Dentistry had been going on for 9,000 years. It all started with the Indus valley civilization, even from the early Harappan periods (c.3300 B.C.) Their dental tools were made of flints, which are hard, smooth pieces of rocks. Dentistry also known as dental surgery which is the art and science of prevention, diagnosis, and treatment of conditions, diseases, and disorders of the oral cavity. A dentist is a doctor, who practices dentistry after graduating with a degree. Dentists provide basis care on teeth. Dentists can treat many diseases, of the oral cavity and are allowed to prescribe medicines.