Dentists detect cavities during oral exams, which consist of a visual and physical inspection of the mouth. During the exam, the dentist will check the teeth and gums for any signs of decay, such as discoloration, soft spots, or holes in the enamel. The dentist may also use an instrument to probe the teeth and check for cavities.
In addition to visual examinations, dentists may also use a laser to detect cavities. Once a cavity has been diagnosed, the dentist can recommend treatment options.