Sebastian Pohl1, Robert Haas2, Stefan Tangl3, Christian Schuh3, Georg Mailath-Pokorny4, Veronika Pohl2. 1. Department of Cranio-, Maxillofacial and Oral Surgery, Medical University of Vienna, Vienna, Austria. Electronic address: sebastian.pohl@meduniwien.ac.at. 2. Academy for Oral Implantology, Vienna, Austria. 3. Karl Donath Laboratory for Hard Tissue and Biomaterial Research, Department of Oral Surgery, Medical University of Vienna, and Austrian Cluster for Tissue Regeneration, Vienna, Austria. 4. Department of Cranio-, Maxillofacial and Oral Surgery, Medical University of Vienna, Vienna, Austria.
Abstract
OBJECTIVE: To document the behavior of autogenous bone block in sinus lift and surgical consequences. STUDY DESIGN: Twelve sinus lifts with autogenous hip bone blocks and simultaneous insertion of two implants in 6 adult female sheep. Polychrome sequential labelling and histologic and histomorphometric evaluation after 6, 16, and 26 weeks. RESULTS: Augmentation material in the apical third was almost fully resorbed after 26 weeks (P = .00388). Percentage of bone tissue increased 0.5-1.0 mm from the implant in crestal region (15.3 ± 7.5% to 16.2 ± 10.1%), whereas it vanished in the apical region from 16 to 26 weeks (4.2 ± 10.4% to 0%) (P = .363). CONCLUSIONS: Autogenous bone block leaves an apical thin but functionally crucial layer covering implants in a form follows function way. Denial of animal-originated biomaterials and prion diseases remain a rarely discussed issue. The use of an implant length-adapted autogenous transplant with osseoinductive advantages should be taken into consideration.
OBJECTIVE: To document the behavior of autogenous bone block in sinus lift and surgical consequences. STUDY DESIGN: Twelve sinus lifts with autogenous hip bone blocks and simultaneous insertion of two implants in 6 adult female sheep. Polychrome sequential labelling and histologic and histomorphometric evaluation after 6, 16, and 26 weeks. RESULTS: Augmentation material in the apical third was almost fully resorbed after 26 weeks (P = .00388). Percentage of bone tissue increased 0.5-1.0 mm from the implant in crestal region (15.3 ± 7.5% to 16.2 ± 10.1%), whereas it vanished in the apical region from 16 to 26 weeks (4.2 ± 10.4% to 0%) (P = .363). CONCLUSIONS: Autogenous bone block leaves an apical thin but functionally crucial layer covering implants in a form follows function way. Denial of animal-originated biomaterials and prion diseases remain a rarely discussed issue. The use of an implant length-adapted autogenous transplant with osseoinductive advantages should be taken into consideration.
Authors: Eudoxie Pepelassi; Despina Perrea; Ismene Dontas; Christian Ulm; Ioannis Vrotsos; Stefan Tangl Journal: Biomed Res Int Date: 2019-12-14 Impact factor: 3.411