Oral hygiene is the way of prevention of cavities (dental caries), gingivitis, periodontists, and other dental disorders. It also helps to prevent bad breath (halitosis). Oral hygiene is necessary for all persons to maintain the health of their teeth and mouth. They are clean and have minimal or no plaque deposits and therefore are more resistant to caries. Healthy gums are pink and firm.

Oral hygiene consists of both personal and professional care. Dental X-rays may be performed as part of routine professional examinations.

Regular tooth cleaning performed by the dentist or dental hygienist is important to remove plaque that may develop even with careful brushing and flossing, especially in areas that are difficult for a patient to reach on his own at home.