Regular dental cleanings and exams are the cornerstones of preventive oral health care. They can help to detect and prevent oral health problems before they start or become more severe. During a cleaning, a dentist or hygienist will remove plaque and tartar, which are hardened deposits of bacteria that cause gum disease, cavities, and other serious issues. Additionally, during a comprehensive exam, your dentist will be on the lookout for any signs of decay or other irregularities as well as check for signs of oral cancer. In general, it is best to have a dental checkup every six months in order to keep your teeth healthy and strong and avoid costly treatments down the line.