Abstract
Keeping oral environment clean and controlling occlusal force are necessary to lengthen the life of implant restorations. To enable this，having regular maintenance of them is essential. We have developed and operated a system which balance technologies with human factors. By utilizing it，we have achieved high patients recall rates and it has brought good influence on keeping good conditions of implant restorations and oral environments of patients. Hence，maintenance systems that balance technologies with human factors are considered to be effective.
