How come safety important when operating a dental xray equipment?

X-ray safety: No one, patient, doctor. Or staff should be exposed to unnecessarily ionizing radiation. There is a risk of it causing cancer. See: http://www.Cancer.Org/treatment/understandingyourdiagnosis/examsandtestdescriptions/imagingradiologytests/imaging-radiology-tests-rad-risk.

Safety first !: You should be safe and cautions when doing anything... Driving, cooking, playing sports, etc. Radiographic equipment produce radiation. The small amount that the patient is subject to is necessary for diagnostic purposes. The operator, if exposed, is exposed needlessly and gains no value from the experience. Safer to minimize unnecessary exposure.

Radiation issues!: Dental radiographs especially modern digital check up films are very safe, especially for a patient. And extremely safe when compared to a hospital chest x-ray etc. However, radiation builds with time and the people most susceptible to poor radiograph safety issues are those who take the films. Fortunately, with digital film exposure time a fraction of a few years ago there is now less concern.