Abstract: Objective To systematically evaluate the effect of excess cement on the risk of peri-implant diseases and study how to minimize the excess cement, so as to provide a basis for the prevention and decision making of peri-implant diseases. Methods PubMed, Embase, Cochrane library, CNKI, WanFang, VIP, SinoMed databases were searched for studies on the risk of excess cement and peri-implant diseases. Results The results yielded 101 potentially relevant titles, among which only 13 studies were included, including 1,125 patients. Studies showed that cement excess might be a risk factor of peri-implant diseases, and it should be avoided as much as possible in clinic. Conclusion Excess cement may be a risk indicator of peri-implant diseases. Using cement-retained crowns of implant restoration requires accurate diagnostic method for detection of excess cement in time, and combining it with careful cement technology can minimize excess cement to reduce the risk of peri-implant diseases.

Key words: peri-implant disease, Dental Cements, cement-retained