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This topic has 2 replies, 3 voices, and was last updated 22/02/2011 at 1:37 pm by tirath.

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16/02/2011 at 5:32 pm #11744

Anonymous
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Problems associated with fabrication of custom-cast posts with a plastic rod and autopolymerizing resin include voids in the pattern, locking of the pattern into undercuts, and resin fracture during removal of the pattern. This article describes a system for fabricating custom-cast posts with a thermoplastic resin to address these problems. The system consists of a plastic support rod and a thermoplastic resin. A custom post pattern can be quickly and easily produced by trimming the plastic rod, heating the resin either over a direct flame or in a low-temperature glue gun and seating it into a lubricated prepared canal. The resin flows well and thereby reduces voids. The resin is elastic enough to be removed from small undercuts without locking into the canal or fracturing.



20/02/2011 at 2:13 pm #16865

vedrahool123
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Another approach for achieving the advantages of custom made post and core is to Reline the fibre post with resin and luting it with a dual cure cement..



22/02/2011 at 1:37 pm #16866

tirath
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what are the failures?
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