AI Article Synopsis
- A new liquid-crystalline resin monomer (ALCRM) was developed to reduce polymerization shrinkage in dental resin composites.
- The ALCRM was synthesized through a three-step method and demonstrated favorable liquid crystalline properties with a specific phase transition temperature.
- When compared to traditional resin monomer Bis-GMA, ALCRM achieved a higher degree of conversion and lower volume shrinkage (3.62±0.26%), suggesting its potential for improved dental resin formulations.
Article Abstract
To reduce the polymerization shrinkage of the dental resin composites, a new liquid-crystalline resin monomer was developed. The acrylate liquid crystalline resin monomer (ALCRM), (4-3-(acryloyloxy)-2-hydroxypropoxy) phenyl 4-(3-(acryloyloxy)-2-hydroxypropoxy) benzoate, was synthesized by a three-step method. Using the ALCRM as the main monomer, the degree of conversion (DC) and the volume shrinkage of the resin matrix were compared with the traditional composite resin monomer (Bis-GMA), 2,2-bis[4-(2-hydroxy-3-methacryloyloxy-propoxy)-phenyl] propane. The new monomer showed liquid crystalline characteristics with a mesomorphic phasetransition temperature between 18ºC and 42ºC. When copolymerized with triethylene glycol dimethacrylate (TEGDMA) at a weight ratio of 7:3, the DC of ALCRM was higher and the volume shrinkage was 3.62±0.26%, which was less than that of the Bis-GMA. The ALCRM exhibits promising potential for the development of superior dental resins with low volume shrinkage.
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| http://dx.doi.org/10.4012/dmj.2013-018 | DOI Listing |
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