2010, Number 3
Low shrink posterior resin restorative
Cedillo VJJ
Full text
Language: Spanish
References: 9
Page: 137-142
PDF size: 800.74 Kb.
ABSTRACT
In recent years, major improvements have been made in composite resins, primarily with regard to inorganic fillers, whilst the actual chemical structure of the organic resin matrix has remained unaltered since the work of Bowen in the 1960´s. Virtually all resins employ methacrylates, such as TEGDMA, Bis-GMA or UDMA, which undergo dimensional change during polymerization.Shrinkage from polymerization, which results in stress at the dentin-resin interface, continues to be a drawback of these materials, the only attempt to overcome this being through the employment of a technique that involves adding the resin gradually.
The Filtek™P90 resin matrix is non-methacrylate based, a fact which reduces shrinkage during curing. Based on silorane chemistry and its ring-opening monomers, this particular resin results in a marked reduction in shrinkage. The addition of silorane as the resin matrix is a direct solution for clinics thanks to its lower shrinkage rate. This article presents a clinical case study involving the use of this resin.
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