Methacrylated Calix[6]arenes as Low Shrinking Additives for Dental Restorative Composites
✍ Scribed by Norbert Moszner; Jörg Angermann; Urs Fischer; Alexandros Gianasmidis; Monir Tabatabai; Helmut Ritter; Andreas Utterodt
- Book ID
- 102488431
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 296 KB
- Volume
- 296
- Category
- Article
- ISSN
- 1438-7492
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✦ Synopsis
Abstract
p‐tert‐Butylcalix[6]arene was acylated with different carboxylic acid anhydrides to improve their solubility in dimethacrylate cross‐linkers. An esterification of p‐tert‐butylcalix[6]arene 1 with octanoic anhydride followed by methacrylation of the residual hydroxy groups with methacrylic anhydride resulted mainly in the formation of a pentaoctanoatemonomethacrylate 2a. In the radical polymerization of methyl methacrylate the inhibition effect of residual hydroxy groups in 2a was evaluated. Dimethacrylate containing composites based on a monomer matrix of cross‐linking dimethacrylates and 0–30 wt.% of 2a were prepared. The addition of 2a resulted in a significant decrease of the polymerization shrinkage, whereas the modulus of elasticity of the visible light cured composites was not affected.
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