Yokoyama Orthodontics, located on the 7th floor of the Alpha Asahi Building in the Asahi area of Kita-ku, Sapporo, is a dental clinic specializing in orthodontic treatment. The director has over a decade of experience in education, clinical practice, and research at university hospitals, and since opening in June 2000, has been dedicated to providing high-quality, patient-centered care. The clinic serves patients ranging from children to adults in their 70s, offering orthodontic treatments aimed at improving tooth alignment and bite. A notable feature is the wide selection of treatment devices, including various multi-bracket appliances made of metal, plastic, and ceramic, as well as lingual bracket appliances attached to the back of the teeth for a more discreet appearance. They also offer clear, removable aligner-type orthodontic appliances (Invisalign), with treatment plans developed using proprietary 3D simulation technology. The clinic provides English language services and accepts credit cards and electronic payments, offering diverse payment options. On-site parking is available for those arriving by car. The clinic is closed on Thursdays and public holidays.