Sakamoto Orthodontic Clinic, a medical corporation located in Kanda Surugadai, Chiyoda-ku, Tokyo, is a specialized orthodontic facility. For children with anterior crossbite, treatment is recommended from as early as 4-5 years old, while for crowding cases, age 7-8 when the upper and lower front teeth are replaced by permanent teeth is considered ideal. During the growth period, treatment options expand to include jaw growth control, dental arch expansion, and securing space for permanent teeth. Treatment is possible for older patients as long as the teeth and gums are healthy, and some patients are referred by periodontal specialists. The timing for starting orthodontic treatment is also influenced by social factors, and it is considered important to avoid starting just before entrance exams. Regarding patient acquisition, website visits and referrals account for about half each. For orthodontic appliance selection among patients aged 18 and over, external ceramic appliances are the most common at 68%, while those who prefer internal appliances for both upper and lower teeth represent 20%. The clinic offers English support, accepts credit cards and electronic payments, providing a convenient environment for foreign visitors.