Gingival recession is not true periodontitis. Periodontitis is an inflammation of the periodontal supporting tissues, primarily clinically manifested as gingivitis or periodontitis. Gingivitis is an early stage of periodontitis, characterized by bleeding during brushing or eating, disappearance of the normal shape or state of the gums, and symptoms such as red and swollen gums, pus discharge, and disappearance of the papillae. The presence of dental calculus, soft plaque, and bacterial plaque around the teeth are stimulants, suggesting these are indicators of periodontitis. Gingival recession may be a temporary phenomenon due to reasons such as occlusion. Severe gingival recession can cause exposure of the tooth root surfaces, leading to sensitivity of the roots. If periodontitis has already caused the teeth to become loose, it is necessary to promptly proceed with guided bone regeneration.