Ivoclar Vivadent SR Ivocap System - Manual (Page 6)

2
English
Instructions for Use
Product description
The SR Ivocap System is an injection technique, which has been
especially developed to compensate curing shrinkage.
Heat/pressure curing allows shrinkage of the acrylate during
polymerization to be compensated by inflowing material.
The SR Ivocap injection technique, therefore, permits the
fabrication of high quality products with excellent physical pro-
perties.
Composition
SR Ivocap High Impact
Powder:
Polymethyl methacrylate, Co-polymer, Benzoyl peroxide,
pigments
Liquid:
Methyl methacrylate, Dimethacrylate (cross-linking agent), Co-
polymer
SR Ivocap Clear
Powder:
Polymethyl methacrylate, Dibenzoyl peroxide
Liquid:
Methyl methacrylate, Dimethacrylate (cross-linking agent)
List of parts
SR Ivocap System
A) Pressure apparatus "ID2"
A1 =
Manometer
A2 = Extrusion piston
A3 = Vise shank
A4 = Safety loop
B) Clamping frame
B1 =
Thrust collar with lever
B2 = Pressure ring with lever
B3 = Pressing plate
C) Flask
C1 =
Flask half M
C2 = Flask half W
C3 = Flask lidl
C4 = Injection funnel
D) Capsule plunger
E) Investment aid
F) Funnel
G) Timer
Indication
SR Ivocap High Impact, SR Ivocap Clear
–
Complete dentures
– Partial dentures
– Bases and relines
– Orthodontic appliances
– Bite guard splints
Contraindication
–
Direct intraoral contact of unpolymerized material.
– If the patient is known to be allergic to any of the
components listed.
Important notes
–
Do not wet teeth with SR Ivocap monomer, as this will
weaken the bond to the tooth
– Soak models thoroughly before the investment
– Thoroughly isolate inner flask surfaces before the
investment
– Injection channels must have a diameter of 3–5 mm
– Thoroughly clean and isolate stone surfaces
– Observe polymerization and cooling times precisely
– Contact of solvents or monomer with the polymerized
denture base material can cause white discolouration
– If cervical areas have to be isolated when the SR Ivocap
procedure is used, Ivoclar Vivadent recommends Sil-Tech
®
Super. Other products may cause unfavourable reactions in
the denture base material.
Warnings
–
The monomer contains methyl methacrylate (MMA)
– MMA is highly flammable and irritating –
flash point +10 ºC / 50 ºF
– MMA irritates the eyes, respiratory organs and skin
– Contact may evoke sensitive skin reaction.
– Avoid prolonged or repeated contact of skin with
monomer and unpolymerized material. Commercial medi-
cal gloves do not provide protection against the sensitizing
effect of methacrylates.
– Do not inhale vapours
– Keep the material away from sources of heat – do not
smoke
– Do not dispose of the monomer in the drainage system
– Avoid electrostatic charging
Step-by-step procedure
Investment (lower flask half)
Place the investment aid (1) in the flask, mix the stone
and invest the thoroughly water-soaked model. Remove
excess stone from the thermal insulating component (2)
and the flask edges.
Placing the funnel
Remove the investment aid after the stone has set and
position the injection funnel (3) and the funnel (4) in its
place.
Injection channels
For complete upper dentures, one injection channel is
sufficient, fanning out from the funnel tip towards the
palate (Fig 3a). In the case of complete lower dentures,
two channels to the dorsal extremities of the dentures are
to be supplied (Fig 3b). For cast metal frameworks with
individual extension bases, either each base must be
3
2
1