Mouth diseases refer to various conditions that affect the oral cavity, including the gums, teeth, and tongue. Common examples include cavities, gingivitis, and oral thrush. These diseases can result from poor oral hygiene, infections, or underlying health issues, leading to symptoms like pain, swelling, and difficulty eating. Preventing mouth diseases involves regular dental check-ups, proper brushing and flossing, and a balanced diet. Maintaining good oral hygiene helps reduce the risk of conditions such as periodontal disease and oral cancer. Early detection and treatment are essential for effective management and to avoid complications.