Located in Kudanminami, Chiyoda-ku, Tokyo, approximately an 8-minute walk from Kudanshita Station, E-Line Orthodontics is a specialized orthodontic clinic with around 40 years of history focused on lingual (behind-the-teeth) braces. Because the appliances are bonded to the inner surface of the teeth, they are hardly noticeable from the outside, offering an ideal option for patients who want to straighten their teeth while prioritizing aesthetics. A key feature of the clinic is its proprietary "Lingual Bracket Orthodontic Appliance (ALIAS)," developed through decades of clinical experience. The design reduces friction between the wire and the bracket, enabling tooth movement with lighter forces, which is reported to help minimize discomfort during treatment. The clinic also houses an in-house dental laboratory, fabricating all orthodontic appliances on-site to ensure precise coordination between clinicians and technicians. For diagnosis, 3D digital tools such as low-dose dental CT are used to create fully customized treatment plans tailored to each patient's jaw and dental condition. A collaborative team of dentists, dental technicians, dental hygienists, and treatment coordinators works together to support every patient throughout their care.