Dental X-Rays are pictures of the teeth, bones and tissues around them. It is usually taken to detect cavities, hidden dental structures, tumors and bone disease. It helps to detect the disease at an early stage and allows the dentist to prescribe a treatment plan. There are two types of dental x-rays: intraoral and extraoral. In an Intraoral x-ray the x-ray film is inside the mouth. This type of x-rays are useful in detecting cavities, monitor tooth root and bones surrounding the tooth and overall health monitoring of the teeth and jawbone. In an Extraoral x-ray the x-ray film is outside the mouth. This type of x-rays focuses mainly on the jaw and skull. It is used for detecting impacted teeth, TMJ disorders and monitor jaw development with respect to teeth.