Objectives To test the null hypothesis of no difference in the implant failure rates,
postoperative infection and marginal bone loss for the insertion of dental implants in fresh
extraction sockets compared to the insertion in healed sites, against the alternative
hypothesis of a difference. Data Main search terms used in combination: dental implant, oral
implant, resh extraction socket, immediate placement, immediate insertion, immediate
implant. Sources An electronic search was undertaken in July/2014, in PubMed, Web of …

The present review aimed to evaluate the difference of dental implant failure rates and
marginal bone loss (MBL) between implants inserted in fresh extraction sockets or healed
sites. Electronic search was undertaken in three databases, plus manual search of journals,
including studies randomized or not. Meta-analyses were performed besides meta-
regressions, in order to verify how the odds ratio (OR) and MBL were associated with follow-
up time. The review included 163 publications. Altogether, there were 17,278 and 38,738 …