The Temporal InertiaI (TI) field model of gravity and inertia is a conjecture of this author. The TI field acts as an intermediary in the transmission of the gravitational force from one object to another. An object comprises one or more matter particles. Particles of the TI field are directly subject to gravity but objects are not. An object is accelerated toward a gravitational body (GB) at the same rate as particles of the TI field. Thus all objects, regardless of their constitution, are accelerated at the same rate toward a GB. As an aggregate of particles of the TI field descends under gravity toward a GB the particles are subject to gravitational compression as the volume they occupy decreases. Absent a counteracting agency the particle density of the TI field would increase. Nature’s management of the particle density of the TI field during gravitational compression underlies the creation of dark matter. The particle density of the TI field also plays a crucial role in the inertia of an object. The inertia of an object is proportional to the particle density of the TI field. As the inertia of an object is constant (relativistic effects notwithstanding) the particle density of the TI field must itself be constant throughout the Universe. To sustain a constant particle density during gravitational compression particles of the TI field must transform into a form with different properties. The properties of the newly created particle that are required to support the proposed model for the creation of dark matter are detailed in this study.