Resorption of retromolar bone grafts after alveolar ridge augmentation—volumetric changes after 12 months assessed by CBCT analysis

International Journal of Implant Dentistry

Jonathan Fleiner¹  Andres Stricker¹  Tabea Fluegge²  Frederik Maes³  Kirstin Vach⁴  Reinhilde Jacobs⁵ 

[1]Center of Implantology, Periodontology and 3D Head-and-Neck Imaging

[2]Department of Oral and Maxillofacial Surgery, Charité University of Medicine Berlin, Campus Benjamin Franklin

[3]ESAT/PSI & Medical Imaging Research Center, Faculty of Engineering Sciences, University of Leuven

[4]Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Center, University of Freiburg

[5]OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, University of Leuven

关键词: Ridge augmentation;    Bone remodeling;    Bone resorption;    Onlay graft;    CBCT;    Three-dimensional imaging;   

DOI  :  10.1186/s40729-020-00285-9

来源: DOAJ

【 摘 要 】

Abstract In this pilot study, a volumetric analysis of retromolar onlay bone grafts over a period of 12 months was conducted, using repeated CBCT imaging combined with automated image registration. Eleven patients being treated with 16 bone grafts taken from the retromolar area were examined by CBCT scanning prior to bone augmentation (T0), immediately after bone augmentation (T1) and after a healing time of 12 months after augmentation (T2). Graft volumes were measured at each time point after automated image registration of consecutive CBCT scans. The mean volume of the augmented site was 372.2 ± 179.4 mm3. Resorption relative to the original augmented volume was 43.7% ± 19.0% after 12 months. Three-dimensional graft resorption could be precisely depicted by the use of automated image registration for CBCT data over a period of 12 months and demonstrated extensive volumetric changes of bone grafts taken from the ascending ramus of the mandible. Graft resorption and continuous bony remodeling of the grafted site before and after implant insertion have to be carefully considered by the clinician.

【 授权许可】

Unknown