Bone regeneration of horizontal defects in the posterior mandible: 1-year prospective study results

INTRODUCTION

Alveolar ridge defects caused by tooth extraction, trauma or periodontal diseases often require surgical procedures to allow implant-supported prosthodontic rehabilitation. Guided bone regeneration (GBR) utilizing bone graft substitutes and collagen membranes is considered a preferred treatment option able to provide bone of sufficient volume and quality for implant placement (1,2). To ensure long-term success, however, the augmented bone should also promote stable and healthy response of the peri-implant tissues.

The aim of this multicenter prospective study was to evaluate GBR in severe horizontal bone defects using bovine bone graft material (creos™ xenogain, Nobel Biocare) and collagen membrane (creos™ xenoprotect, Nobel Biocare) prior to implant placement.

Highlights

• Significant bone width gain 8 months post GBR surgery: 4.0 ±1.5 mm at 1 mm and 4.8 ± 1.7 mm (n=45) at 3 mm from the top of the crest. 
• Successful placement of 91 implants in 43 patients. 
• High cumulative implant survival and success rates of 100% and 96.3%, respectively, from definitive prosthesis placement to 1-year follow-up.

CITATION

Presented at 30th Annual Scientific Meeting of the European Association for Osseointegration (EAO Digital Days), 12–14 October 2021.

Aleksic Z, Milinkovic I, Lazic Z, Magic M, Wessing B, Schleich R, Sader R, Lorenz J, Ghanaati S, Merli M, Mariotti G, Jaciubek M, Bressan E. (December 2021) EAO-393/PO-SU-014 | Bone regeneration of horizontal defects in the posterior mandible: 1-year prospective study results. In Special Issue: Digital Days 2021 by the European Association for Osseointegration 12-14 October 2021, Clin Oral Impl Res; 32(S22):147-148.  https://doi.org/10.1111/clr.69_13856

References

1.    de Azambuja Carvalho PH et al. Oral Maxillofac Surg. 2019 Sep;23(3):271-279.
2.    Urban IA et al. Clin Oral Implants Res. 2019 Jun;30(6):487-497.