Untreated gingivitis can develop into periodontal disease, which can have a serious impact on the patient’s physical and mental health and quality of life. Gingivitis is not easy to detect when it is mild, but needs to be noticed when the following signs and symptoms appear, 1. the typical color change of the gums, i.e. bright red or dark red gums; 2. the gums become soft, with a smooth and shiny surface and a soft, fragile, inelastic texture that may be painful to touch; 3. bleeding gums when brushing or flossing, which is one of the earliest clinical signs of gingival inflammation and can precede the change in gum color; 4. Bad breath; 5. Inflammation or gingival swelling, which can occur in some patients under the long-term stimulation of chronic inflammation, and even cover part of the tooth surface; 6. Gingival atrophy. Long-term recurrent gingivitis can lead to abscess or infection of the gums and jawbone, and even tooth loss. Treatment of gingivitis requires active treatment under the guidance of a dental professional while correcting bad habits. If left untreated, gum disease can spread and affect the entire dental tissue.