The importance of systemic management to prevent accidents is increasing in dentistry because co-morbid illnesses in an aging society and invasive surgical procedures are increasing. In this prefecture, a new medical system called the remote online hemodynamic monitoring system (ROHMs) was started in 2001. Eight private dental offices participated in this trial. When dental practitioners feel the risk of a dental procedure, they can contact via ROHMs to this hospital. Then, the hemodynamic data (blood pressure, heart rate, ECG, SpO 2, and RPP) of the patient in the clinic can be transmitted here via the internet, and the images and the voice can be transmitted as well. The availability of this system was assessed in 66 patients (98 cases). The most frequent complications were hypertension, heart disease, and diabetes mellitus. Systemic management included monitoring during the dental procedure (71.4%), checking vital signs after an interview (15.3%), and monitoring under sedation (13.3%). There were 35.7% of all cases where an unscheduled procedure was necessary for the systemic management. Based on a questionnaire, the majority of the patients felt relieved and safe. This system creates a situation where a specialist is almost present during the procedure. This system will provide significant assistance for future medical cooperation for risk management.