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Castdon Resin

Auto-polymerising, cadmium-free PMMA pouring resin with barbiturate hardener system for the production of total and partial dentures, clinically proven for many years.

 

Characteristics

  • low shrinkage
  • excellent flow characteristics
  • break-resistant
  • colour stable
  • minimum content of residual monomer
  • also suitable for the pressing procedure, relining and repairs
  • successfully tested for biocompatibility

Areas of indication

  • total prosthodontics
  • partial prosthodontics
  • implant prosthodontics
  • immediate prosthodontics
  • relinings
  • repairing
  • completion



Components

Polymer

  • polymethyl methacrylate copolymer
  • barbiturate acid derivates
  • colour pigments

Monomer

  • methyl methacrylate
  • quaternary sal ammoniac
  • stabilisers
  • catalyst
  • vulcaniser



Tabular basic data

  • max. dorsal height of model 20 mm
  • amount of material Siliform 2 x 150 ml
  • curing Siliform 30 min.
  • curing Gelon 45 min.
  • amount of material required for each denture: 17 g Polymer, 11 ml Monomer
  • polymerisation time: resin 25 min., polymerisation temperature 45 °C, pressure range 2.5-5.0 bar
  • approx. 30 minutes pure working time



  • manufacture wax model as usual
  • functional edges must be free of wax
  • adjust model in flask
  • fix model onto bottom plate by use of wax
  • close flask with brackets
  • check sealing for correct fit
  • shake Siliform before use
  • take 150 ml of each component and mix homogenously by use of spatula
  • fill flask from top in a thin stream
 
  • cure silicone under the same pressure as will be done later with the resin (e. g. Polymax)
  • curing approx. 30 min.
  • remove bottom plate and deflask the model
 
  •  pierce two pouring canals into the dorsal area of the jaw ridge
  • one additional canal has to be pierced into the upper jaw, in central position
  • remove wax from teeth using the flask bottom plate
  • abrade teeth and apply retention
  • set teeth back into the duplication form
  • no gluing of teeth is necessary due to the moist surface of the silicone
  • application of Castdon Bonding between tooth and basis strengthens connection 
  • put model into warm water, afterwards dry the surface
  • insulate by use of Isolat film
  • only insulate with one layer!
 
  • set model back into duplication form
  • close flask with bottom plate
  • fill dosing aids (the same filling height guarantees an optimal mixing ratio, 17 g powder/11 ml liquid for one denture)
  • mix Castdon homogenously in a mixing beaker
  • pour it into the flask in a thin stream through only one canal
  • cure inside a polymerisation unit (e. g. Polymax 1) for about 25 min. at a temperature of 45 °C
  • fill with water up to the edge of the flask
  • the resin-filled funnels should not be set under water
  • remove the bottom plate after polymerisation
  • deflask the model
 
  • denture can be removed easily from the model
  • further treatments are reduced to: removing of spill-overs, adding of the finishing touches by use of sandpaper
 
  • ... and polishing – completed!