Jens Hartlev1,2, Sven Erik Nørholt1,2, Rubens Spin-Neto3, David Kraft4, Søren Schou5, Flemming Isidor6. 1. Department of Dentistry and Oral Health, Section for Oral Surgery and Oral Pathology, Aarhus University, Aarhus C, Denmark. 2. Department of Oral and Maxillofacial Surgery, Aarhus University Hospital, Aarhus N, Denmark. 3. Department of Dentistry and Oral Health, Section for Oral Radiology, Aarhus University, Aarhus C, Denmark. 4. Department of Dentistry and Oral Health, Section of Orthodontics, Aarhus University, Aarhus C, Denmark. 5. Faculty of Health Sciences, Department of Periodontology, School of Dentistry, University of Copenhagen, Copenhagen N, Denmark. 6. Department of Dentistry and Oral Health, Section for Prosthetic Dentistry, Aarhus University, Aarhus C, Denmark.
Abstract
OBJECTIVES: This study aimed to evaluate histologic and histomorphometric bone characteristics with a focus on vitality after lateral alveolar ridge augmentation using an autogenous bone graft as a block covered by either a platelet-rich fibrin (PRF) membrane (test group) or a standard procedure involving coverage of the bone block with a deproteinized bovine bone mineral and a resorbable collagen membrane (control group). MATERIAL AND METHODS:A total of 27 (test = 14, control = 13) partially edentulous patients with indication for bone block augmentation before implant installation were included. For analyses, a biopsy of augmented bone was retrieved six months after bone grafting. RESULTS: Histologic evaluation of augmented bone revealed a predominance of non-vital bone toward the periosteum and few localized areas of vital bone in the center of the graft in both groups. In contrast, augmented bone toward the native bone demonstrated extensive bone remodeling in both groups. Histomorphometric analyses demonstrated a mean of 14% vital bone, 80% non-vital bone, 5% soft tissue, and 1% blood vessels in the test group. In the control group, the corresponding shares were 14% vital bone, 63% non-vital bone, 22% soft tissue, and 1% blood vessels. We observed no significant differences between the groups (p > .05). CONCLUSION: In conclusion, a comparable low bone vitality of augmented bone was observed in the PRF and in the control group. Consequently, the present study could not verify the potential beneficial effect of a PRF membrane on bone vitality of an autogenous bone graft used as a block.
RCT Entities:
OBJECTIVES: This study aimed to evaluate histologic and histomorphometric bone characteristics with a focus on vitality after lateral alveolar ridge augmentation using an autogenous bone graft as a block covered by either a platelet-rich fibrin (PRF) membrane (test group) or a standard procedure involving coverage of the bone block with a deproteinized bovine bone mineral and a resorbable collagen membrane (control group). MATERIAL AND METHODS: A total of 27 (test = 14, control = 13) partially edentulous patients with indication for bone block augmentation before implant installation were included. For analyses, a biopsy of augmented bone was retrieved six months after bone grafting. RESULTS: Histologic evaluation of augmented bone revealed a predominance of non-vital bone toward the periosteum and few localized areas of vital bone in the center of the graft in both groups. In contrast, augmented bone toward the native bone demonstrated extensive bone remodeling in both groups. Histomorphometric analyses demonstrated a mean of 14% vital bone, 80% non-vital bone, 5% soft tissue, and 1% blood vessels in the test group. In the control group, the corresponding shares were 14% vital bone, 63% non-vital bone, 22% soft tissue, and 1% blood vessels. We observed no significant differences between the groups (p > .05). CONCLUSION: In conclusion, a comparable low bone vitality of augmented bone was observed in the PRF and in the control group. Consequently, the present study could not verify the potential beneficial effect of a PRF membrane on bone vitality of an autogenous bone graft used as a block.
Authors: João Manuel Mendez Caramês; Filipe Araújo Vieira; Gonçalo Bártolo Caramês; Ana Catarina Pinto; Helena Cristina Oliveira Francisco; Duarte Nuno da Silva Marques Journal: J Clin Med Date: 2022-02-08 Impact factor: 4.241