It is recommended to visit a dentist for checkup and cleaning every six months. Regular dental examinations and adapted oral hygiene visits contribute to oral health. Dental cares by brushing the teeth twice a day with fluoride toothpaste, is associated with the replacement of the toothbrush every three or four months combined with the ingestion of a balanced diet. People who regularly practice good oral hygiene at home with proper brushing and flossing techniques typically do not experience discomfort during a cleaning. However, those who have neglected their oral hygiene habits may experience some discomfort or sensitivity during a dental cleaning. If it has been a long time between cleanings there is likely a good amount of calculus (tartar) buildup on your teeth, which has likely led to inflammation or even gum disease. Don’t feel swindled if the dentist wants you to come back for 2 or more cleanings, if there has been tartar on your teeth for many years it can be very hard to remove and sometimes it takes longer than 1 hour to get it all.