|
|
|
Implant Supported |
 |
Root Supported |
Benefits:
- No abutment
parallelism required. Corrects up to 24º
divergency.
- Lowest force
application on abutments.
- Applicable for direct
placement into root, cast coping for root, or custom keeper for implants.
- Easiest patient
insertion and removal--no path of insertion.
- Space friendly--2
sizes available.
- Double encapsulation
ensures no corrosion.
Laboratory Instructions
Dentist Instructions
Cast Coping
A precious metal coping may be cast directly against the
regular and mini toothpiece keepers. An alternative cast coping technique is to bond
the keeper into the cast coping using Ceka Site anaerobic composite bonding resin.
Direct Cast to Technique
1
|
1. Wax the coping directly to the
appropriate keeper. If the regular size keeper is selected, the post portion may be
cut off or shortened with a disk. The keeper should be slightly elevated above the
coping. |
2a |
2b |
| 2.
Place the casting insert into the occlusal index of the
keeper.
Remove the pattern from the die. Sprue, invest, and burn out.
The casting insert holds the toothpiece in position after wax elimination.
|
|
3a |
3b |
|
3.
Complete the casting using a precious or semi-precious alloy.
Carefully devest the casting. |
|
4a |
4b |
|
4.
Remove the casting insert. Protect the occlusal surface of the keeper
with wax or rubber prior to any sandblasting, chemical stripping, rubber
wheeling, or polishing. The occlusal surface of the stainless steel
keeper will oxidize during burnout and casting. The oxide is best
removed with a Fiberglass Pencil, or by polishing lightly with a soft rag
wheel. Do not
rubber wheel the occlusal surface. |
Bonding Technique
Lubricate the keeper. Wax the coping around the
keeper. Position the keeper slightly above the occlusal of the coping. Remove
the keeper from the wax coping ( either a black impression piece or casting insert
provides an easy to use handle). Remove all the wax from the keeper.
Sprue, invest, burnout, and cast the coping in the alloy
of choice. Finish the casting.
Sandblast the recess in the coping to receive the
keeper. Thoroughly clean the recess with a steam cleaner.
The surface must be totally clean to achieve the desired bond.
1 |
1. Use an impression piece in the
occlusal index of the keeper as a handle and sandblast the underside of the keeper.
Thoroughly clean the keeper with a steam cleaner. Do not
touch the keeper. The surface must be totally clean to achieve the desired bond. |
2 |
2.
Mix equal parts of Ceka Site base and catalyst (1:1).
Place the Ceka Site in the clean recess of the cast coping. Carefully
position the keeper into the coping recess with the Ceka Site--since this is an anaerobic
bonding agent, it will set and bond in the absence of air. Allow it to set for 5
minutes. Wipe away any excess Ceka Site from the cast coping. |
Please note: when bonding multiple keepers, make a fresh batch of Ceka Site for
each bonding. Although the setting time is 5 minutes, the working time is
only 2 minutes. Ceka Site left on the mixing pad for over 2 minutes will not bond
properly.
Send the coping(s) to the dentist for try-in and cementation.
Model Preparation
1a |
1b |
| 1.
Inspect the impression to be sure that no impression material is on the surface of the
black impression piece. Using curved beak cotton pliers, firmly seat and index the white
model piece to the black impression piece. Pour the model or master cast in an accurate hard stone. Avoid excess vibration
which could dislodge the white model piece from the impression piece.
|
2 |
2.
When the model is separated from the impression
(and black impression piece), the white
model piece will be in the exact location of the keeper(s).
|
Occlusal Rim--Bite Block
3 |
3.
Position the black threaded processing piece in to the white
model piece on the model. This will provide the necessary space requirement for the
magnet in the finished prosthesis. |
Fabricate the occlusal rim, or "bite block." Using the appropriate
Shiner Magnet tool, unthread the black processing piece and send the occlusal rim to the
dentist.
Base Plate and Try In
Position the black threaded processing piece into the white model piece on the model.
Complete wax set-up. Carefully remove the black threaded processing piece from
the wax set-up using the appropriate Shiner tool. Send to the dentist for try in and
approval.
Acrylic Resin Processing
Do not process the magnet into the Prosthesis.
4 |
4.
Upon approval and return of the wax set up, place the black threaded processing piece
over the thin
metal protector disk and on to the white model
piece.
This will eliminate
acrylic resin from entering the holes in the processing piece.
Position the threaded
processing piece in the white model piece. Reseat the wax set-up on the model.
|
5a |
5b |
| 5.
Flask and boil out ( a pour resin or injection resin technique may be used). Check to be sure that the black threaded processing piece is firmly positioned in the
white model piece. If necessary, cement the black processing piece into the white
model piece. The chemical bond will break during boil out.
Paint the model and black processing piece with separator. Use a very small
amount of separator on the threaded area of the processing piece--you do not want
to alter the thread pattern in the resin. Process the denture base material in the
technique of choice.
After denture base processing, equilibrate the prosthesis. Break away the model,
finish, and polish.
|
6a |
6b |
| 6.
Use the Shiner AF Bur in a handpiece at slow speed to remove any flash acrylic resin.
The recess in the AF Bur will fit over the post of the black threaded processing
piece. The AF Bur will remove acrylic from an area slightly larger than the
processing piece to facilitate removal of the thin metal protector disk and the black
threaded processing piece. Use a small instrument to remove the thin metal
protector disk. |
7a |
7b |
|
7. Unthread the processing piece using the pin end of the
(blue = regular, gold = mini) tool. The AF Bur will
remove any flash acrylic from the processing piece. |
|
8
|
8.
The threaded recess for the final magnets has been created in the
new prosthesis. |
|
9a |
9b
 |
9. Using the appropriate tool (blue =
regular, gold = mini), carefully thread the magnet (s)
into the prosthesis.
Go slow: Do not force the magnet into the prosthesis. If the magnet does not easily thread in to the prosthesis,
check for flash resin at the starting edge of the threads. Remove any
flash with a bard parker blade or other sharp instrument.
Do not attempt to thread the magnet too far or too tight into the
prosthesis. As soon as the magnet is finger tight, stop
threading. Excess force may damage either the outer threaded Delrin
housing or the magnet.
|
|
10 |
10.
Deliver finished prosthesis to the dentist. Be sure that the dentist has the
proper Shiner tool to adjust the magnet to keeper position (i.e. retention). |
T0017.REV.00
|
