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Minerva Stomatologica 2019 October;68(5):226-35

DOI: 10.23736/S0026-4970.19.04192-X


lingua: Inglese

Fresh-frozen homologous bone in sinus lifting: histological and radiological analysis

Massimo ALBANESE 1, Francesca ZOTTI 1 , Luca LANARO 1, Diletta TROJAN 2, Adolfo PAOLIN 2, Giulia MONTAGNER 2, Angelica IANNIELLI 3, Luigi F. RODELLA 4, Pier F. NOCINI 1

1 Department of Surgery, Dentistry, Pediatrics and Gynecology, G. B. Rossi Polyclinic, University of Verona, Verona, Italy; 2 Tissue Bank Foundation ONLUS, Treviso, Italy; 3 Private Practitioner, Rovereto, Trento, Italy; 4 Section of Anatomy and Pathophysiology, Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy

BACKGROUND: The aim of this study was to evaluate radiological and histological characteristics of fresh-frozen homologous bone as grafting material for maxillary sinus floor augmentation. Radiological, histological and clinical evaluations were made.
METHODS: Twenty-three patients with a 2 mm to 6 mm alveolar ridge height in the posterior maxilla have been enrolled. Unilateral or bilateral sinus floor augmentations were performed with fresh frozen morcelized homologous bone. Together with implant placement, 7 months after surgery, a bone core was harvested for histological analysis. Radiological measurements were obtained by superimposition of CT scans carried out at the surgery time and six months later. A total of 93 implants were positioned.
RESULTS: A mean (±SD) increase in mineralized tissue height of 10.74±2.82 mm was noticed by comparing the CT scans. Histological analysis revealed the presence of newly formed bone in the grafted sites. The follow up period after the prosthetic load ranged from 8 to 31 months. One implant failure occurred.
CONCLUSIONS: Fresh frozen homologous bone seems to have a good healing pattern and to be a successful and steady grafting material for the treatment of maxillary ridge atrophy. It might be considered a valid alternative to autologous bone in sinus floor augmentation procedures.

KEY WORDS: Bone transplantation; Staining and labeling; Transplantation, homologous; Allografts

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