Bioactive composites containing TEGDMA-functionalized calcium phosphate particles: Degree of conversion, fracture strength and ion release evaluation

Trends in restorative composites research: what is in the future?

“…84 A similar improvement was observed in a subsequent study where an experimental composite containing 40 vol% of barium glass (0.5 µm) and 20 vol% of TEGDMA-functionalized DCPD (19 µm) was compared to a similar formulation containing non-functionalized DCPD. 85 Composites containing CaP particles may undergo more severe degradation after prolonged water immersion than their conventional counterparts, possibly due to the higher water sorption allowed by the transit of fluids along CaP-matrix interfaces. 86 For example, composites containing DCPD particles showed up to 33% reduction in flexural strength after 28 days in water versus a 16% reduction for composites without DCPD.…”

The effect of calcinated hydroxyapatite and magnesium doped hydroxyapatite as fillers on the mechanical properties of a model BisGMA/TEGDMA dental composite initially and after aging

“…One possible approach to reduce the risk of secondary caries development is to add bioactive agents that promote remineralization of tooth structure through calcium and phosphate ion release. In this regard, a wide range of calcium phosphates (CaP) such as hydroxyapatite (HAp), amorphous calcium phosphate (ACP), tetracalcium phosphate (TTCP) and mono-and dicalcium phosphates (MCPM and DCPA) have been studied as fillers in dental composites [7][8][9][10][11][12][13][14][15][16][17][18]. Nanostructured calcium-hydroxyapatite (HAp) presents as a desired component in dental materials due to its biocompatibility, bioactivity and chemical similarity to inorganic component of the teeth [19].…”

Desenvolvimento de partículas de fosfato de cálcio funcionalizadas para aplicação em compósitos resinosos de uso odontológico

“…A síntese de nanopartículas de DCPD funcionalizadas com TEGDMA (dimetacrilato de trietileno glicol) e sua aplicação em materiais à base de dimetacrilatos foi descrita recentemente (Alania, Chiari et al 2016, Rodrigues, Xavier et al 2016. O DCPD é considerado um precursor da hidroxiapatita na mineralização de ossos e dentes (Qiu and Orme 2008).…”

“…Após 28 dias de armazenamento, a resistência à flexão biaxial do compósito experimental contendo 50% de vidro de bário e 10% de DCPD funcionalizado com 22% de TEGDMA apresentou valor estatisticamente semelhante ao controle contendo apenas vidro de bário. A liberação de íons, entretanto, foi inferior àquela apresentada pelo material contendo partículas nãofuncionalizadas (Alania, Chiari et al 2016 (Ferracane, Hopkin et al 1995), resistência flexural (Drummond andMiescke 1991, Arikawa, Kuwahata et al 1995) e tenacidade à fratura (Truong andTyas 1988, Ferracane, Hopkin et al 1995…”