IngentaConnect A prospective randomized study comparing two techniques of bone a...

Authors: Antoun H.¹; Sitbon J.M.¹; Martinez H.¹; Missika P.¹

Source: Clinical Oral Implants Research, Volume 12, Number 6, 1 December 2001 , pp. 632-639(8)

Abstract:

Two techniques of ridge augmentation using onlay bone graft alone or associated with a non-resorbable membrane have been previously described. This prospective, randomized study compared these two techniques at 6 months, in terms of bone gain, resorption and quality obtained at edentulous sites. Osseous measurements were taken using stents, callipers and CT-scans. Membrane exposure occurred at one site, 4 weeks after placement. Endosseous implants were successfully placed at all grafted sites. The mean graft thickness for all subjects was 4.7 mm (range: 2.3–6.2 mm). Overall mean resorption was 1.5 mm (range: 0–4.6 mm) whereas overall mean width gain was 3.2 mm (range: 0.8–6.2 mm). Six months following surgery, the membrane group experienced significantly less bone resorption than the graft alone group (P<0.01). Width augmentation did not differ significantly between the two groups. In conclusion, combining a membrane with an onlay graft demonstrates less bone resorption with a minimal risk of complications. Longer follow-up is needed to confirm the benefits of using a non-resorbable membrane.

Keywords: endosseous implant; bone reconstruction; autogenous graft; non-resorbable membrane

Document Type: Original article

Affiliations: 1: Department of Oral Surgery and Oral Implantology, School of Dentistry, University Paris 7, Denis Diderot, Paris, France

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A prospective randomized study comparing two techniques of bone augmentation: onlay graft alone or associated with a membrane