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Preci Clix Instructions for Ball Retained Overdenture Attachments
Dentist Direct Placement Technique
In one appointment, an existing removable partial denture may be converted to a Preci Clix retained overdenture.
Benefits
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| 1227, 1228, 1229 burs | 1291C titanium Post | RE H2 | RE H14 |
| to prepare root
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seating and impression
tool
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female analogue
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| Screwdriver for male | 1206C Male | Large Tin Spacer | 1251B Space Maintainer |
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| 1222 Insertion Tool
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Female Retention Caps
Yellow=standard White = reduced Orange = increased
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Metal Housing for female
retention caps
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Ceka Bond Adhesive to
prevent gradual unthreading of males.
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Preci Clix Instructions for Ball Retained Overdenture Attachments
1 |
2 |
3 |
| Preparing
the Root and Placing the Post:
Following the endodontic treatment, the canal is prepared with the 1227 predrilling bur( Fig 1). The 1228 cavity bur is used next to prepare the canal for the base of the 1291 post ( Fig 2). Finally, the 1229 precision reamer is used to calibrate the canal for the diameter of the 1291 post (Fig 3). When using the burs, proceed at slow speeds. |
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6 |
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| Figure 4 shows the prepared root. Thread the RE H2 impression tool into the Preci Clix post (Fig 5) Using the RE H2 seating and impression tool as a handle, place the Preci Clix post into the canal and check the fit (Fig 6). | ||
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| Sandblast the Preci Clix Post prior to cementation. The RE H2 tool will protect the threads from cement (FIG 7-8). Cover the post and root surface with bonding composite. Seat the post. After the composite is set, polish the root surface with a fine sandpaper disk. Topical fluoride is often used to prevent decay (Fig 9). | ||
Laboratory Processing of the Female Attachments
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2 |
3 |
| Taking
Impression:
Leave the RE H2 in the cemented post, and make final impression. The RE H2 (Fig 1) will make an index in the impression. Unthread the REH2 from the post, and thread it in to the RE H14 model analogue (FIG 2). Index the RE H2/RE H14 in the impression (Fig 3) and pour the master model (FIG 4). |
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| Processing
the Female:
The RE H14 will be indexed in this model--exactly where the post and basering is in the mouth. (Fig 4). Unthread the RE H2 from the RE H14 that is indexed in the stone model. Use the Preci Clix screwdriver to thread the titanium Preci Clix 1206C threaded ball into the RE H14 (Fig 5). Place the tin spacer over the male (FIG 6). Important: Use the large tin spacer The large tin spacer is used over the attachment during processing to block out excess acrylic from locking in the attachment. The main reason for using the big spacer may be understood by viewing figures A and B. A Ceka overdenture attachment is used as an example. |
A |
B |
| Ceka attachment used
for example
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Ceka attachment used
for example
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| Figure A
is an overdenture fabricated without
the large spacer. This eliminates
all movement of the prosthesis--it is a rigid attachment.
As you can see, the denture base is in direct contact with the post and
attachment (arrow). Forces are directed to the post
and attachment.
Figure B is the same overdenture, only this time the large spacer was used. Using the large spacer allows for movement of the prosthesis--it is now a resilient (tissue bearing) attachment. During processing, the large spacer creates a free space between the prosthesis and the post and attachment to allow this free movement, and direct forces to the tissue. The greater the area the forces are spread over, the less force that is generated on the abutment.
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8 |
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| Place the 1251B black rubber space
maintainer over the large tin spacer and Preci
Clix 1206C Ball on the model (Fig
7). Figure
8 shows the placement of the Preci
Clix female into the Clix housing using the 1222 Clix insertion
tool. Placing the metal housing upside down on a flat surface
makes seating the female easier. Place the complete female unit onto
the Clix ball on the model (please note the 1251B space maintainer--Fig
9). Block out any undercuts.
Process the Clix female into the denture.
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11 |
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| Remove both the large tin spacer and black
rubber spacer. Remove the Preci Clix threaded male from
the model using the Clix screwdriver. Send
the prosthesis, screwdriver, and Clix threaded males to the Dentist.
In the operatory, put a drop of Ceka Bond on the male threads before threading it into the Clix Post (Fig 10). This will prevent gradual unthreading of the threaded male. Figure 11 shows the finished prosthesis. Figure 12 shows the 3 different retentions of Preci Clix females: standard retention (yellow), decreased retention (white), and increased retention (orange). |
Option 2: Chairside Pick-Up of the Female Attachments
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2 |
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| Put a drop of Ceka Bond on the male threads before threading it into the Clix Post (Fig 1). This will prevent gradual unthreading of the threaded male. Thread the ball in to the post in the mouth (FIG 2). Place the large tin spacer over the ball and contour the pliable tin spacer around the ball and gingival area (FIG 3). You may need to cut a slot in the tin spacer. View Figures A & B for a graphic explanation of the importance of using the large tin spacer.
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| Place the black rubber space maintainer
(FIG 4) on the ball, over the tin spacer
(FIG 5). Using the Preci Clix
female insertion tool, seat the Clix female in to the metal housing (FIG
6). It is easier to seat when the housing is face
up on a flat surface
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| 7
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Seat the complete female component over both the ball and both spacers (FIG 7). Block out any undercuts. |
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9 |
| The prosthesis is relieved, and checked
to make sure that there is no contact with the attachment or abutment (FIG
8). It is recommended to cut a "vent", or small
channel in the lingual side of the prosthesis to allow excess acrylic to
escape. A small amount of low viscous
self-cure resin is placed in the relieved area of the
prosthesis (FIG 9). It is recommended to pick-up all attachment females simultaneously.
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11 |
| The prosthesis is seated in the mouth for approximately 6
minutes (FIG 10).
Apply finger pressure only in the area of the attachments.
Do not have the patient close or bite. After the acrylic
resin has set, the metal housing is fixed in the prosthesis
(FIG 11). Remove
any excess resin. Also remove the tin spacer and black rubber spacer.
The female may be easily changed
in the metal housing to adjust retention.
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| 11 |
12 |
| Figure 11 shows the finished prosthesis. Figure 12 shows the 3 different retentions of Preci Clix females: standard retention (yellow), decreased retention (white), and increased retention (orange). |
T0034.REV.00
