Iwashita Dental Clinic, located in Kugahara, Ota Ward, Tokyo, is a dental clinic where the director, who holds qualifications as a periodontal specialist and occlusion specialist, provides treatment. The clinic's philosophy is "dental care that protects teeth," moving beyond conventional symptomatic treatment that restores tissues lost to cavities and periodontal disease to focus on "preventive dentistry" that prevents diseases before they occur. Based on the belief that natural teeth cannot be replaced even by expensive artificial materials, the clinic incorporates the concept of Minimal Intervention (MI) to minimize the amount of tooth reduction, and the medical team of dentists and dental hygienists work together to care for patients. As a result of these efforts, there are increasing cases where children and students who receive maintenance at the clinic are recognized for having no cavities or periodontal disease. Clinic hours are 9:30 AM to 6:00 PM on weekdays (with a lunch break), and until 5:00 PM on Saturdays, with Thursdays, Sundays, and holidays off. The clinic accepts credit cards and electronic payments, providing the convenience of cashless visits.