What is periodontal disease? Periodontal disease is a disease of the supporting tissues of the teeth, including the gums, bone, periodontal ligaments and alveolar bone, caused by inflammation. What are the causes of periodontal disease? Periodontal disease is mostly caused by local plaque, tartar, tartar, food inclusions, poor restorations, etc. Some of them can be caused by systemic diseases. What are the manifestations of periodontal disease? The main cause of periodontal disease is plaque, which is simply the damage caused by poor oral hygiene. 1. Physical irritation of the gums tends to bleed. 2. The gums in the affected area are congested and edematous. In cases of periodontitis, periodontal pockets can be detected and teeth are loosened to varying degrees. 3, radiographs can be seen in the periodontitis alveolar bone resorption of varying degrees. In gingivitis, there is no alveolar bone resorption.