  In this work, we consider a theoretical model that presents violation of the
Lorentz symmetry in the approach of Quantum Field Theory. The theoretical model
adopted consists of a real massive scalar quantum field confined in the region
between two large parallel plates. The Lorentz symmetry violation is introduced
by CPT-even, aether-like approach, considering a direct coupling between the
derivative of the the scalar field with two orthogonal constant vectors. The
main objective of this paper is to analyze the modification on the Casimir
energy and pressure caused by the anisotropy of the space-time as consequence
of these couplings. The confinement of the scalar quantum field between the
plates is implemented by the imposition boundaries conditions on them.
