STOCKHOLM, Sweden: Even though no dental filling lasts forever, there are evident differences in the longevity of filling materials. Researchers from the KTH Royal Institute of Technology in Sweden recently developed a new material that offers improvements compared with existing acrylate-based fillers. The researchers regard their work as a guide for the future development of materials for implants.
Adapted from bone fracture adhesive research at KTH, the material, which can be moulded in a clinical setting, surpasses currently used implant materials in key areas of stiffness, strength, biocompatibility and adhesion.
According to co-researcher Prof. Michael Malkoch, from the Department of Fibre and Polymer Technology at KTH, the new material was found to bond to tooth surfaces 160 per cent better than current commercially available polymers do, which means that fewer patients would experience the detachment of dental fillers. It also has the potential for 3-D printing in a clinical setting.
“It provides higher strength, straightforward moldability and non-toxicity. We believe this foretells a new era in hard tissue repair,” said Malkoch.
The research team used light-initiated chemistry to polymerise the monomers. The advantage of this type of reaction is that it generates higher cross-linking density, thus resulting in more rigid and mechanically stronger materials.
“An important feature is the excellent biological profile of the composition and final material. Personally, I would rather have these materials as dental fillers than existing acrylate-based ones, known for their allergenic properties and questionable compositions,” concluded Malkoch.
The study, titled “The dawn of thiol‐yne triazine triones thermosets as a new material platform suited for hard tissue repair”, was published online in Advanced Materials on 2 November 2018 ahead of inclusion in an issue.
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