Calculus is a calcified plaque that is soft and light yellow on the gingiva and hard and dark brown under the gingiva. It is the main cause of gingivitis and periodontitis, and it is recommended to go to the dentist regularly to remove the calculus.
1. Calculus is calcified plaque, or may be calcified plaque, usually not easy to remove, divided into supragingival tartar and subgingival tartar.
2. Supragingival tartar is generally slightly softer in texture, usually found on the lingual surfaces of the mandibular teeth, buccal surfaces of the maxillary teeth, and around the disused teeth, and appears light yellow or white, and may be aggravated in color due to smoking, tea stains, coffee, and so on.
3. Subgingival tartar is found in the gingival sulcus and needs to be blown away from the gums or seen with a probe. It is usually dark brown, hard and sand-like in texture, or flaky.
It is recommended to remove the calculus in time to avoid gingivitis and periodontitis and to clean it regularly.