What is the definition of a radiograph?

A radiograph is defined as a picture formed by the passage of x-rays through an object or body. This definition highlights how radiographs are utilized in dental radiography, allowing dentists and radiologists to visualize the internal structures of teeth and surrounding tissues. The x-rays penetrate different materials to varying degrees, resulting in images that display both the hard tissues, such as teeth and bone, and the soft tissues, albeit to a lesser extent.

This process of using x-rays is fundamental to imaging in dentistry, as it provides critical diagnostic information that aids in treatment planning and evaluation of oral health. The other options are not accurate representations of what a radiograph is, emphasizing that a radiograph specifically involves the use of x-rays to create an image.