Several theoretical methods have been developed to model and explain the properties of dielectric composites. Effective medium theories such as the Maxwell-Garnett and Bruggeman models approximate the composite as dielectric spheres in a homogeneous medium. The approximations lead to describing the composite's static dielectric response through a mixing formula of the component permittivities. Similar analytical models have been developed to treat general ellipsoidal inclusions. However, experimental comparisons suggest that interfacial effects between the inclusions and matrix materials can cause significant deviations from these model predictions. Researchers have attempted to address this issue by including parameters for capturing the interface structure and polarizability in the effective medium formalism. Quantum mechanical electronic structure methods provide a means of exploring the behavior of nanocomposites without a priori knowledge. However, these methods scale poorly with the number of electrons, meaning they can only be applied to composites where the inclusions are sufficiently small to allow a unit cell on the order of a few hundred atoms. In two earlier publications from our group, Car-Parrinello quantum mechanical molecular dynamics (quantum dynamics) simulations were used to study nanocomposite dielectrics by optimizing electronic and nuclear coordinates under an applied electric field.