Not everyone needs subgingival scaling after cleaning their teeth. When visiting a doctor, the doctor will check the depth of the periodontal pocket of each tooth with a professional probe and record it on the periodontal probe table. If the depth exceeds 3mm, it belongs to periodontitis. At this time, subgingival calculus and dental plaque are in the deep part of the gum, which can not be cleaned by ordinary tooth washing. At this time, subgingival scaling is needed.

Subgingival scaling is a relatively fine subgingival scaling device, which is used to scrape dental plaque and calculus on the surface of root in periodontal pocket. Subgingival stones are hard and widely distributed, and they are operated in periodontal pockets. The process is invisible and depends entirely on the doctor's touch, so the technical requirements for doctors are very high.

When curettage, you must find an experienced doctor, skilled. Like a periodontist in synthetic dentistry, before the operation, you will find out the shape and depth of periodontal pocket, the number and location of subgingival stones, and find a safe fulcrum with hand-held instruments. The scope of curettage is very small to avoid slippage or injury to soft tissue. Each diagnosis and curettage should overlap with the previous one to avoid missing stones, which can greatly reduce the time of diagnosis and curettage while ensuring the therapeutic effect.