
not interchangeable.
Non indexing UCLAs
Bar type overdentures can be waxed and cast with non engaging UCLAs as
a Hader® bar, Dolder® bar or with attachments (Locator® by
Zest Anchors, O-ring,
SwissLok a.o.) on the frame. UCLAs are either manufactured with a machined metal abutment to
implant interface and a plastic tube processed to the metal
interface or all plastic. Some manufacturers machine the metal
interface out of titanium or a gold alloy. The gold alloy
interface will result in a better cast on bond than a titanium
interface. A all plastic UCLA is considerably cheaper than a
gold plastic combination but it sacrifices the precision fit of
machined UCLAs. Choose appropriate platform diameter
UCLAs from the implant manufacturer or
clone parts. Even severe implant angulation divergence
can be compensated with a bar set up. Vertical clearance needs to be
carefully evaluated to leave enough room for the denture acrylic.
Verification index
Modern CAD CAM technology enables the manufacture of titanium bars
machined from one piece titanium disks with much the same
attachment configurations as a waxed bar but without the purchase of
UCLA abutments or metal cost. As with a waxed bar the use of
intermediary abutments may be indicated. The abutment to
implant interface is machined in a non engaging fashion.
A verification index made
with non engaging metal temporary abutments is required since it is almost
impossible to laser weld a titanium bar. The verification index
needs to be tried in the patients mouth to ensure the working model
is exactly the same as the patient situation.
CAD CAM bar manufacturers
CAM StructSURE® bars for overdentures can be milled as
Dolder®, Hader® and primary bars for a large variety of implant
brands. Currently there are only options to have the bar pre taped for a wide
selection of attachments. The attachments then need to be ordered from a third
party ( Attachments
International ) and installed by the laboratory. Send only
the master model with the incorporated analogs, soft tissue
mulange, diagnostic wax up and verification jig.
Compatibility chart
and design options.
Procedure and laboratory manual.
Rx .
AccuFrame® bars can be milled as Dolder® and Hader® bars.
A Locator® bar is available but the cost for the Locator®
attachments is an extra charge. The list of supported implant
brands is limited and most have to be machined with intermediary abutments.
Send only the master model with the incorporated analogs, soft tissue mulange,
diagnostic wax up and verification jig.
Procedure manual,
RX.
Compartis® ISUS bars can be milled out of titanium and
chrome cobalt as Hader® or Dolder®bar and a small selection
of attachments is available for bar construction.
Attachments are charged extra. Send only the master model with
the incorporated analogs, soft tissue mulange, diagnostic wax up
and verification jig.
RX
Locator® and Hader® bars can be milled to of titanium.
Rx
Biocad produces the most beautiful finished titanium bars
for the widest selection of supported implant brands.
Hader® and Dolder® bars are possible.
Laboratories with Procera® capabilities are able to virtually
design the bar in house after sending the master model to Biocad.
Any attachment milled on to the bar is included in the price.
Send only the master model with the incorporated analogs, soft
tissue mulange, diagnostic wax up and verification jig.
Rx
Whip Mix can copy mill your design or virtually design and
mill titanium bars with Locators®. Direct to the implant or
with intermediary abutments for many implant brands and diameters.
Send only the master model with the incorporated analogs, soft
tissue mulange, diagnostic wax up and verification jig.
Rx