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19. September 2013

Good long-term results for implants using GBR with membranes

Researchers of the University of Zurich has presented new results from a long-term study over 12 to 14 years. The study shows that implants placed simultaneously with guided bone regeneration (GBR) have a high survival rate not significantly different to implants placed in ample vital bone.

The authors of the study conclude that GBR with a membrane during implantation ensures reliable and predictable results. Therewith for the first time, long-term results over 12 to 14 years scientifically confirm the success of this therapy.

The study in brief
The original study population consisted of 72 patients with 265 implant sites. The patients in the two test groups received a GBR treatment with Geistlich Bio-Oss® and either a Geistlich Bio-Gide® membrane (n=112) or a Gore-Tex® membrane (n=41) at the time of implant placement. The cases in which no GBR was necessary during implantation served as control group (n = 112). The clinical and radiological tests were carried out 12 to 14 years after the implantation. The results from 58 patients were incorporated into this study. The cumulative implant survival rate at follow-up was 93.2%, without any significant differences between the three groups.

The study was published here:
Clin Oral Implants Res. 2012 Jun 15. doi: 10.1111/j.1600-0501.2012.02522.x. [Epub ahead of print] Long-term outcome of implants placed with guided bone regeneration (GBR) using resorbable and non-resorbable membranes after 12-14 years. Jung RE, Fenner N, Hämmerle CH, Zitzmann NU.

Read the abstract: