Materials and Methods: the study sample consisted of 100 posterior implant supported fixed metal ceramic prosthodontics which had been made for the reviewer’s patients in the fixed prosthodontics section in Damascus University Faculty of Dentistry. Marginal adaptation had been evaluated during the cementation session according to (USPHS) standards, plaque index and gingivitis index had been also evaluated during the cementation session using a plastic periodontal probe that is specially made for dental implants, the values were registered according to Loe index (1967), periodontal probing depth had been evaluated and the values were registered in millimeters, it was done using the periodontal probe in the cementation session. Lastly the prosthesis adaptation and the bone lose were radially evaluated using plastic film holders (Vatic) to make a radiogram using the paralleling technique in the cementation session and all measurements were revaluated after 6 months of the cementation. Data analysis was done with Wilcoxon test and Rank Biserial test for study correlation at significance level of (α=0.05)

Results: all of the prosthodontics that were included in this study have had the evaluation Alfa according to (USPHS) standards. The substantial difference was statistically between the two observation periods included the gingivitis index and the periodontal probing depth index (p < 0.0005). Rank Biserial test has shown that there is a statically substantial positive moderate connection between the periodontal probing depth and bone lose.

Conclusions: according to this study we conclude that the continuance rate of the posterior implant supported fixed metal ceramic prosthodontics is 97%, and the gingivitis index, periodontal probing depth and bone lose were at the clinically accepted values during the evaluation session after 6 months of the cementation.