Fitting the appliance:
1.
Heat one of the trays in a boiling water bath for about 3 ½ minutes with the outer tray shell facing the bottom. As the tray heats up the thermoplastic filling
will become clear and the tray will rise to the surface.
Note:
We recommend to use a mirror if you fit the appliance yourself.
2.
Use a spoon or a small pliers to take the tray out of the water. Carefully shake off any excess water by only holding the fixation knobs of the rigid tray
shell. Allow it to cool for 15 seconds. Make sure that the thermoplastic material does not cause burns whilst still being mouldable.
Note:
Nitrile gloves are
most suitable for the fitting.
3.
Place the tray
centrally
over the upper teeth with the marker on the front edge between the front teeth and the front teeth as close to the front of the tray
as possible. Press the bottom of the tray from the front to the rear firmly against the teeth using your thumbs and forefingers. Then close the mouth and
bite down until the upper teeth touch the bottom around the whole tray to create deep teeth impressions.
Note:
Drink some warm water in advance so that
your teeth get used to the warmth.
4.
Keep the upper and lower jaw closed and use the fingers to firmly press excessive thermoplastic material at the outer sides of the tray against the teeth
and gums. Slightly open the mouth and use the fingers to press excessive thermoplastic material at the inner sides of the tray against the teeth, gums and
the palate. Keep the tray in place for another 30 seconds before carefully removing it from the mouth by touching the fixation knobs of the rigid tray shell.
5.
In a still warm and mouldable condition, cut off excessive thermoplastic material beyond the edge of the rigid shell,
preferably with a pair of curved scissors (Fig. 2 [1]). Leave some excess material up about 2
–
4 mm beyond the
edge at the inner sides of the tray (Fig. 2 [2]). Beyond the last back tooth (molar) excess lining should be flat along
the bottom surface of the rigid tray shell (Fig. 2 [3]).
6.
Let the tray cool down for a few seconds in a cold water bath to harden the lining.
7.
Heat the second tray in a boiling water bath for about 3 ½ minutes and allow it to cool for 15 seconds (steps 1
–
2).
8.
Place the moulded upper tray on the upper teeth first. Then place the heated lower tray
centrally
over the lower
teeth
with the front marker of the lower tray in a vertical alignment with the marker of the upper tray and the lower
front teeth as close to the front of the tray as possible. Bite down until the teeth touch the bottom around the whole
tray to create deep teeth impressions.
Fig. 2
9.
Keep the upper and lower jaw closed and use the fingers to firmly press excessive thermoplastic material at the outer sides of the tray against the teeth
and gums. Remove the upper tray from the mouth. Keep the lower tray stable and stick out the tongue so that the frenulum of tongue leaves its
impression in the material. Then slightly open the mouth and use the fingers to press excessive thermoplastic material at the inner sides of the tray
against the teeth and gums. Keep the tray in place for another 30 seconds before carefully removing it from the mouth by touching the fixation knobs of
the rigid tray shell. The following procedure corresponds to step 5
–
6.
10.
For those with a normal bite attach a pair of the 29 mm long connecting straps at the front fixation knobs of the upper tray and the rear fixation knobs of
the lower tray. The embossed strap length should face inwards and should not be visible on the reverse side. Use shorter or longer straps for those with
an abnormal bite or to set the required advancement of the lower jaw.
Note:
There should be no lining residues around the fixation knobs (Fig. 2 [4]). If
you see any residue, heat only the exterior rigid wall around the knob and remove it carefully.
11.
If one of the trays does not fit perfectly, heat it in the boiling water bath for about 10
–
15 seconds and let it cool for a few seconds. Place the oral
appliance carefully in the mouth without changing the teeth impressions of the first fitting. Suck in and swallow the saliva. Massage the cheeks from the
outside to achieve an optimal fit. Remove the appliance after 30 seconds from the mouth and let it cool down in a cold water bath.
Note:
-
Rough edges can easily be removed by dipping the appliance briefly into a hot water bath and then smoothing the edges with a wet finger.
-
Those fixation knobs not needed for fastening the straps can be removed with nipper pliers. Rough edges should be smoothed with a file.
Setting the lower jaw advancement:
At the beginning of the treatment, the lower jaw advancement should only correspond to approximately 50 % of the maximum
possible advancement. If necessary, the advancement can slowly be increased as you adapt to wearing the device. For this purpose use the next shorter connecting
straps.
Doc. No.: UI.SPS.0221.GE.01
