A thorough dental cleaning is necessary when there is a significant amount of bacteria and tartar buildup on the surface of the teeth. Once bags form due to gum disease, bacteria and tartar begin to fill them. If not removed, periodontal disease and, eventually, tooth loss can occur. Only your dentist or dental hygienist can confirm this with certainty.
If significant pockets (4 mm or larger) appear during your visit to the dentist, you are at risk of suffering from periodontal disease (or are in the process of developing it). This makes it a candidate for therapy (deep teeth cleaning) and is highly recommended if you want to stop and prevent the progression of the disease. Without treatment, the bacteria that created the pockets in the gums will continue to create plaque, tartar, and even bone loss. Deep dental cleaning can remove plaque and tartar buildup on your teeth, reduce gum inflammation, and improve gum health.
Deep dental cleaning, sometimes called gum therapy, is a treatment that cleans the area between the gums and the teeth down to the roots. If your dentist and hygienist determine that your teeth and gums are healthy, they'll likely recommend regular cleaning, no matter how long it's been since you last cleaned. There is a misconception that deep dental cleaning is necessary when you need to ensure that your teeth are “in good shape and clean”.