Oral and dental complications are frequently encountered in diabetic patients. The dentist can assist in early diagnosis by evaluating the oral signs of diabetes during the examination. Oral and dental health is of great importance for a healthy life. It should always be remembered that informing the patient has an important role in protecting and maintaining oral and dental health. The dentist can help in early diagnosis by evaluating the oral signs of diabetes and the side effects it causes during the examination. Both preventive measures and approaches in oral and dental treatments and follow-up processes facilitate the metabolic control of diabetes as well as the protection of oral and dental health.