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Look natural with
Gingivamoll!
Instructions
1. Impression Tray-Must use custom tray
1 |
2 |
Prepare a custom impression tray (vestibular).
Draw the outline of the tray on the study model. As a spacer, adapt wax or
paper (2mm thick) over the outlined area. Insulate the area as usual (FIG
1-2). |
3 |
4 |
| Form a tray out of cold-curing acrylic with a doughy
consistency, or adjust a prefinished plastic tray to the model. Place perforations
along the entire border of the tray (FIG
3-6). |
5 |
6 |
2. Impression Taking by Dentist
7 |
8 |
| Insert the tray for control (FIG
7). To aid in impression
taking, prepare a palatal stop in the mouth the same length as the mask is to be.
The stop should reach close to the incisal border (palatal). This is easy to
reposition in the impression (FIG
8). |
9 |
10 |
| After the stop has set, remove it from the mouth.
Reduce the interdental projections to 1/4 of the bucco-lingual length and reposition the
stop (FIG 9-10). On longer impressions, i.e. from molar to molar, it is recommended
that the interdental surfaces be painted with a separating medium ( Vaseline). |
3. Impression Taking with Elastic Material
11 |
12 |
| Coat the tray lightly with adhesive and allow it to dry
slightly. Mix impression material according to manufacturer's directions. Fill
syringe and tray with material from the same mixture. With the syringe material,
fill the interdental spaces and coat the necks of the teeth (FIG
11). Immediately
insert tray into place. Apply LIGHT pressure, and where indicated
use the lip to model the apical border of the impression. Avoid pressure points, as
the finished mask will be pushed away at these positions (FIG
12). |
4. Remove the Impression
13 |
First remove the palatal stop, then the tray and impression.
Avoid tearing the impression. Do not make interdental corrections on the
working model--it will effect the fit. Check the impression
(FIG 13). Remove excess
material, or unnecessary retention and sulcus borders with a fine pair of scissors.
Adhere the stop exactly to the impression with Cyanocrolate. |
5. Making the Working Model
14 |
It is important to have bubble-free hard stone. With a soft
pencil, draw the definitive outline of the mask (FIG
14).
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6. Modeling the mask
15 |
16 |
| With pink wax, fill and cover the interdental spaces and necks
of the teeth to their natural contours, staying within the pencil outline of the mask
(FIG 15). The mucogingival margin should be given its final thin and tapering
outline. Wax should be kept 0.5 mm thin. The surface
of the mask must also be given its final appearance and characterization (FIG
16). The
papillae, gingival margin, etc, must be modeled so that any differences to the
neighboring natural gingiva are not noticeable ( Based on cleaning requirements,
Stippling
must be omitted). Please note: After the material has set,
contouring and polishing is no longer possible. For this reason, special
attention must be paid to the waxing at this time. |
7. Embedding the model in the Flask
17 |
18 |
| Trim the model to the wax / neck of tooth border, or use a
plaster knife to trim close to this border (FIG
17). Don't leave any undercuts (
Exactness of fit on the neck of teeth). Embed as usual with white plaster, but the counter must be yellow stone
(FIG 18) because of the 40 bar/70 psi pressure. |
8. Pressform
19 |
20 |
| Boil out the wax and apply separating medium: Let both
parts cool for 3 minutes, the apply two coats of separator (FIG
19). Allow the form to
dry for at least 4 hours or overnight if possible. The packing procedure will be
made easier the longer the form has had to dry (FIG
20). |
9. Packing Procedure
21 |
22 |
| Place the Gingivamoll OPAQUE in the interdental spaces and on
the tooth necks. With a piece of polyethylene foil, press it in place. To
increase the lifelike naturalness, OPAQUE can be laid interdentally at this point
(FIG 21). Cut to shape Gingivamoll PINK or LIGHT PINK material. Lay the prepared
cover layer over the area of the gingival mask and place a piece of prepared foil
(FIG 22). Reduce tension by crumpling the foil. Close the flask. |
10. Pre-pressing
23 |
Within short intervals, apply pressure to the flask in order to
give the slowly flowing material time to adapt. Finally apply the mask. Apply
40 bar (70psi) pressure to the flask for about 10 minutes. Carefully open the flask
and remove any excess (FIG
23). Lay a fresh piece of stress-relieved foil over the
material and reapply pressure for approximately 5 more minutes.
Do not remove the foil. |
11. Polymerization
24 |
Pre-heat an Dry Air or Air Circulation oven to 150C / 320F
degrees. It is important to control temperature inside the oven with a thermometer. Allow time for flask and mold to heat
and polymerize for 45 minutes in dry air, or 30 minutes in air circulation
oven. Allow the flask to dry in cool air, never in water (FIG
24). |
12. Removing the mask from the model
25 |
26 |
27 |
Carefully open the flask, then remove the foil (FIG
25).
Spraying the mask with warm water will loosen it from the model. Take your
time when removing the mask from retention areas (FIG
26). A blunt spatula works well.
Use a sharp scalpel to trim the flash to within 1mm of the mask border (FIG
27). |
13. Re-using the Press Model for Reserve Mask
| It is always recommended to make an extra Gingivamoll Mask.
The intact form, repaired if necessary, should be cleaned with compressed air,
briefly rinsed with hot water ( 80C / 175 F), and allowed to dry. Apply a coat of
separator to the model part. It is best to wait at least 90 minutes before the
packing procedure can be done again. |
14. Finishing
28 |
The thin flash margin along the necks of the teeth should now
be removed with a sharp scalpel in one continuous cut. The reason for a continuous
cut is that the more tabs that remain from cutting, the greater the dangers of tears
developing. The apical margin of the mask in the region of the frenulum can best be
trimmed with fine scissors or a scalpel (FIG
28). The mask may now be tried in the mouth,
never on the model (loss of retentions). |
15. Staining the mask
29 |
Since Gingivamoll masks are very thin and almost opaque,
the mask picks up most of its color from the existing tissue.
However, the mask can be color shaded (pigment deposits) where necessary. The
mask must first be clean and dry. Color shades and liquids are included in the kit
(FIG 29). Let the pigments air dry.
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16. Protective Lacquer
30 |
31 |
| After the pigments have air dried, the protective finish
(lacquer) may be applied. Apply using rapid strokes with a fine brush ( No 2 brush,
use dappen dish--FIG 30). Do not allow any pools of liquid to form, as these could
adversely affect the fit. Please note: this lacquer causes stresses to build up in the prosthesis, particularly
along the thin flashes. To compensate for this stress, first paint the lacquer on
the buccal or outer surface of the prosthesis and then on the inner surface (FIG 31).
The bottle of protective lacquer must be CLOSED
immediately after each use. Air and warm
temperatures thicken the protective lacquer, making a chemical bond on the mask surface
impossible. Sealing the cap with wax is helpful to preserve the lacquer.
After applying the lacquer, place the prosthesis at room
temperature on a dust-free plate in the oven, increasing the temperature to a maximum of
130 C for 10-15 minutes. |
17. Correction-Repair Material
| It is possible to correct a defect or tear in the mask.
With a defect, such as impression error, a new impression of the
appropriate part as well as the model is necessary. Clean the area to be repaired
and apply activator liquid. Mix base and activator and apply where necessary on the
model. Set the mask in place immediately, cover with a piece of foil, and apply
light pressure. Polymerization can be helped by placing the mask in the oven for a
few minutes. Tears can be repaired in a similar manner on the original
model. |
Storage
| Gingivamoll should be stored in a refrigerator at 15C / 60F
and should be left at room temperature 30 minutes before use. |
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T0080.REV.01
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