Bleeding gums from eating apples are mostly caused by chronic gingivitis and periodontitis. Healthy gums even if a little hard brushing or gently probe the gingival sulcus do not cause bleeding, while in the early stages of gingivitis, gently probe the gingival sulcus can bleed. Clinical probing of the gums with or without bleeding is of great significance in the diagnosis of chronic gingivitis. 1. Chronic gingivitis is an extremely common gingival disease with a high prevalence especially in adolescents. Bleeding gums are often the main reason for patients with chronic gingivitis to visit the clinic, most often occurring when brushing or biting on hard objects, and there is usually no spontaneous bleeding. Color changes are also an important clinical sign of chronic gingivitis. Normal gingiva is pink, when chronic gingivitis free gingiva and gingival papilla is bright red or dark red, severe gingivitis congestion can spread to the attached gingiva, the formation of pseudo periodontal pockets. 2. Periodontitis: Chronic gingivitis is not treated in time or the inflammation is not well controlled will lead to further expansion of the inflammation to the depths to form periodontitis. The early clinical manifestations of periodontitis are inflammation and bleeding of the gums. Later, it may lead to loose teeth. It is recommended that when you find bleeding gums may also be caused by other reasons, you should consult a dentist in a timely manner, according to the examination and diagnosis of a professional doctor to take the correct treatment measures, to avoid delaying the condition.