You need plenty of calcium for your teeth. It is essential for the teeth as well as your bones. It is better to drink milk, fortified orange juice and to eat yogurt, broccoli, cheese, and other dairy products. You can also take a calcium supplement, taking different doses according to your age and necessity as per prescription. Calcium and Vitamin D are necessary for maintaining the health of gums and teeth. Vitamin B complex is also essential for the protection of gums and teeth from cracking and bleeding. Copper, zinc, iodine, iron and potassium are also required for maintaining healthy dental hygiene.