Deep periodontal pocket cleaning is a non-surgical periodontal treatment that is specifically used to remove plaque and tartar under the teeth. This type of treatment is usually used in patients with a periodontal pocket depth greater than 5 mm. Under local anesthesia, the dentist will use special instruments and ultrasound equipment to carefully remove dirt and bacteria from under the teeth. This process can not only control periodontal inflammation, but also prevent the progression of periodontal disease and effectively improve oral health. Patients may feel uncomfortable after treatment, but this usually subsides within a few days. Regular deep cleaning can significantly improve periodontal health and extend the life of natural teeth.