牙龈萎缩主要因牙周疾病所引起,有这样一些类型:1.炎症性牙龈萎缩。多为牙垢、牙结石长期慢性刺激牙龈,破坏牙周组织,以致牙槽骨吸收,附着在牙槽骨上的牙龈也就向牙根方向萎缩。2.机械损伤性牙龈萎缩。常见的比如嗜嚼槟榔、牙刷不符合标准(太硬、太大)、刷牙方法不正确(如横刷法)、不良修复体等等。这些因素都可以机械摩擦或压迫牙龈,造成牙龈和牙槽骨退缩。3.废用性牙龈萎缩。牙齿 Gingival recession is mainly caused by periodontal disease, there are some types: 1. Inflammatory gingival recession. Mostly tartar, dental calculus long-term chronic gingival irritation, destruction of periodontal tissue, resulting in alveolar bone absorption, attached to the alveolar bone gingiva also to the direction of root atrophy. 2. Mechanical damage gingival recession. Common such as chewing betel nut, toothbrush does not meet the standard (too hard, too large), brushing method is not correct (such as horizontal brush method), poor prosthesis and so on. These factors can be mechanical friction or pressure gums, resulting in gingival and alveolar bone retraction. 3. Disuse gingival recession. tooth