Dental cleaning is reliable. 1. Teeth cleaning is also known as teeth cleaning, is beneficial to oral health. Because normal brushing will not be able to thoroughly clean the place, these food debris accumulated in the neck of the teeth, will form soft tartar, soft tartar calcification and deposition will form tartar, tartar surface will usually have bacteria attached, thus stimulating periodontal tissue. 2. Long-term tartar stimulation will cause gum inflammation, alveolar bone resorption, and in severe cases, the gums will recede with the resorption of the alveolar bone, so that the neck of the teeth will be exposed, and even the roots of the teeth, the formation of periodontal disease. So tartar is very bad. And once tartar is formed, it can’t be removed by brushing alone, but only by ultrasonic or manual scaling to remove the tartar. 3. Ultrasonic cleaning, is the use of ultrasonic cleaning machine, through the ultrasonic vibration, the calculus will be removed cleanly, and then also need to rinse the gums, medicine, so that you can eliminate gum inflammation, to maintain oral health. It is generally recommended to have a cleaning once every six months or a year.