The Department of Endodontics offers lectures and practical trainings on endodontology. Endodontology is the study to treat diseases caused by bacteria entering teeth. A tooth has a cavity called "pulp cavity," which contains nerves and blood vessels. When dental caries develops, bacteria enter this "pulp cavity" and cause a stinging pain peculiar to caries. In such cases, it is necessary to remove nerves infected with bacteria. If left untreated, the bacteria may enter the jaw from the tip of the tooth root, eroding the bone and entering the systemic circulation. Even if one takes antibiotics to kill these bacteria after tooth nerves die, the drug does not reach the tooth because there is no blood flow. So a dentist should use dedicated instruments and drugs to remove the bacteria from the tooth for treatment. In order to perform proper treatment, it is necessary to assess the proper status of bacterial infection. In addition, because the "pulp cavity" form is very complex, advanced techniques are required to remove nerves and bacteria for treatment. In our department, we are engaged in daily clinical practice and education to foster students' scientific eyes to enable accurate diagnosis and acquire advanced technologies as a dentist. Endodontic treatment is an important procedure to remove patient's pain and protect his/her body from bacteria, and we take pride in offering the treatment.