Dental check-up allows one to maintain a healthy oral hygiene and detects any dental problem at the earliest. Worldwide, dentists recommend routine dental check-ups once every six months. Leaving problems untreated could make them more difficult to treat in the future. One can have the dental check-up at the nearest general dentistry, where the dentist examines teeth, gums and mouth. Dentist will ask for history of dental issues and advice on diet, smoking and alcohol use, and teeth-cleaning habits. Dentist may also recommend for dental treatments such as fillings, teeth cleaning (scale and polish), having a tooth extraction or emergency treatment depending on the individual's oral hygiene. A dental check-up treatment session usually takes about half an hour. First the dentist evaluates the work the hygienist has done, picks at some plaque they may have missed and examines any area of concern. If there are no cavities or other issues it would take just five minutes. The dentist checks the gums for shallow spaces between teeth and gums. . Gum disease becomes apparent when the spaces become deeper. The dentist checks the tongue, throat, face and neck, looking for any signs of swelling as well as detecting any signs of oral cancer. Plaque or tartar is removed using an ultrasonic scaler to painlessly remove larger pieces of tartar, and provide deep cleaning above and below the gum line.