Refractory investment for porcelains with medium thermal expansion. Polyvest Refractory the material is formulated with a coefficient of thermal expansion that is very close to today's newer porcelains. With its controlled expansion, Polyvest enables full contour build-ups and produces precise ceramic restorations. Polyvest offers users many advantages such as:
Sufficient working time for pouring models
Fine-grained material with flowability for high-precision reproduction
Highest resistance to breakage and abrasion
Controlled expansion suitable for most porcelains
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