Teeth whitening is a cosmetic dental procedure to lighten teeth or remove stains. Teeth whitening procedures are usually carried out by dentists and can be carried out in several different ways. It includes a special tooth tray and teeth whitening gel prescribed by the dentist. It is usually used for a few hours before going to bed at night, or for several hours a day. Results are obtained with regular use for several weeks. It is a procedure performed in the dentist’s clinic. A special gel or other whitening agents are applied to the teeth and interacted with a light or laser. Dental calculus cleaning is a procedure performed at your dentist’s clinic. Dental calculus and plaque are cleaned over the teeth, making the teeth look whiter.