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牙根埋伏于牙槽骨中,牙根表面的牙骨质借牙周膜与牙槽骨相连。牙龈、牙槽骨、牙周膜、牙骨质就构成了牙周组织。牙周病指牙周组织的炎症性疾病。而牙石、牙垢就是牙周病发病的重要因素。牙垢是牙面上软而粘的沉积物,呈黄色、灰白色。可在表面、义齿、牙石和牙龈上附着。它是由细菌、脱落的上皮细胞、白细胞和唾液中蛋白质及脂类混合而成的浓缩物。它对牙龈的刺激主要是其中的细菌以及
The root is buried in the alveolar bone and the cementum on the root surface is connected to the alveolar bone by the periodontal ligament. Gums, alveolar bone, periodontal ligament, cementum constitute the periodontal tissue. Periodontal disease refers to the periodontal tissue inflammatory disease. The calculus, tartar is an important factor in the incidence of periodontal disease. Tartar is a soft and sticky deposit on the tooth surface, yellow, off-white. Can be attached to surfaces, dentures, calculus and gums. It is a mixture of bacteria, exfoliated epithelial cells, leukocytes and saliva, and proteins and lipids. It is mainly for the stimulation of gums which bacteria as well