Yamashita Dental Clinic is a dental practice located in the eastern part of Nagaoka City, Niigata Prefecture, in a naturally rich area near Yūgyūzan. A major feature of the clinic is that the director holds certification as a periodontal specialist from the Japanese Society of Periodontology, offering a wide range of treatments from general cavity and periodontal care to implants, cosmetic dentistry, and whitening. The clinic actively incorporates state-of-the-art equipment including dental CT, informed consent computer software, and laser therapy devices. The dental CT enables three-dimensional precise visualization of the oral cavity, making safe and accurate implant surgery possible. In terms of treatment policy, the clinic thoroughly practices informed consent, carefully listening to each patient's symptoms and fully explaining treatment content before obtaining agreement to begin treatment. For periodontal disease, the clinic is well-regarded for providing solid support for post-treatment health maintenance through regular maintenance and oral care advice. Facility-wise, the clinic has a dedicated parking lot with 10 spaces and features barrier-free design, making it accessible for wheelchair and stroller users. Electronic payment is also accepted, demonstrating attention to convenience. Saturday appointments are available, creating an accessible environment for those who have difficulty visiting on weekdays.