Stable mesoporous structures with well-defined surfaceproperties such as MCM-41 and SBA-15 materialscon-sist of a honeycomb-like porous structure of emptychannels that can store relatively large amounts ofbioactive molecules. They are ideal for encapsulation ofpharmaceutical drugs, proteins, and other biogenicmolecules [10]. The use of silica materials for clinicalapplications has considerably expanded in recent years,in particular for orthopedics [11] and drug deliverysystems [10].