Sekiguchi Dental Clinic is a dental clinic located in Katsushika, Edogawa Ward, Tokyo, which opened in 1990. In addition to treating cavities and periodontal disease, the clinic offers a wide range of services including wisdom tooth extraction and implant surgery. Dr. Koichi Sekiguchi, the clinic director who graduated from Nihon University Matsudo Dental School, opened the clinic after working for seven and a half years at the New Aoyama Twin Building Tanaka Dental Clinic. With a policy that prioritizes counseling, the clinic carefully understands patients' concerns and proposes treatment methods that prioritize patients' wishes. The clinic places great emphasis on painless treatment, using surface anesthesia along with ultra-fine needle electric anesthesia devices, and has also introduced laser treatment devices and electric scalpels to reduce stress during treatment. Hygiene management is also thorough, with used instruments being sterilized in autoclaves, and a European-standard water purification system has been introduced to ensure water hygiene. In addition to a bright and clean waiting room, the clinic is equipped with treatment rooms that respect privacy, separated by partitions for each dental unit. The clinic supports English language services, accepts credit cards and electronic payments, and has a parking lot.