2017 Volume 9 Issue 1 Pages 29-34
In this study, nanoporous silica particles (NPS) were synthesized and their controlled drug-release behavior was investigated. The NPS were mixed with glass ionomer cement (GIC), which is a common dental material. Epigallocatechin gallate (EGCG) was charged into the samples as a model drug. Samples were immersed into distilled water; then, the supernatant was analyzed every day using a UV-visible spectrophotometer to observe EGCG-release behavior. GIC containing NPS can release EGCG for more than one week, whereas specimens without NPS released it for only a few days. This suggests that NPS has an excellent ability for sustained drug-release.