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| Internal Hex Pin Screw Instructions
Horizontal screw retention of crowns and bridges in implantology, bars, and telescopic designs. |
Benefits:
- Easy Technique
- Horizontal Application eliminates gradual unthreading
- Esthethic--no screw on occlusal
- Forces are on the screw, not the threads
Pin Screw
Component/Kit Listing
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| Pin Screw 1.6mm
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Center Drill
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Hexdriver
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Screw Tap Holder
for holding screw tap/thread cutter |
Twist Drill 1.40
for drilling secondary crown |
Thread Cutter (screw tap)
for tapping the secondary crown |
Instructions
A set or locking screw
for dentist removable crown(s), bridges, or removable prosthesis over implant suprastructures
or telescopic castings. The Pin Screw is
primarily utilized horizontally for telescopic dentist removable prosthesis.
1. The primary
crown/coping or bar is waxed, cast, and finished.
Send out for try in and pick up in a new master impression.
2. The primary
crown/coping is lubricated and the secondary or removable crown is waxed.
When the secondary crown is to be porcelain fused to metal or resin to metal, be
sure that the area where the Pin Screw is positioned is metal--not
porcelain or resin. Minimum wall thickness should be 2.0mm.
Cast the secondary crown in a
precious or semi-precious alloy. Non-precious alloys are too hard for
cutting the channel and tapping the threads. Finish the secondary crown.
| 3.
Use the 1.40mm Ø drill to indent the
position for the Pin Screw (FIG 1).
DO NOT attempt to
dimple the primary crown at this time.
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| 4. Use the 1.40mm Ø Twist drill to refine the channel. Cut the channel
in the secondary crown. Angle the channel slightly upward (FIG
2).
Seat the secondary crown on the primary
crown/coping. Use the centering drill to cut a dimple or recess in
the primary crown (FIG 3). |
| 5. Put the 1.60mm thread cutter in the socket key and carefully cut the
threads in the secondary crown by hand (FIG 4).
Never attempt to use the thread cutter in a hand
piece. |
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| 6. Use the hex driver
to thread the Pin Screw through the secondary crown and into the dimple or
recess in the primary crown (FIG 5).
Carefully
cut off the excess length of the Pin Screw and rubber wheel into the contour
of the secondary crown. Be sure to leave access for the hex driver (FIG 6). |
T0022.REV.01
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