Coltene Pindex System Guide D'utilisation page 4

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II. Placing pins and sleeves
1. Place a small amount of cyanoacrylate cement into a depres-
sion in a small piece of soft wax (Fig. 11).
2. Each Pindex Pin is lightly dipped into the cement and seated into
the appropriate pin hole. For convenience and accessibility, the
short Pindex Pins and dual pins are cemented first (Fig. 12). The
dual pin must be aligned so that the anti-rotational rib fits into
the groove in the model (Fig. 12). The long Pindex Pins are then
cemented into place (Fig. 13).
3. The grey sleeves are placed on the short pins (Fig. 14).
4. The metal sleeve is placed on the dual pin (Fig. 15).
5. The white sleeves are placed on the long pins (Fig. 16). When
used, the brown or yellow sleeves are placed over the medi-
um pins.
6. The flat part of the sleeve should face the flat part of the
other sleeve in each die.
IV. Pindex die model base fabrication
1. Place carding wax over the extension of the long pins. It
should be wide enough so that it can be positioned to close
over the sleeve openings of the short pins and the dual pins
(Fig. 17 and 18).
2. Insert mounting template pins through holes in rubber mold.
Place an articulating sleeve onto each pin.
3. a. For patient and/or doctor identification, insert aluminum
I.D. strip provided (Fig. 19) into the grooves with typed
side facing the mold wall and the extensions bent inward
(Fig. 20). The mold is now ready for base fabrication (Fig.
21).
b. Laboratory name and logo can be displayed by permanently
cementing a rubber stamp into the recess provided in the flex-
ible mold.
4. Lubricate model.
5. Carefully vibrate stone under carding wax and around pin
sleeves (Fig. 22).
6. Fill rubber mold with stone (Fig. 23).
7. Carefully seat die model to place (Fig. 24) and wipe away
excess stone. Allow to set.
8. Separate articulating base plate from rubber mold (Fig. 25)
and separate model from rubber mold.
9. Trim excess stone on model trimmer (Fig. 26).
10. Snap articulating pins into sleeves (Fig. 27).
11. Lubricate and mount on articulator (Fig. 28).
12. Separate model from articulator by pulling up firmly (Fig. 29).
13. Strip away carding wax (Fig. 30) so that all pins and/or sleeves
are exposed (Fig. 31).
14. This creates a window which provides access to the Pindex
Pins, so that the dies can be pushed up for easy removal from
model (Fig. 32).
15. The finished master model with the pins can be removed in
one piece by pushing up on the pins using the corner of the
lab bench (Fig. 33).
16. Dies can be sectioned from the underside of the model using
the Pindex Handsaw (Fig. 34) and then snapping the final 2
mm of stone, preserving the interproximal margins (Fig. 35).
17. Dies can be sectioned in the conventional manner from above
using a fine blade in the Pindex Handsaw.
18. Dies are then individually trimmed and reassembled, ready for
wax pattern fabrication (Fig. 36).
V. Troubleshooting, maintenance
and service
Proper maintenance and care of your Pindex System drilling unit will
eliminate most of the cause for wear, replacement of parts or the
need for service calls.
Oiling and cleaning
All bearings throughout the machine are permanently lubricated
and require no additional servicing.
Frequently vacuum or brush away all accumulated debris and dust.
DO NOT USE AIR PRESSURE TO CLEAN THE MACHINE. The pressure
may force debris into moving parts.
The accumulation of grit and debris and infrequent cleaning are the
major causes for downtime, parts wear and frequent service calls.
Debris created during drilling operations must be frequently
removed. Brushing or vacuuming will adequately clear away all
debris, especially from the work table and drill chuck assembly area.
Surrounding the drill chuck assembly is a dust ring collector (Fig.
37). This ring collects a majority of the drilling debris and prevents
its migration to other parts of the apparatus. Carefully vacuum or
brush away the debris accumulation.
A clean instrument is the single most important assurance of con-
tinued accuracy.
Excessive pressure required
If a great deal of pressure is required to hold down the model
during drilling, inspect the drill carefully. It may be worn and require
replacement.
Do not lower the work table suddenly or too quickly. Use a slow,
gradual motion and always let the drill do the cutting.
Drill replacement
1. Disconnect plug from wall power outlet.
2. Depress work table lock and gently elevate until free from drill/
motor housing (Fig. 38, arrow 2).
3. Disconnect lamp connector leads.
4. Place shaft lock rod (Fig. 39) into shaft lock hole (Fig. 40,
arrow 4) as far as it will easily go. Gently rotate until the shaft
lock rod slides into the hole provided. This operation will lock
the drill chuck in position and prevent rotation.
5. Place chuck rod into the chuck lock hole (Fig. 37, arrow 5).
6. To open chuck, rotate chuck rod and knurled drill chuck
counter-clockwise until resistance is felt. Maintain pressure
while removing drill (Fig. 42).
7. Remove drill by hand. Replace with new drill, pressing down
firmly with a piece of soft wood until fully seated.
8. Rotate chuck rod and knurled drill chuck clockwise to lock drill
firmly in position.
Owner's Guide