What are dental X-rays and why are they needed?

X-rays are a form of energy that can pass through a solid object or be absorbed by a solid object. X-rays are absorbed by dense objects, such as teeth and bones, and appear as light-colored areas in X-rays. X-rays pass through less dense objects such as the gums and cheeks and appear as dark areas on X-rays.
X-rays can help find problems that can not be seen with oral exams. Identifying and resolving problems early in their development may save you money, avoid discomfort (if you handle it later), and may even save your life.