________ are generally identified by their alphabetic letter and are organic substances that are essential for metabolism, growth, and development of the body. They are NOT sources of energy, but they are required for health

Failing to record the apical region of the teeth on a periapical radiograph most likely results from an error made in which of the following steps?

A) Placement of the image receptor B) Horizontal angulation C) Vertical angulation D) Centering the x-ray beam

Define the medical terms listed below: cubonavicular—