PREAT Precision Attachments

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Sphero Flex Instructions

Benefits:

Self-paralleling spherical implant abutments
Corrects up to 15º divergence of implants
Easier Patient insertion
Reduced attachment wear

The Sphero Flex abutments in the mouth (FIG 1). With directional rings and female caps in place (FIG 2).

Use the Sphero Flex insertion tool to thread the attachments into the implants (FIG 3). To avoid the possibility of gradual unthreading of the attachments, it is recommended to place a small amount of Ceka Bond (FIG 4) on the threads of the attachment. Ceka Bond is an anaerobic, non-water soluble adhesive that will stop gradual unthreading of the abutments.

Direct Pick-up of Females

Position the correct directional ring (FIG 6) under the sphere (FIG 7) . The directional rings will help position the attachment so that optimum parallelism is obtained.

8	9
Place the retentive caps on to the spherical attachments. Check the position, and rotate each ring using the proper instrument (FIG 8) until optimal parallelism is found. Once the maximum parallel position is found, remove the caps and place the large tin spacer over the attachment (FIG 9). This will provide resiliency to the attachment, and prevent the prosthesis from prematurely contacting the abutment.
10	11

Using the Cap insertion tool (FIG 10), seat the nylon retention caps into the metal housing. Seat the complete female component on to the attachment (FIG 11).

Try the prosthesis in the mouth to verify the space in the prosthesis is large enough to facilitate incorporation of the female component. Cut a small escape vent in to the lingual side of the prosthesis. Fill the female area of the prosthesis with self curing resin (FIG 12) and seat in the mouth. Hold with finger pressure until the resin has set. Do not have the patient close and bite. After the resin has set, remove the prosthesis (FIG 13). Remove the tin spacers and refine any excess resin.

14a	14b
The finished prosthesis (FIG 14a-b). Remove the directional rings from the attachment.

Laboratory Processed

Using Sphero Flex Analogues:

Once the Sphero Flex attachments are placed, and the directional rings are seated, an impression is taken. The sphere will create a recess in the impression material. The Laboratory will seat the Sphero Flex Analogue into this recess in the impression and pour the model. Place the tin spacer on the attachment analogue, seat the retention cap into the metal housing, and place the complete female on the attachment. Block out any undercuts, such as the area between the tin spacer and the metal housing, and process into the prosthesis.

Using Implant Analogues:

Thread the Sphero Flex attachment in to the implant analogues in the model (FIG 15). As in FIG 5 and 6, select and position the appropriate directional rings to find optimal parallelism (FIG 16).

Place the Tin Spacers on to the attachment. Seat the nylon retentive caps in to the metal housings using the Cap Insertion Tool. Seat the completed female on to the attachment (FIG 17). Block out any undercuts, such as the area between the tin spacers and the metal housing. Process as usual into the prosthesis. Remove the tin spacers and directional rings. Remove any excess acrylic resin. The final prosthesis (FIG 18).

T0018.REV.00