Gingivitis is a common and frequently occurring disease. If it is not treated in time, it can lead to pulpitis, periodontitis, and even cause dental pain, necrosis, tooth loosening, and loss. When gingivitis occurs, the gingival tissues exhibit vascular congestion, leading to a change in the color of the gums from normal pink to dark red or purplish red. Additionally, symptoms of gingivitis include edema and a change in the appearance of the gums, which become looser and do not adhere tightly to the teeth. There may also be pain, increased fragility of the gums, and spontaneous bleeding, particularly noticeable during brushing and when biting hard objects.