The latest issue of the EFP’s research summary JCP Digest explores the question of whether the use of a collagen matrix adds dimensional stability when guided bone regeneration is performed before implant placement.
A prospective randomised clinical trial involving 40 patients, summarised as JCP Digest 101, involved the control group of patients being given a particulate synthetic biphasic calcium phosphate (BCP), while the test group received a soft-type block bone in which the same synthetic BCP was embedded in a collagen matrix to improve its dimensional stability.
Researchers in Zurich, Switzerland and Seoul, South Korea found that immediately after wound closure, the test group showed superior dimensions of augmented hard tissue compared to the control group. However, at re-entry six months later, no differences were found between the two groups.
They concluded that neither approach provided a predictable alternative for achieving complete resolution of non-contained peri-implant bone defects.
The research was summarised for JCP Digest by postgraduate students at the EFP-accredited programme in periodontology at the Complutense University of Madrid in Spain.