Ivoclar Vivadent SR Phonares II - Manual (Page 29)

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Ensure that surfaces are free of dust, moisture and grease
before conditioning them. For this purpose, each individual
tooth should be cleaned with a steam cleaner and residual wax should be removed. When applying compressed air,
make sure that the system is free of oil.
A bonding agent is required for bonding the teeth to veneering
composites. Two bonding agents are suitable for this purpose:
1. Apply SR Connect onto the "bonding site" in a thin layer
and allow to react for 3 minutes. Then pre-polymerize in a
light polymerization unit according to the Instructions for
Use of SR Nexco.
2. Apply SR Composiv directly from the syringe onto the
"bonding site" and distribute to an even layer using a
spatula or disposable brush. Apply the material in a layer
thickness of at least 0.2 mm and no thicker than 0.5 mm.
The working time is approx. 3 minutes. Then, polymerize
the material in an Ivoclar Vivadent light-curing unit:
– Quick (60 s)
– Lumamat 100 (11 min)
– Spectramat (4 min)
Please refer to the Instructions for Use of the respective
material/device for more detailed information.
Roughen the bonding surfaces either with a cross-cut
tungsten carbide bur or by abrasive blasting with Al
2
O
3
(grit
size: 50–100 µm) at a pressure of 1–2 bar (15–29 psi). The
tooth necks should also be carefully roughened. Use
compressed air to remove residual abrasive dust.
Note:
• The difference between PMMA and NHC material can be
easily recognized during grinding: PMMA is softer and
produces shavings, while NHC is harder and produces
grinding dust. *
PmmA nhC
If the SR Phonares teeth are bonded to an auto-curing
denture base material, it is necessary to apply mechanical
retentions by grinding. The retentions are best performed with a round spherical bur to avoid sharp edges. Undercuts
can be created by swivelling the bur head.
Avoid excessive heat build-up when grinding.
After cleaning and roughening, wet the bonding surfaces
with monomer to allow the resin to expand and consequently
to strengthen the chemical bond. Use a brush to apply the
monomer selectively. Next, allow the monomer-wetted areas
to react for approx. 3 minutes. Avoid contamination after the
reaction time has elapsed. Note:
• After wetting with monomer, the teeth may no longer be
steam-cleaned.
* Avoid breathing in grinding dust – use dust evacuation equipment and breathing protection.
ComPletion