PART SELECTION (screw retained)
METAL SUBSTRUCTURE
Castable UCLAs
The basic building block for all metal based screw retained
restorations is a UCLA or also called cast on abutment.
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 abutments
from the original implant manufacturer or clone parts.
Indexed UCLA
Single restoration
UCLA abutments for single restorations have a anti rotational
indexing feature that engages the implant directly just like stock
titanium abutments. Engaging UCLAs can also be appropriated
for the manufacture of cast custom abutments.
Non indexed UCLA
Splinted restoration
UCLA abutments for splinted restorations do not directly engage
the indexing aspect of the implant. Non indexing UCLAs can only
be used for splinted frameworks.