Should the dentist clean and floss your teeth before an x-ray?

Usually no: By taking radiographs before the cleaning, accumulations of calculus between the teeth can be visualized and help the dentist and/or hygienist do a more thorough job. Bone loss will also be seen on the films, helping diagnose periodontitis.

Treatment Sequence: The first step is a thorough dental examination including X-rays, followed by a professional cleaning.