Located just a 3-minute walk from Kichijoji Station, Gotenyama Hana Dental Clinic is based on the philosophy of preventive dentistry learned in Sweden, aiming for treatment and maintenance that allows patients to spend time with their own teeth for as long as possible. The clinic approaches from three areas: precise periodontal treatment, precise endodontic treatment, and thorough preventive support. They specialize in root canal treatment, dental pulp preservation therapy, and periodontal treatment by making full use of microscopes. Emphasizing examination and diagnosis before starting treatment, they perform treatment after thoroughly understanding the oral cavity using a microscope that can magnify affected areas up to 20 times, and they capture not only before and after treatment but also during treatment. In terms of hygiene management, sterilization treatment with an autoclave is performed for each patient, and oral vacuum and electrolytic sterilization systems that keep the air in the clinic clean are introduced. Rubber dams, rubber sheets, are used to prevent oral bacteria from invading the affected area. They focus on preventive care, offering dietary guidance and maternity dental treatment, and adopt a complete appointment system to reduce waiting time. English support is available, and credit cards and electronic payments are accepted.