Cause: poor oral hygiene
The main cause of this inflammation and accompanying bleeding gums is poor oral hygiene. Bacterial plaque forms on teeth that are poorly brushed or not brushed at all. The groove between the teeth and gums (sulcus) is particularly at risk.
The bacteria in plaque excrete harmful metabolic products called endotoxins that trigger an immune response in the immune system. This immune response in turn triggers inflammation,which - although the bacteria are destroyed -leads to receding gums. If the infection remains untreated, it attacks the periodontium and finally the jawbone.
In addition to poor oral hygiene, the risk factors for the development of bleeding gums, gingivitis and periodontal disease are smoking, diabetes mellitus, hormonal changes during pregnancy or prolonged breathing through the mouth.