X-rays are an essential part of dentistry since many of the problems dentists face is found in areas which are invisible to the naked eye. They show all the areas between the teeth, under fillings and in the bone around the teeth.
There are two kinds of x-rays:
Panoramic– wide x-rays which show overall pictures of the upper and lower jaws.
Periapical – the smaller x-rays which show details of individual teeth.
Are they dangerous?
Dental x-rays are not dangerous as the patient is exposed to a very low dose of radiation for 1 – 1.5 seconds.