Motivation and oral hygiene instructions are important for preventing dental diseases. Bacterial plaque contributes to dental caries and periodontal diseases, so mechanical removal of plaque through brushing and flossing is necessary. Motivating patients involves educating them about plaque, diseases, and the importance of oral hygiene through demonstrations and ensuring their understanding. Proper oral hygiene includes brushing twice daily, flossing, a healthy diet, using mouthwashes, and regular dental checkups to remove plaque and prevent common dental problems.