Core City Dental Clinic, located in Oshima, Koto Ward, Tokyo, is a dental specialty medical facility operated by Tokuchikai Medical Corporation. The Oshima area is a highly convenient transportation hub with the Toei Shinjuku Line running through it, and the clinic functions as a primary dental care provider supporting the oral health of local residents. Clinic hours are from 10:00 AM to 1:30 PM and 3:00 PM to 7:00 PM, offering a schedule that is convenient for working people who have difficulty finding time during the day. The clinic is closed on Mondays and during the year-end/New Year period (December 30-31 and January 1-3), allowing patients to receive care on a wide range of days from Tuesday to Sunday. In dental healthcare, addressing a wide range of needs related to maintaining oral health—from treating cavities and periodontal disease to preventive care and regular checkups—is essential. This clinic is believed to provide careful care tailored to each patient's condition under a community-based treatment system. For those seeking dental care in and around Oshima, Koto Ward, it serves as one of the accessible options available.