Improvements to light transmittance in light-cured composite resins by the utilisation of low refractive index dimethacrylates

Dental Materials Journal
S Hirabayashi, T Hirasawa

Abstract

In an effort to improve the light transmittance of light-cured composite resins while avoiding degradation of their physical properties, 4 dimethacrylates having low refractive indices and a bulky backbones such as alicyclic or fluorine-substituted bisphenol groups were synthesized. The depths of cure and physical properties of 6 experimental composite resins containing these new monomers were, then, examined and compared to those of 3 control composite resins containing UDMA, BisMEPP, or BisGMA. The depths of cure of the experimental group containing the synthesized monomers were greater than those of the control group with the exception of the composite containing UDMA. The depth of cure increased as the difference between the refractive indices of the matrix monomer and silica filler decreased. The physical properties of 2 composites in the experimental group were comparable to those of the control group. The matrix monomers of these 2 composites were a mixture of 4,8-dimethacryloxymethylene tricyclo [5.2.1.0] decane or 2,2-bis (4-methacryloxyethoxy phenyl) hexafluoropropane and TEGDMA in a molar ratio of 1/1.

Citations

Oct 7, 2008·Dental Materials Journal·Shigeaki Kurata, Noboru Yamazaki
Jun 5, 2012·Dental Materials : Official Publication of the Academy of Dental Materials·S El-SaftyD C Watts
Dec 6, 2016·International Journal of Molecular Sciences·Shuzhen LuoJingwei He
Dec 22, 2007·Journal of Dental Research·A C ShortallP Burtscher
Jun 20, 2017·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Hong-Keun HyunJack L Ferracane
Sep 28, 2004·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Yasuhiro TanimotoKimiya Nemoto
Aug 15, 2019·Microscopy Research and Technique·Elisa do Carmo Agostini BalbinotSergio Vieira

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