Purpose: In case of atrophic posterior mandibles, the inlay bone graft technique showed remarkable results in terms of vertical bone augmentation and the use of an allograft block seems to be able to accelerate graft integration and therefore implant rehabilitation. The aim of the present study was a clinical and histological evaluation of allograft bone blocks in the inlay augmentation procedure. Methods and materials: Four consecutive patients showing atrophic posterior mandibles were referred to the Periodontology & Implantology Department of the Dental School of University of Bologna (Bologna, Italy), for oral rehabilitation through implant placement. A vertical bone incrementation was performed through an inlay technique with allograft block covered by allograft dermis membrane. After 2–3 months of healing, four bone cores from the augmented sites were retrieved during implant site preparation. Results: No postoperative complications occurred. The histological analysis showed presence of compact bone revealing areas of demarcation between grafted bone, newly formed bone and regenerated areas. Conclusion: When treating severe atrophy of the posterior mandible, the use of cancellous bone can be considered a suitable material for bone regeneration in inlay grafting procedures in atrophic posterior mandibles. According to the preliminary results, this material represent a good clinical alternative to autologous and inorganic bovine bone.

Inlay and allograft block in atrophied posterior mandible: Case series

CHECCHI, Vittorio;MAZZONI, Annalisa;
2014

Abstract

Purpose: In case of atrophic posterior mandibles, the inlay bone graft technique showed remarkable results in terms of vertical bone augmentation and the use of an allograft block seems to be able to accelerate graft integration and therefore implant rehabilitation. The aim of the present study was a clinical and histological evaluation of allograft bone blocks in the inlay augmentation procedure. Methods and materials: Four consecutive patients showing atrophic posterior mandibles were referred to the Periodontology & Implantology Department of the Dental School of University of Bologna (Bologna, Italy), for oral rehabilitation through implant placement. A vertical bone incrementation was performed through an inlay technique with allograft block covered by allograft dermis membrane. After 2–3 months of healing, four bone cores from the augmented sites were retrieved during implant site preparation. Results: No postoperative complications occurred. The histological analysis showed presence of compact bone revealing areas of demarcation between grafted bone, newly formed bone and regenerated areas. Conclusion: When treating severe atrophy of the posterior mandible, the use of cancellous bone can be considered a suitable material for bone regeneration in inlay grafting procedures in atrophic posterior mandibles. According to the preliminary results, this material represent a good clinical alternative to autologous and inorganic bovine bone.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11368/2814125
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