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Technique
for The Solder Retention Cap
Benefit:
- A strong solder connection to the cast
metal frame is used when vertical space is limited, or the patient exhibits a
very strong bite.
| M3: 694AS
M2: RE0061 |
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| Glaze porcelain and polish all metal (FIG
1). The REH5 Lab
Key (FIG 2) is used to thread the original spring pin in to the solder cap (FIG
3). If spot
welding, thread the non-retentive H1 dummy male in to the solder cap. |
| Cover the inclined arm of the female with 0.5mm of wax, and
place the metal space maintainer on the female (FIG
4). Block out all undercuts with
wax. Cover the sides of the solder cap with a thin layer of wax (FIG
5). Do not
cover any milled shoulders with block out wax, as an accurate fit of the lingual arm is
important (FIG 6). |
| Stop the relief wax short of the attachment to provide a
beading strip for the acrylic resin of the removable prosthesis. No relief wax is
necessary on the tissue between the cuspid and
molar (FIG 7). The accurate refractory model (FIG
8 &
9). |
| During wax up, the attachments are covered in wax (FIG
10).
Leave an opening over the retention pieces (FIG
11) for solder to be applied later
(FIG 12). |
| Finish and polish the inside of the metal sleeve prior to
soldering (FIG 13). The oxides created during soldering are easily removed from the
highly polished surface (FIG
14). Grind the solder cap retention piece into a square
shape with undercuts for good retention in burn out acrylic pattern resin (FIG
15). |
| Use the metal space maintainer when assembling the attachment
(16). The assembled attachment: the male must be firmly seated with no movement
(17). Cut a slot in the cast metal frame to allow space for an adhesive pattern
resin (18).
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T0005.REV.00
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