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AFFIXING MAGNETIC PLATES TO ARTICULATORS (other than Mounting Unit)

You will need:

*SPLITEX Calibration Key with Allen Wrench

*Pair of SPLITEX Magnetic Plates with one fully threaded and one partially threaded screw

*Pattern resin (powder and liquid)

* Petroleum jelly

* Shim-stock foil

1. Unscrew the black screws that hold on the plastic mounting plates on the top and bottom arms of the articulator. Break the plastic "O" ring that holds in the black screws, and remove any pieces of the "O" ring remaining in the hole. Discard the plastic plates and the black screws.

 

 

2. Fix: - the condylar inclination at 35° (if adjustable)

- the Bennett Angle at 15° (if adjustable)

- the incisal guidance pin at "0"

 

3. Tightly screw the mounting plate marked "TOP" into the top arm of the articulator, using the screw that is threaded only part way up the shaft.

 

 

 

4. Put a thin layer of petroleum jelly on the fixing screw of the bottom plate, and all varnished parts of the lower articulator that might come in contact with the pattern resin. DO NOT PUT PETROLEUM JELLY UNDER EITHER SPLITEX PLATE OR ON THE LOWER ARM!

Turn the articulator upside down.

 

 

5. While the articulator upside down, place the "TOP" of the SPLITEX calibration key into the top mounting plate (which is now on the bottom because you’ve turned over the articulator), and place the remaining mounting plate onto the calibration key. Before mixing the pattern resin, practice closing the articulator to ensure that lower arm clears the calibration key, and that the incisal guidance pin is in the correct position to come into contact with the incisal guidance table. Move the pin outward if necessary. Quickly close the centric lock.

 

6. Mix the pattern resin. Fill cup (supplied with resin kit) 3/4 with liquid, and add powder a little at a time until the mixture is the consistency of gravy. Note: pattern resin will harden within a minute when you reach this consistency.  

7. Overfill the thread and pin holes, as well as the milled groove of the lower mounting plate with pattern resin.

 

 

 

 

 

8. Carefully close the articulator until the frontal guidance pin is in contact with the frontal guidance plate. Quickly screw in the fully-threaded screw, and immediately remove any surplus pattern resin.

 

 

 

NOTE: The centric lock MUST BE CLOSED! Do not move the articulator until the resin has set completely -- about 5 minutes.

 

 

 

 

CHECKING CALIBRATION:  

Once the resin has hardened, turn the articulator right-side up. Remove the magnet from the upper mounting plate by using the tool provided. Place a piece of shim-stock foil over the beveled area of the calibration key. Close the articulator, and tug on the foil. If the foil offers resistance, the articulator is calibrated.

 

 

 

 

 
REMOVING THE MAGNETIC PLATES PRIOR TO RECALIBRATION:  
Note: Never subject a magnet to hot water or to any other heat source, as it will cause the magnet to lose some of its force.  

1. Remove magnet from lower Splitex plate, using the tool provided with the magnetic plates. Insert the threaded end of the tool into the threaded center of the magnet, and tip the tool to pull the magnet out.

 

 

 

 

 

2. Turn the articulator upside down, and carefully remove the screw holding the lower Splitex plate.  
3. Carefully knock the plate loose by tapping it from the bottom  
4. Place the Splitex plate (*WITHOUT THE MAGNET!) in very hot water.  
5. Leave the plate in hot water for about 5 minutes.  
6. Carefully remove the plate from the hot water.  

7. Hold the plate in a towel, and carefully scrape out the pattern resin. The resin should be soft enough to come out easily.

 

 

 

 

 

8. Place the plate in cool water to return it to room temperature.  
9. Replace the magnet, and recalibrate your articulator.  

Revision 1, 5/23/01