Yajima Dental Clinic, located in Nishihachiman, Kai City, Yamanashi Prefecture, operates under the philosophy that "prevention is the ultimate dental treatment" and offers services including aesthetic dentistry, pediatric dentistry, dentures, and laser treatments. The clinic features the "Streak" plasma laser treatment device, which enables cavity treatment and periodontal disease treatment without anesthesia using the thermal energy of high-temperature plasma spheres. Additionally, the clinic provides DOCKBEST cement treatment that utilizes the sterilizing effect of a combination of iron and copper ions, allowing for cavity treatment that stops progression with minimal tooth reduction. For periodontal disease treatment, sterilized water treatment using POIC water is implemented with the goal of completing treatment in a short period. As an infection prevention measure, the clinic has introduced the Epios ecosystem and uses Epios water from in-house water supply units throughout all areas. The clinic is equipped with parking, accepts credit cards and electronic payments, and provides services in English, Korean, and other languages.