Nagashima Dental & Orthodontics, located in Maebashi City, Gunma Prefecture, has been providing comprehensive dental care since its establishment in 1979, with a focus on orthodontic treatment. The clinic is designated as a specialized medical institution for developmentally-assisted healthcare, performing highly specialized orthodontic treatments for conditions such as cleft lip and palate, Prader-Willi syndrome, jaw deformities, Down syndrome, and osteogenesis imperfecta. Treatment departments include dental implants, cavity and periodontal disease treatment, pediatric dentistry, ceramic treatment, and treatment for snoring, teeth grinding, and sleep apnea syndrome. Many staff members hold teeth alignment coordinator qualifications from the Japanese Society of Adult Orthodontics. In preventive care, the clinic offers cavity and periodontal disease prevention based on scientific data including saliva testing, as well as preventive support for misaligned teeth and sleep apnea syndrome through guidance on proper oral development from childhood. Comprehensive infection control measures are implemented, including cleaning, disinfection, and sterilization of instruments using German-made high-performance sterilizers, use of disposable instruments, and alcohol disinfection throughout the clinic. Advanced equipment including dental CT, dental microscopes, and 3D optical scanners has been introduced. Collaboration with local medical institutions is also strengthened, working with internal medicine, otolaryngology, dermatology, orthopedics, obstetrics and gynecology, and pediatrics to ensure that patients with chronic conditions, elderly individuals, and pregnant women can receive care with peace of mind. The clinic also offers convenient features including English-speaking services, credit card and electronic payment acceptance, parking availability, and barrier-free accessibility.