wpe1E.jpg (6629 bytes)

Overdenture System

Female in the post-coping (bonding technique)

 
wpe111.jpg (19673 bytes)
The attachment female in the post coping and the adjustable spring pin in the removable prosthesis.

Advantages:

  • May require less vertical space
  • Provides a more stable prosthesis
  • Easier to service

 

Fabrication of the post coping: Bonding Technique

1wpe122.jpg (2088 bytes)

2wpe11A.jpg (11708 bytes)

3wpe123.jpg (11264 bytes)

Wax up the post-coping as low as possible (FIG 1).  Use the (RE for M2) P7 paralleling mandrel for the green plastic female.  Position the model parallel to the occlusal surface to parallel and position the green plastic keeper (FIG 2).  To provide space for the denture tooth in the removable prosthesis, wax the coping concave (FIG 3).
4wpe124.jpg (12354 bytes) 5wpe12B.jpg (15555 bytes) 6wpe12A.jpg (11671 bytes)
After casting and finishing of the post-coping, blast the inside of the female with 110u aluminum oxide (FIG 4).  Use the RE P2/5 mandrel to position the titanium female in the post coping.  Place the titanium female on the RE P2/5 mandrel and blast it with 110u aluminum oxide (FIG 5).  Do not touch the female afterwards.  Mix Ceka Site in equal amounts (1:1 ratio) of catalyst and base material (FIG 6).
7wpe125.jpg (13182 bytes) 8wpe126.jpg (13501 bytes) 9wpe127.jpg (9849 bytes)
Apply an adequate amount of Ceka Site.  Be sure the females are parallel and without contact or friction with the post coping (FIG 7).  Allow a full 10 minutes setting time (FIG 8).  Be sure to make a new mix of Ceka Site for each unit.  The rounded shape of the coping provides for easy patient cleaning and hygiene maintenance (FIG 9).

wpe128.jpg (12317 bytes)

The finished post-copings.

The attachments must be parallel to provide a service-free prosthesis.

The next step: processing the male into the prosthesis

T0029.REV.00