Diamond Dental Clinic, located in Oita City, Oita Prefecture, is a medical facility providing dental care. Dr. Yuichiro Shikano, the clinic director, graduated from Kyushu Dental University in 2004 and became director in 2010. The clinic follows the motto of 'preserving as much as possible without unnecessary drilling or extraction,' emphasizing the importance of prevention and aiming to save as many teeth as possible. During treatment, the clinic uses photographs and X-rays to provide visually clear explanations, allowing patients to understand and consent to treatment before it begins. In terms of hygiene, thorough management is implemented with different sterilizers used for different types of instruments, and dedicated sterilizers and oiling equipment are used for devices such as turbines. For parents raising children, the clinic offers staff-supervised childcare and provides an environment where children can watch anime or do coloring activities. The clinic offers English language support and accepts credit cards and electronic payments. Parking and barrier-free facilities are available. Clinic hours are Monday through Wednesday and Friday from 9:00 AM to 6:30 PM, Thursday and Saturday mornings only, and the clinic is closed on Sundays, holidays, and during New Year's and Bon festival periods.